Speeding up Logos

Taht

Dave Hooton said:

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."

Very interesting and valuable... thanks for this!

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.

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.

Bradley Grainger (Faithlife) said:

(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?

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!

Bradley Grainger (Faithlife) said:

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]

Bradley Grainger (Faithlife) said:

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.