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-2424 Lustre <p>Improve memmory allocation in case of huge request queues.</p> <p>Limit number of request buffers in backlog, to avoid too expensive<br/> memory using with LNet routers.<br/> Allocate requests using cfs_mem_cache.<br/> Allow only 1 thread to allocate request buffers.</p> LU-2424

add memory limits for ptlrpc service

Improvement Minor Resolved Fixed Liang Zhen Andriy Skulysh patch Tue, 4 Dec 2012 08:08:47 +0000 Mon, 2 Dec 2013 13:46:10 +0000 Tue, 15 Oct 2013 19:41:08 +0000 Lustre 2.4.0 Lustre 2.5.0 0 9 <p>Xyratex-bug-id: MRP-689</p> <p>PATCH: <a href="http://review.whamcloud.com/#change,4740" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,4740</a></p> <p>Please check discussion on <a href="https://jira.whamcloud.com/browse/LU-2432" title="ptlrpc_alloc_rqbd spinning on vmap_area_lock on MDS" class="issue-link" data-issue-key="LU-2432"><del>LU-2432</del></a>, we probably should fix memory pressure by have bigger request buffer. </p> <p>patch is here: <a href="http://review.whamcloud.com/#change,4940" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,4940</a></p> <p>replaced previous patch with request allocation using kmem_cache only <a href="http://review.whamcloud.com/#/c/6874/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#/c/6874/</a> . </p> <p>Closing ticket as patches have landed to Master. Please let me know if more work is needed in this ticket and I will reopen.</p> <blockquote><p>replaced previous patch with request allocation using kmem_cache only <a href="http://review.whamcloud.com/#/c/6874/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#/c/6874/</a> .</p></blockquote> <p>The patch was back-ported to Lustre b2_4 branch: <a href="http://review.whamcloud.com/8445" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/8445</a></p> Related LU-2432 LU-1431 Development Rank 1|hzvd87: Rank (Obsolete) 5748