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-9716 Lustre <p>Under ior -z -t 4K testing, osc_extent_tree_dump0() consumes a lot of cpu time even though lnet.debug is set to 0:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> Function Hit Time Avg -------- --- ---- --- intel_idle 1644076 8717472093.00 us 1324531.36 us osc_extent_tree_dump0 786432 108012187.77 us 2164.31 us _raw_spin_lock 96688599 19305632.41 us 7.68 us cfs_hash_lookup 17322271 8030727.84 us 12.54 us cfs_hash_bd_lookup_intent 28342837 6303058.76 us 5.61 us cfs_hash_bd_from_key 40155989 5162903.57 us 3.64 us cfs_hash_del 9444486 5020069.68 us 7.31 us __schedule 3522583 4985703.95 us 52.08 us cfs_hash_multi_bd_lock 36211243 4896623.17 us 3.05 us cl_env_get 7869193 4469177.22 us 7.94 us cfs_hash_dual_bd_get 36211243 4419357.38 us 3.13 us __wake_up 9527651 4181541.86 us 13.29 us cfs_hash_find_or_add 9444481 3929948.37 us 4.51 us _raw_spin_unlock 96808225 3340468.42 us 1.08 us lu_context_key_get 95182604 3278555.77 us 0.74 us osc_extent_sanity_check0 10911904 3073224.76 us 5.72 us class_handle2object 7867641 2929678.43 us 10.08 us osc_extent_find 786432 2889266.79 us 47.64 us cl_env_put 9442060 2784024.38 us 3.33 us crc32_pclmul_le 786432 2532550.33 us 58.90 us ll_file_io_generic 1572863 2263669.56 us 16.85 us cfs_hash_bd_del_locked 9444488 2168097.28 us 2.55 us cfs_hash_bd_add_locked 9444494 2168096.22 us 2.50 us osc_extent_make_ready 756063 2165577.28 us 52.26 us cfs_hash_multi_bd_findadd_lock 9444481 2139335.37 us 2.51 us ptlrpcd_check 4249981 2132451.44 us 15.62 us </pre> </div></div> <p>A trivial optimization will be uploaded shorty.</p> LU-9716

osc_extent_tree_dump0() implementation is suboptimal

Improvement Minor Resolved Fixed WC Triage Andrew Perepechko patch Wed, 28 Jun 2017 09:23:10 +0000 Mon, 7 Aug 2017 19:05:32 +0000 Wed, 19 Jul 2017 04:00:01 +0000 Lustre 2.9.0 Lustre 2.10.1 Lustre 2.11.0 0 3 <p>Andrew Perepechko (andrew.perepechko@seagate.com) uploaded a new patch: <a href="https://review.whamcloud.com/27866" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/27866</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9716" title="osc_extent_tree_dump0() implementation is suboptimal" class="issue-link" data-issue-key="LU-9716"><del>LU-9716</del></a> osc: osc_extent_tree_dump0() implementation is suboptiomal<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: d978a6a60dbbaa866b65f9773dc8a866eb967317</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="https://review.whamcloud.com/27866/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/27866/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9716" title="osc_extent_tree_dump0() implementation is suboptimal" class="issue-link" data-issue-key="LU-9716"><del>LU-9716</del></a> osc: osc_extent_tree_dump0() implementation is suboptimal<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 97115ccd159e4503ca16cb7f68ee7479c780f1cf</p> <p>Landed for 2.11</p> <p>Minh Diep (minh.diep@intel.com) uploaded a new patch: <a href="https://review.whamcloud.com/28235" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/28235</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9716" title="osc_extent_tree_dump0() implementation is suboptimal" class="issue-link" data-issue-key="LU-9716"><del>LU-9716</del></a> osc: osc_extent_tree_dump0() implementation is suboptimal<br/> Project: fs/lustre-release<br/> Branch: b2_10<br/> Current Patch Set: 1<br/> Commit: 855372e1036156fe988750378ec020fae94baeb4</p> <p>John L. Hammond (john.hammond@intel.com) merged in patch <a href="https://review.whamcloud.com/28235/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/28235/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9716" title="osc_extent_tree_dump0() implementation is suboptimal" class="issue-link" data-issue-key="LU-9716"><del>LU-9716</del></a> osc: osc_extent_tree_dump0() implementation is suboptimal<br/> Project: fs/lustre-release<br/> Branch: b2_10<br/> Current Patch Set: <br/> Commit: fcaff5d7cc2cd4d6fecbf641b8a3ce4f09490e3d</p> Related Development Rank 1|hzzfsn: Rank (Obsolete) 9223372036854775807