LUS-10749-perf-results.tar.gz
LUS-10749-perf-traces.tar.gz
[LU-15547] Shared Directory File Creates regression seen in 2.15 when comparing to 2.12.66.1 Created: 10/Feb/22 Updated: 10/Feb/22 Resolved: 10/Feb/22 |
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| Status: | Closed |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Critical |
| Reporter: | Petros Koutoupis | Assignee: | WC Triage |
| Resolution: | Duplicate | Votes: | 0 |
| Labels: | None | ||
| Attachments: |
LUS-10749-perf-results.tar.gz
LUS-10749-perf-traces.tar.gz
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| Severity: | 3 |
| Rank (Obsolete): | 9223372036854775807 |
| Description |
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When testing mdtest 2.15 (2.14.57) and comparing to 2.12.6, I see a large 25% regression with Shared Directory File Creates. Perf traces (attached) show a lot of extra ldlm overhead. #!/bin/bash NODES=21 PPN=16 PROCS=$(( $NODES * $PPN )) MDT_COUNT=1 PAUSED=120 srun -N $NODES --ntasks-per-node $PPN ~bloewe/benchmarks/ior-3.3.0-CentOS-8.2/install/bin/mdtest -v -i 5 -p $PAUSED -C -E -T -r -n $(( $MDT_COUNT * 1048576 / $PROCS )) -d /mnt/kjlmo2/pkoutoupis/mdt0/test.`date +"%Y%m%d.%H%M%S"` 2>&1 |& tee f_mdt0_0k_ost_shared.out srun -N $NODES --ntasks-per-node $PPN ~bloewe/benchmarks/ior-3.3.0-CentOS-8.2/install/bin/mdtest -v -i 5 -p $PAUSED -C -w 32768 -E -e 32768 -T -r -n $(( $MDT_COUNT * 1048576 / $PROCS )) -d /mnt/kjlmo2/pkoutoupis/mdt0/test.`date +"%Y%m%d.%H%M%S"` 2>&1 |& tee f_mdt0_32k_ost_shared.out |
| Comments |
| Comment by Petros Koutoupis [ 10/Feb/22 ] |
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I cannot seem to close this ticket or change it. It is meant to be an LU. Can you please close and I will open up an LU? |
| Comment by Colin Faber [ 10/Feb/22 ] |
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Hi koutoupis,
Moved. |
| Comment by Petros Koutoupis [ 10/Feb/22 ] |
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Duplicate of https://jira.whamcloud.com/browse/LU-15546 |
