Search found 3055 matches

by Support
Mon Jul 19, 2021 2:26 am
Forum: Technical Support
Topic: Replacing the DDR4 sticks while PrimoCache is still active
Replies: 5
Views: 106

Re: Replacing the DDR4 sticks while PrimoCache is still active

KevinMcDonald wrote: Fri Jul 16, 2021 3:17 am Does it mean that some of the space of the DDR sticks still been held by L1 cache
when I reallocated them to other Mobo ?
No. RAM is not data-persistent after power off.
by Support
Mon Jul 12, 2021 4:40 am
Forum: Technical Support
Topic: L1 read data evicted upon L2 write
Replies: 1
Views: 65

Re: L1 read data evicted upon L2 write

RobF99 wrote: Fri Jul 09, 2021 8:22 pm I noticed that Read data that was in L1 would be evicted if that data was written to L2.
No. PrimoCache evicts L1 data based on L1 algorithm, not related to L2. Hot data will dislike to be evicted.
by Support
Mon Jul 12, 2021 4:27 am
Forum: Technical Support
Topic: Prefetching drive order
Replies: 2
Views: 73

Re: Prefetching drive order

PrimoCache keeps the order in which Windows recognizes volumes. Currently PrimoCache doesn't support to set prefetch order. We will consider this request or change it to parallel prefetching. Thanks.
by Support
Mon Jul 12, 2021 4:18 am
Forum: Submit Suggestions
Topic: [L2 Caching] Cache Priority and Modes
Replies: 1
Views: 105

Re: [L2 Caching] Cache Priority and Modes

You may make a hardware or software SSD raid as level-2 cache.
by Support
Mon Jul 12, 2021 4:15 am
Forum: Technical Support
Topic: Help explaining write cache
Replies: 4
Views: 124

Re: Help explaining write cache

Deferred write is disabled. The issue seems quite weird...Since Defer-Write is disabled, it is almost impossible to affect normal process. We hadn't seen such issues before. I'm sorry that currently we have no idea about this. But for L2 cache, it is not recommended to enable write cache if you are...
by Support
Mon Jul 12, 2021 3:05 am
Forum: Latest News
Topic: [2021-01-30] PrimoCache 4.1.0 released!
Replies: 30
Views: 5337

Re: [2021-01-30] PrimoCache 4.1.0 released!

For the L2 reset issue, you may check followings first.
viewtopic.php?p=15396#p15396
by Support
Tue Jul 06, 2021 3:47 am
Forum: Technical Support
Topic: L1 vs VMM, page file, metadata database
Replies: 2
Views: 79

Re: L1 vs VMM, page file, metadata database

OneRoot wrote: Mon Jul 05, 2021 8:42 am How is the LRU data maintained? Specifically, what mechanisms are in place to prevent a stream of LRU data being continuously updated, causing erase cycle wear and tear on the cache drive?
They are stored in additional memory allocated, as known as "overhead".
by Support
Mon Jul 05, 2021 2:01 am
Forum: Submit Suggestions
Topic: Caching Policy/algorithm suggestion:
Replies: 1
Views: 75

Re: Caching Policy/algorithm suggestion:

Thanks, we also have such ideas on improving cache performance.
by Support
Mon Jul 05, 2021 1:57 am
Forum: Technical Support
Topic: Ramdisk small block low speed.
Replies: 11
Views: 634

Re: Ramdisk small block low speed.

@SysVR, it takes some time to switch threads, so for 4KB access, sometimes it might not be good to use multiple threads for queues. For eg. switching threads might take 3us (just for demonstration purposes, data might not correct), while read/write a 4KB data only takes 2us. Using a single thread mi...