Search found 47 matches

by Logic
Mon Mar 07, 2022 5:21 pm
Forum: Technical Support
Topic: Enlightening findings on file compression and PrimoCache
Replies: 12
Views: 9612

Re: Enlightening findings on file compression and PrimoCache

Elrichal wrote: Sat Jan 15, 2022 3:55 pm Thank you both Rob and Support for your studies and results, they are very interesting and informative reads.
Support DID NOT post the linked initial post on Win 10 Compact/OS and PrimoCache, I did..! :)
by Logic
Mon Mar 07, 2022 5:14 pm
Forum: Technical Support
Topic: Enlightening findings on file compression and PrimoCache
Replies: 12
Views: 9612

Re: Enlightening findings on file compression and PrimoCache

HDD was 4K, Primocache was 32K. As far as I understand the block size in PrimoCache doesn't affect performance at all. Instead it determines the amount of data surrounding the cached block that is cached. I confirmed this by lining up the files from the folder on the drive consecutively and when I ...
by Logic
Tue Jan 18, 2022 2:25 pm
Forum: Technical Support
Topic: Enlightening findings on file compression and PrimoCache
Replies: 12
Views: 9612

Re: Enlightening findings on file compression and PrimoCache

Thx for the tests RobF99. As: Xpress4K compresses data in 4KB chunks. Xpress8K compresses data in 8KB chunks. Xpress16K compresses data in 16KB chunk https://docs.microsoft.com/en-us/windows/win32/api/wofapi/ns-wofapi-wof_file_compression_info_v1 Some questions: Did you use the std 4K cluster size o...
by Logic
Tue Jan 18, 2022 11:21 am
Forum: Submit Suggestions
Topic: Win 10 Compact feature: Better Compatible? compression!
Replies: 18
Views: 12563

Re: Win 10 Compact feature: Better Compatible? compression!

Confirmed: Xpress4K compresses data in 4KB chunks . Xpress8K compresses data in 8KB chunks . Xpress16K compresses data in 16KB chunks . LZX compresses data in 32KB chunk s. https://docs.microsoft.com/en-us/windows/win32/api/wofapi/ns-wofapi-wof_file_compression_info_v1 This means that matching the ...
by Logic
Mon Jan 17, 2022 1:26 pm
Forum: Submit Suggestions
Topic: Win 10 Compact feature: Better Compatible? compression!
Replies: 18
Views: 12563

Re: Win 10 Compact feature: Better Compatible? compression!

RobF99 has tested Windows 10 Compact (Xpress4K to 16K) here: https://forum.romexsoftware.com/en-us/viewtopic.php?t=5410 Besides more than halving the space used on his HDD and doubling the amount of data that fits in his L1 and L2 caches; He shaved 2.2 seconds of load times (averaged) and halved the...
by Logic
Sun Sep 26, 2021 11:47 pm
Forum: Submit Suggestions
Topic: Win 10 Compact feature: Better Compatible? compression!
Replies: 18
Views: 12563

Re: Win 10 Compact feature: Better Compatible? compression!

From my understanding PrimoCache works at the block level then it would use the XPRESS8K versions for example. The performance improvement will really depend on the hardware used. In some cases similar to Windows memory compression, it might be handy instead of writing it to the next tier storage. ...
by Logic
Sat Sep 18, 2021 11:42 pm
Forum: Submit Suggestions
Topic: Win 10 Compact feature: Better Compatible? compression!
Replies: 18
Views: 12563

Re: Win 10 Compact feature: Better Compatible? compression!

I mean if Windows or other applications enable compressions on target drives, PrimoCache L1/L2 also stores compressed data, not uncompressed data. The feature to able to compress data is on our todo list but at a low priority, because to support this feature we have to redesign the base programming...
by Logic
Fri Sep 17, 2021 12:24 pm
Forum: Submit Suggestions
Topic: Win 10 Compact feature: Better Compatible? compression!
Replies: 18
Views: 12563

Re: Win 10 Compact feature: Better Compatible? compression!

From my understanding PrimoCache works at the block level then it would use the XPRESS8K versions for example. The performance improvement will really depend on the hardware used. In some cases similar to Windows memory compression, it might be handy instead of writing it to the next tier storage. ...
by Logic
Wed Sep 15, 2021 10:04 am
Forum: Technical Support
Topic: Windows 11 and Direct Storage
Replies: 5
Views: 7331

Re: Windows 11 and Direct Storage

Support wrote: Mon Jun 28, 2021 7:19 am I don't think so.
I'd work on that if I were Primocache.
Direct storage is on of the most anticipated features of Win 11 and you will NOT be selling Primo to any gamers if Direct Storage and similar from Nvidia and AMD are not supported!
by Logic
Mon Aug 09, 2021 11:47 pm
Forum: Submit Suggestions
Topic: Caching Policy/algorithm suggestion:
Replies: 4
Views: 1602

Re: Caching Policy/algorithm suggestion:

It's an interesting link and highlights an issue with how large files can have a disproportionate effect on caching. The problem for PrimoCache at the moment is that it runs at block-level, so isn't aware of what file each block belongs to (Windows' own file cache on the other hand, does run at fil...