Speeding up Logos
I am enjoying using Logos 8. I think it is a little faster than Logos 7 was. When I select a guide or tool from the top menu, they do take ages to get to the first thing I look for, but after that the program seems to work more quickly on further things I select.
How can i best speed things up? How much is the sluggishness due to Logos itself? How much is due to my slow internet speed, and how much due to my five year old Windows 8 ASUS i7 2.4gHz computer [with 8 gigs memory and 1.5 terabytes hard disk drive?]
Will it be faster when our internet speed is upgraded [supposedly it may double in speed from about 10 thousand whatsanames to about 25 thousand whatsanames in a year or so]
Thanks for your help.
This is a great forum. I appreciate your fast answers, my friends!
Comments
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SSD
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The age of the computer definitely is part. I feel your pain. I do have a SSD + 8 gig memory, and mine computer is even older. There are 2 things to try, that did help me. The first is the compiler. In the command/go box/bar, type:
set use ngen to yes
The next time you run Logos (and every update after), Logos will optimize itself for your computer. When I did this with 7, I could tell a difference. As it's now my default setting, it just does it, so I have nothing to compae.
As you upgraded, run the rebuild index in the command box. Logos 8 uses a multiple-file index, which does operate faster, but 7 and prior use the huge index.
Those two things will help some. We're just behind on computers
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The issue with speed is likely due to the age of your computer. If you read the forums here, people will say that the single greatest thing you can do to increase the speed of Logos is install an SSD, if your computer supports it. (You don't say whether your computer is a desktop or laptop. Most desktop computers will accommodate an SSD but many laptops these days are not upgradable and won't accommodate one.)
When you are thinking about upgrades to an existing computer you have to weigh the cost of the upgrade against the age of the system. Sometimes it pays to purchase a more modern system. We can help you identify the specifications for a new system if that's what you decide to do.
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SSD < NVMe M.2
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David, my experience with Logos 7 and 8 is that the HDD is the single most important influence on response time. A year ago I updated a desktop machine and obtained fantastic results. In that case, motherboard and memory were upgraded, in addition to the installation of an SSD. Two weeks ago I upgraded my laptop's drive from a 1TB HDD to a 1TB SSD. Logos 8 opens in 17 seconds instead of 50. In the passage guide when I type a reference and hit enter, there is an immediate response; formerly it took over a minute for any response at all . It still takes 20-30 seconds to finish searching my library to complete the passage guide, but this is much better than a month ago. In summary, my two experiences show that an upgrade to an SSD yields immediate and obvious benefits.
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I have an even slower system with an i3-4170 running Logos 7. After reading the rave reviews of SSDs, I installed an HP EX920 M.2 PCIe 3.1x4 NVME drive. Since the computer was older, I had to buy an adapter board in order to connect it to the PCIe slot. I was not able to boot from the SSD, but was able to install Logos onto it. The results were phenomenal with amazingly fast response to searches. This was definitely one of the best upgrades I have made.
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Thanks for answers on this question, folk. How much space does Logos take up? Someone explained to me how to find out how much space is taken up on my computer! but Ive forgotten and cant find that post now.
Is 256 SSD enough, with say a 1Tb hard drive, or would I need more in the SSD?
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David McKay said:
Someone explained to me how to find out how much space is taken up on my computer!
- Right-click on the Logos icon
- Right-click "Logos Bible Software"
- Click Properties
- Click "Open File Location" from the Shortcut tab
- Select everything in that folder
- Right-click and click Properties
- Number of files and size is reported in the General tab
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I bought a new Dell computer today. It is an i7 16 RAM 256 SSD and 1Tb standard HD. My current computer was over 5 years old.
I'm installing Logos 8 now. Despite the computer currently downloading gigabytes of stuff, and our internet connection not being anything flash, when I open the passage guide or other guides, they come up instantly. It is working many, many times faster than before, even while downloading stuff. Wow!
Thanks again for the advice.
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David McKay said:
It is working many, many times faster than before, even while downloading stuff. Wow!
Enjoy[:)]
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I bought a new laptop, hoping to make things work faster. Mine was 5 years old. I was told a flash drive would speed things up. This one has 256 gigs SSD, and a 1 terabyte conventional hard disk, 16 megs of RAM and a 4 GIG graphics card, but I don't know if that's relevant.Logos Bible Software on old computer: 57 secs to load.New computer: 15 seconds.Load Theology guide, select "trinity," then "trinity in the Old Testament." Old computer: 1 minute 30. Takes a long time before anything happens, after you type "theology."New computer: almost instant. About 5 secs0
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I have a very similar laptop to the one you describe here in addition to my desktop so -I was curious regarding what the difference between your old computer and the one you describe in your latest post. A fairly simple calculation based on booting up Logos each day and leaving it on for the enitre day would result in 4¼ hours additional time for the entire year. For an entire year this doesn't seem to be objectively too much. I realize that when we're sitting there waiting for the computer to execute it seems interminable, but it really doesn't seem to be much. I think I'll wait for something more compelling before I upgrade my computer. I think we're getting too impatient.
george
gfsomselיְמֵי־שְׁנוֹתֵינוּ בָהֶם שִׁבְעִים שָׁנָה וְאִם בִּגְבוּרֹת שְׁמוֹנִים שָׁנָה וְרָהְבָּם עָמָל וָאָוֶן
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George Somsel said:
I have a very similar laptop to the one you describe here in addition to my desktop so -I was curious regarding what the difference between your old computer and the one you describe in your latest post. A fairly simple calculation based on booting up Logos each day and leaving it on for the enitre day would result in 4¼ hours additional time for the entire year. For an entire year this doesn't seem to be objectively too much. I realize that when we're sitting there waiting for the computer to execute it seems interminable, but it really doesn't seem to be much. I think I'll wait for something more compelling before I upgrade my computer. I think we're getting too impatient.
The benefit of an SSD isn't just the loading time, it also affects the overall snappiness of your computer for all programs. Considering how inexpensive SSD's are these days, I'd say the benefits are definitely worth it if your computer's hard drive can be upgraded.
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Everything is faster with my new laptop. Waiting less time for the program to start is a bonus, but I especially appreciate the searches taking about five seconds, instead of over a minute and a half.
However, my new laptop has an unwelcome feature: I get a “blue screen of death” every day or so, and haven’t been able to solve this yet.
Nice to hear from you George
David McKay
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David McKay said:
Everything is faster with my new laptop. Waiting less time for the program to start is a bonus, but I especially appreciate the searches taking about five seconds, instead of over a minute and a half.
However, my new laptop has an unwelcome feature: I get a “blue screen of death” every day or so, and haven’t been able to solve this yet.
Nice to hear from you George
David McKay
That's not normal for a brand new computer. You should have that looked at. You can try "refreshing" your install of WIndows 10 which requires reinstalling every thing. Or you can exchange it for a new machine. Blue screens should be rare not everyday occurrences.
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Michael said:
That's not normal for a brand new computer. You should have that looked at. You can try "refreshing" your install of WIndows 10 which requires reinstalling every thing. Or you can exchange it for a new machine. Blue screens should be rare not everyday occurrences.
I agree with this. Blue screening is quite rare nowadays and shouldn't happen with a new computer. I would get in touch with dells customer services. I think the market for computers is packed at the moment so customer services seem to be more responsive than they used to be :-)
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Just thinking about speed. I'm not sure if you open every single area of a guide when you use them but if you do you can speed things up a lot by closing all the sections down (right click on diddy arrow and then "close all" or something like that. you can then open up the sections that you need (and then close them again after) and everything seems to run a great deal faster
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Ian Kirk said:
set use ngen to yes
Wow... this really gave Logos a boost -- thanks for this great tip!
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Earl Tipton said:
... my experience with Logos 7 and 8 is that the HDD is the single most important influence on response time...
I used to run Logos with 20-30 resources open with no problem at all (probably before Logos 7)... now, even having 12 resources open is almost unbearable.
My computer is quite fast with anything else I do... I'm running:
- Intel Core i5 (6th Gen) 6200U / 2.3 GHz Max Turbo Speed 2.8 GHz 64-bit Hyper-Threading
- 8 GB DDR4 SDRAM 2133 MHz
- 3D 4K GRAPHICS CARD
- 7200RPM SATA 1TBAfter evaluating and clocking... I have to agree with you Earl, HDD is the single most important aspect. Normally Logos is taking up only 450MB to 750MB of RAM... but there is a massive spike in HDD Read Access when clicking resource tabs. I have plenty of RAM to spare, but it seems that Logos isn't loading everything into RAM when loading a workspace, and even then -- once a resource is accessed and loaded from HDD to RAM, it seems to be dropped back to HDD when not accessed for a little while.
I'm trying to decide between the following 4 options:
1) Increase my RAM
2) Use sideloaded prefetch with the fastest SD 32GB card I can find
3) Use sideloaded SD and move all Logos' resources from HDD to SD
4) Get a SSD to replace my HDDI believe that each option is better (1 being the worst, 4 being the best) -- BUT, I really don't want to change out my HDD unless I absolutely must. So I'm leaning toward option 3.
I'm really hoping that I might be able to get some wise feedback here on the forum. I'm determined to increase Logos' speed. I've been using it since mid 90's -- and it's gotten slower over the years (the Logos improvements and features have grown faster than the technology). Now it's just become somewhat miserable to run. I hear many folks saying that their Logos is running faster than ever with the newer releases... so it makes me think I have some sort of strange bottle neck in my current install.
I have an awful lot of resources -- but that shouldn't slow down Logos if I'm not opening them?
Thanks so much ahead of time for any wisdom!
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Scott David said:
I'm trying to decide between the following 4 options:
1) Increase my RAM
2) Use sideloaded prefetch with the fastest SD 32GB card I can find
3) Use sideloaded SD and move all Logos' resources from HDD to SD
4) Get a SSD to replace my HDD1 wont make little if any difference, 8GB is sufficient for Windows + Office + Browser + Logos running at the same time.
2 and 3 will very likely be slower, but ymmv, depends on sd card controller and your usage. You could try this with a small capacity card for limited resources.
4 will bring good performance gains.
You could remove then caddy your current HDD and use it via usb, or if your laptop has a cdrom, you can get a caddy to put the SSD in there that slot instead of the cdrom.
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Hello,
I took the plunge this year and installed a Western Digital WD Blue SSD 500GB.
When I start my computer up first thing, it takes about a minute and a half to come up. But, if I close
Logos and restart, it loads in about 15 seconds.
To do the searches as Dave mentioned earlier, about 5 seconds to bring up Trinity in the Old
Testament.
I'm very happy with the results.
Windows 10 Desktop HP Pavilion 570 AMD A12-9800 8GB memory.
Lane
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Scott David said:
I'm trying to decide between the following 4 options:
1) Increase my RAM
2) Use sideloaded prefetch with the fastest SD 32GB card I can find
3) Use sideloaded SD and move all Logos' resources from HDD to SD
4) Get a SSD to replace my HDDI believe that each option is better (1 being the worst, 4 being the best) -- BUT, I really don't want to change out my HDD unless I absolutely must. So I'm leaning toward option 3.
Do not consider options 2 and 3 as they will not benefit performance. Load speed (in Windows) is improved by the command Set Use Ngen to Yes (which requires a restart, and is then permanently enabled). SD cards are not recommended/supported by Faithlife, and could be slower than your 7200 RPM HDD.
Option 4 is the best by far (and I use one with 8 GB DDR4 memory).
Dave
===Windows 11 & Android 13
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Scott David said:
1) Increase my RAM
2) Use sideloaded prefetch with the fastest SD 32GB card I can find
3) Use sideloaded SD and move all Logos' resources from HDD to SD
4) Get a SSD to replace my HDD(4) is the best option for improving Logos' overall performance.
We don't support (and strongly recommend against) options (2) and (3); our experience shows that users report a much higher rate of crashes and instability when running Logos from a SD card.
(1) would help improve indexing and searching speeds once you've upgraded from a HDD to SSD.
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Kevin said:
2 and 3 will very likely be slower, but ymmv, depends on sd card controller and your usage. You could try this with a small capacity card for limited resources.
Thanks so much Kevin. I have USB 3.0 (wish I had 3.1) -- and was thinking of the newer SSD ThumbDrives... unfortunately, they're all 3.1 so it's uncertain what the actual Access Time and Read Rate will really be on my computer... but on the 3.1 machines, they're seeing over 4MBps read times consistently. Really tough to know what I'll get though... I'm sure it'll be faster than my 7200rpm SATA (80-160MBps)... but may not be noticeably different. Any thoughts on this theory (plugging a SSD into usb 3.0 and going with option 3) ??
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Lane McKay said:
I took the plunge this year and installed a Western Digital WD Blue SSD 500GB... Windows 10 Desktop HP Pavilion 570 AMD A12-9800 8GB memory.
[:(] Uggghhh.... Thanks so much Lane... this is my fear... I'm going to be cloning my entire drive and going to SSD. [:O]
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Hey Dave. Thanks for your input! I was going to use Symbolic Linking (redirect the entire Logos Roaming Direcotry)... you think that might slow the processes down?Dave Hooton said:Do not consider options 2 and 3 as they will not benefit performance. Load speed (in Windows) is improved by the command Set Use Ngen to Yes (which requires a restart, and is then permanently enabled). SD cards are not recommended/supported by Faithlife, and could be slower than your 7200 RPM HDD. Option 4 is the best by far (and I use one with 8 GB DDR4 memory).
I did the Use Ngen... it did help -- maybe about a 25% increase. Perhaps it's telling Logos to commit more resources to RAM instead of Hot Swapping with the HDD?? Will enabling this option perhaps make Logos faster over time (will it observe and learn)... or is it pretty much one and done?
I should have been a little clearer in my original post... I'd never use a standard SD or Thumbdrive for something that has regular Read/Write... I would do SSD (most likely a Solid State Thumbdrive).
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(4) is the best option for improving Logos' overall performance.
We don't support (and strongly recommend against) options (2) and (3); our experience shows that users report a much higher rate of crashes and instability when running Logos from a SD card.
(1) would help improve indexing and searching speeds once you've upgraded from a HDD to SSD.
Thanks so much Bradley... I misspoke about the SD; I would use it for prefetch... but not for storage of heavy read / write... for option 3), I was thinking of a Solid State Thumbdrive. Does this affect your opinion at all?
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Scott David said:
for option 3), I was thinking of a Solid State Thumbdrive. Does this affect your opinion at all?
We don't support any external drives as storage locations for Logos files: https://support.logos.com/hc/en-us/articles/360007506971-Logos-Minimum-System-Requirements
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Scott David said:
I did the Use Ngen... it did help -- maybe about a 25% increase. Perhaps it's telling Logos to commit more resources to RAM instead of Hot Swapping with the HDD?? Will enabling this option perhaps make Logos faster over time (will it observe and learn)... or is it pretty much one and done?
From MS "The Native Image Generator (Ngen.exe) is a tool that improves the performance of managed applications. Ngen.exe creates native images, which are files containing compiled processor-specific machine code, and installs them into the native image cache on the local computer. The runtime can use native images from the cache instead of using the just-in-time (JIT) compiler to compile the original assembly."
Dave
===Windows 11 & Android 13
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Scott David said:
I find it strange only two have mentioned this and not a comeback on it. My question is, what does this setting do and if it actually speeds things up, why?
MSI Pulse GL76-12UGK Intel Core i7-12700H, RTX3070, 16GB RAM, 1TB SSD, Windows 11 Home
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There is a discussion of this at https://community.logos.com/forums/t/147283.aspx?PageIndex=1 (this was before the command box command was introduced)
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Thanks Graham. I totally missed that thread & obviously there's a lot of reading. Just a quick question: Do I understand correctly that the line "set use ngen to yes" has to be inserted each time there is an update to Logos or has that changed since back then?
MSI Pulse GL76-12UGK Intel Core i7-12700H, RTX3070, 16GB RAM, 1TB SSD, Windows 11 Home
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Bootjack said:
Thanks Graham. I totally missed that thread & obviously there's a lot of reading. Just a quick question: Do I understand correctly that the line "set use ngen to yes" has to be inserted each time there is an update to Logos or has that changed since back then?
No - you don’t need to enter the command after each update. But you will be prompted if you still want it to be applied.
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Good! Thank you Graham!
MSI Pulse GL76-12UGK Intel Core i7-12700H, RTX3070, 16GB RAM, 1TB SSD, Windows 11 Home
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Taht
Dave Hooton said:From MS "The Native Image Generator (Ngen.exe) is a tool that improves the performance of managed applications. Ngen.exe creates native images, which are files containing compiled processor-specific machine code, and installs them into the native image cache on the local computer. The runtime can use native images from the cache instead of using the just-in-time (JIT) compiler to compile the original assembly."
Very interesting and valuable... thanks for this!
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Well I've got some final news to report; thank you to everyone who contributed. I've got some pretty surprising results to share...
A) This gave me a noticeable increase in speed: I took Dave's advice above and did the following command: Set Use Ngen to Yes
I discovered that my Webster Merriam Dictionary, when left as an open resource, slowed things down noticeably. Closing that helped.C) This is the shocker -- ReadyBoost gave me a massive increase in speed with Logos... [The following comments are useless for those who have SSD Solid State Drives - but for the rest of us...]
Yes, believe it or not -- I decided to give option 2 a shot (use sideloaded ReadyBoost prefetch with fast 32GB flash memory). And the difference is INCREDIBLE. I'm shocked. A few things about doing this:
1) READY BOOST IS PERFECT FOR LOGOS - I read a bunch of techy 'white papers' -- and all of them said the same thing: ReadyBoost works best when you are dealing with large programs that utilize large files (like Adobe PhotoShop). Obviously, Logos fits right into this category. So I decided to give ReadyBoost a try.
2) THUMBDRIVE MUST MATCH YOUR RAM - The needed USB Flash memory for ReadyBoost depends upon your PC's RAM size -- to ascertain the best drive for your RAM, do a google search. I have 8GB of RAM, that equated to a 32GB card (according to the pros). This was proved true, as I enabled ReadyBoost, Windows recommended reserving 30488MB for ReadyBoost; my 32GB card had 30583MB available -- so it's an almost perfect match.
3) DEDICATE THE ENTIRE FLASH DRIVE - Since I got the exact right Flash for my RAM size, I could dedicate the entire USB Thumbdrive to ReadyBoost ("Dedicate this Device to ReadyBoost") instead of "Use this Device: Space to Reserve..."
4) FORMAT THE THUMBDRIVE BEFORE ENABLING READYBOOST - When you format Flash Memory you can choose i) FAT32 [worst choice in every way - especially considering ReadyBoost will be maxed at 4GB] ii)NTFS iii)exFAT. DEFINITELY choose exFAT - it is designed to handle large chunks and is specifically designed for Flash Memory. The tech articles I read said to choose "DEFAULT" for the Allocation Unit Size; that's what I did.
I picked up a 32GB 200MBps Thumbdrive on Amazon for $9 -- it only sticks out of my notebook about .25 inches. And now my Logos is faster than it's ever been.
Thanks, and blessings.
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Hi everybody
Just in case you didn't see this
I have noticed on my system how the speed is dramatically increased on searching
one of the things I have done in the past is not let my Windows operating system indexing any of my drives
I do not search a lot on my hard drives as I have my filesystem organised
maybe something you could try to see if it one helps increase indexing speed for logos
if your system is indexing and also you have logos indexing then your system is going to be very slow
so I have my windows operating system not indexing
Does indexing slow down computer? But slower PCs that use indexing can see a performance hit, and you can give them a speed boost by turning off indexing. Even if you have an SSD disk, turning off indexing can improve your speed, because the constant writing to disk that indexing does can eventually slow down SSDs.
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Ok Scott, thanks for that. But does not the "set use ngen to yes" do the same trick for Logos?
MSI Pulse GL76-12UGK Intel Core i7-12700H, RTX3070, 16GB RAM, 1TB SSD, Windows 11 Home
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Scott David said:
Well I've got some final news to report; thank you to everyone who contributed. I've got some pretty surprising results to share...
A) This gave me a noticeable increase in speed: I took Dave's advice above and did the following command: Set Use Ngen to Yes
I discovered that my Webster Merriam Dictionary, when left as an open resource, slowed things down noticeably. Closing that helped.C) This is the shocker -- ReadyBoost gave me a massive increase in speed with Logos... [The following comments are useless for those who have SSD Solid State Drives - but for the rest of us...]
Yes, believe it or not -- I decided to give option 2 a shot (use sideloaded ReadyBoost prefetch with fast 32GB flash memory). And the difference is INCREDIBLE. I'm shocked. A few things about doing this:
1) READY BOOST IS PERFECT FOR LOGOS - I read a bunch of techy 'white papers' -- and all of them said the same thing: ReadyBoost works best when you are dealing with large programs that utilize large files (like Adobe PhotoShop). Obviously, Logos fits right into this category. So I decided to give ReadyBoost a try.
2) THUMBDRIVE MUST MATCH YOUR RAM - The needed USB Flash memory for ReadyBoost depends upon your PC's RAM size -- to ascertain the best drive for your RAM, do a google search. I have 8GB of RAM, that equated to a 32GB card (according to the pros). This was proved true, as I enabled ReadyBoost, Windows recommended reserving 30488MB for ReadyBoost; my 32GB card had 30583MB available -- so it's an almost perfect match.
3) DEDICATE THE ENTIRE FLASH DRIVE - Since I got the exact right Flash for my RAM size, I could dedicate the entire USB Thumbdrive to ReadyBoost ("Dedicate this Device to ReadyBoost") instead of "Use this Device: Space to Reserve..."
4) FORMAT THE THUMBDRIVE BEFORE ENABLING READYBOOST - When you format Flash Memory you can choose i) FAT32 [worst choice in every way - especially considering ReadyBoost will be maxed at 4GB] ii)NTFS iii)exFAT. DEFINITELY choose exFAT - it is designed to handle large chunks and is specifically designed for Flash Memory. The tech articles I read said to choose "DEFAULT" for the Allocation Unit Size; that's what I did.
I picked up a 32GB 200MBps Thumbdrive on Amazon for $9 -- it only sticks out of my notebook about .25 inches. And now my Logos is faster than it's ever been.
Thanks, and blessings.
Scott David this is really good news! Really glad you tried it
No doubt will help others who are using a HDD.Bookmarked for reference.
(1) would help improve indexing and searching speeds once you've upgraded from a HDD to SSD.
Bradley if you are still monitoring, I am interested in your suggestion about RAM. Try as I like, I cannot get Logos to use more than at most 2GB of RAM even with a full text everthing search (4000 ish resources + 2000 not downloaded). I have 10 ish active panes, plus 20 not on display but in tabs, mostly all linked.
This is on Windows. I am at 50% utilisation of RAM. Am I missing out on some memory caching or something? Maybe Windows bug/missing feature?
How much RAM is everyone else using on their systems for Logos?
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Michael Parry-Thomas said:
I have noticed on my system how the speed is dramatically increased on searching... one of the things I have done in the past is not let my Windows operating system indexing any of my drives
LOL Michael; INDEXING is the Devil [6][8-|]
Indexing not only massively slows down the PC, but radically pushes components to their limits (wearing down peripherals much quicker). And when a large file with lots of text or a large quantity of files gets Moved / Copied / Added on your PC, Windows Indexing goes crazy.
I always disable all indexing and just do all my searches right within Windows File Explorer (as opposed to [WIN]+[ S ] or [CTRL]+[ESC] or [WIN]) -- the increased wait time on searches from within Explorer is totally negligible. I do any searches right from the directory I want to search in. Here are some notes on how to disable different types of indexing. If you do the first one, you shouldn't need to do any others.
Disable Indexing
- Disable All Indexing: [WIN]+[R] > services.msc (or: [WIN]+[ S ] > Services) > Indexing Services (or sometimes called Windows Search) > Double Click > STOP > Disable Startup
- Disable Whole Drive (e.g. your C:\ Drive): Windows File Explorer > Rt-Click C (or whatever drive) > General Tab > Uncheck “Allow Files on this Drive to Have Files Indexed…”
- Disable Selective Indexing Components: [WIN]+[ S ] > Indexing Options
- Disable Outlook Indexing: [WIN]+[ S ] > Indexing Options > Advanced > File Types > scroll to "msg"
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Bootjack said:
Ok Scott, thanks for that. But does not the "set use ngen to yes" do the same trick for Logos?
Hi Bootjack!
Are you asking me if NGEN is the same as ReadyBoost? If so, NO.
Are you asking me if NGEN works for Logos as well as Windows? If so, YES.
Blessings!
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Good enough Scott! Thank you for the clarification.
MSI Pulse GL76-12UGK Intel Core i7-12700H, RTX3070, 16GB RAM, 1TB SSD, Windows 11 Home
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Kevin said:
Bradley if you are still monitoring, I am interested in your suggestion about RAM. Try as I like, I cannot get Logos to use more than at most 2GB of RAM even with a full text everthing search (4000 ish resources + 2000 not downloaded). I have 10 ish active panes, plus 20 not on display but in tabs, mostly all linked.
This is on Windows. I am at 50% utilisation of RAM. Am I missing out on some memory caching or something? Maybe Windows bug/missing feature?
Logos will use a technology called "memory-mapped file I/O" on Windows to read/write the index files (and resources). This doesn't show up in the "Memory" column in Task Manager but can be seen with tools such as VMMap.
Some of these performance optimisations are disabled unless your system has at least 12GB of RAM (as they can potentially interfere with other programs), so you won't necessarily be able to extrapolate from the behaviour on an 8GB system to see what would happen with 16GB.
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Additionally, if programs aren't actively using that RAM, Windows will automatically use it to cache frequently-accessed files. You can see this on the Memory tab of Task Manager (when More details is expanded). There should be little "Free" memory with most of your unused memory marked as "Standby": this is cached files and other data.
The more RAM you have installed on your system, the more files and data Windows can cache (to speed up all your programs).
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Logos will use a technology called "memory-mapped file I/O" on Windows to read/write the index files (and resources). This doesn't show up in the "Memory" column in Task Manager but can be seen with tools such as VMMap.
Some of these performance optimisations are disabled unless your system has at least 12GB of RAM (as they can potentially interfere with other programs), so you won't necessarily be able to extrapolate from the behaviour on an 8GB system to see what would happen with 16GB.
Bradley that is really useful info thank you! It will be well considered for upgrade options [Y]
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Kevin said:
Bradley if you are still monitoring, I am interested in your suggestion about RAM. Try as I like, I cannot get Logos to use more than at most 2GB of RAM...
Wow, how did you get Logos to use that much RAM? I'm lucky if I can get it up to 750MB... and I've got 8GB -- but for me, Logos just doesn't want to put everything and hold everything in RAM. This would probably be a dramatic performance increase if I could 'force' logos to get everything into RAM.
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Logos will use a technology called "memory-mapped file I/O" on Windows to read/write the index files (and resources)... these performance optimisations are disabled unless your system has at least 12GB of RAM...
Ahhh... well that answers my previous post! So upgrading the RAM to >= 12GB should have a very significant impact on Logos; correct? If I upgrade my RAM, do I need to execute any special configurations to get Logos to use more RAM, or will it happen automatically? Now I'm really going back to the idea of upgrading my RAM as well. Thanks Bradley -- this is super valuable information -- for many of us I'm sure.
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Bradley, once this thread has plateaued, it may be nice to take all the best practices that are applicable for most folks' contexts -- and try to consolidate everything into one 'master' post. So for example, it may look something like this:
HDD: If you have a HDD, then...
SSD: If you have SSD, then...
RAM: If you have <= 12GB RAM, then...
RAM: If you have >= 12GB RAM, then...Sort of a simple roadmap that helps folks know what their best chances would be to speed things up; know whether to ugrade RAM, try Ready Boost, try NGEN, etc.
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Scott David said:
So upgrading the RAM to >= 12GB should have a very significant impact on Logos; correct?
It's hard to quantify the impact it will have. It should definitely speed up index merging. However, that should only be happening when resource updates are delivered (every two weeks) or new books are purchased (up to you). So you may not notice a large impact day-to-day.
It should help with general operations on your computer (for Logos and other programs) as files can automatically be cached in memory by Windows, reducing disk I/O. It's harder to say how much of an impact this will have for your typical use of your computer.
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