https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-11178 Lustre in some cases (SSD?) it makes sense to bypass pagecache to save on related overhead. 1GB/sec IO with 4K pages imply 256K pages/sec to allocate/insert into the cache which can be quite consuming in terms of CPU cycles and locking (especially for shared files). <br/> LU-11178

ldiskfs osd to use preallocated buffers instead of pagecache when needed

Improvement Minor Closed Fixed Alex Zhuravlev Alex Zhuravlev Wed, 25 Jul 2018 13:07:16 +0000 Thu, 16 Apr 2020 08:10:21 +0000 Thu, 16 Apr 2020 08:10:21 +0000 0 2 <p>Is this dup of <a href="https://jira.whamcloud.com/browse/LU-11347" title="Do not use pagecache for SSD I/O when read/write cache are disabled" class="issue-link" data-issue-key="LU-11347"><del>LU-11347</del></a>?</p> <p>fixed with <a href="https://jira.whamcloud.com/browse/LU-11347" title="Do not use pagecache for SSD I/O when read/write cache are disabled" class="issue-link" data-issue-key="LU-11347"><del>LU-11347</del></a></p> Development Rank 1|hzzztj: Rank (Obsolete) 9223372036854775807