Bug 1659327
| Summary: | 43% regression in small-file sequential read performance | ||
|---|---|---|---|
| Product: | [Community] GlusterFS | Reporter: | Raghavendra G <rgowdapp> |
| Component: | open-behind | Assignee: | Raghavendra G <rgowdapp> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | mainline | CC: | bugs, ksandha, mpillai, sheggodu, smali |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | glusterfs-6.0 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-03-25 16:32:41 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Raghavendra G
2018-12-14 05:42:32 UTC
REVIEW: https://review.gluster.org/21857 (performance/ob: make open-behind as a child of quick-read) posted (#1) for review on master by Raghavendra G Following are the runs from small-file workload
no-fixes-default-config | fixes-ob-without-anon-fd-child-of-qr | fixes-ob-with-anon-fd-child-of-qr
| |
append sum=7076.66 count=5 avg=1415.33 |append sum=7135.91 count=5 avg=1427.18 |append sum=7052.17 count=5 avg=1410.43
chmod sum=9146.32 count=5 avg=1829.26 |chmod sum=9207.25 count=5 avg=1841.45 |chmod sum=9245.51 count=5 avg=1849.10
create sum=13032.1 count=5 avg=2606.42 |create sum=12853.2 count=5 avg=2570.64 |create sum=13307.8 count=5 avg=2661.56
delete-renamed sum=8483.5 count=5 avg=1696.70 |delete-renamed sum=8676.86 count=5 avg=1735.37 |delete-renamed sum=8634.49 count=5 avg=1726.89
ls-l sum=40362.8 count=5 avg=8072.56 |ls-l sum=38522 count=5 avg=7704.40 |ls-l sum=40140.9 count=5 avg=8028.18
mkdir sum=3419.6 count=5 avg=683.92 |mkdir sum=3639.08 count=5 avg=727.81 |mkdir sum=3708.42 count=5 avg=741.68
read sum=16703.9 count=5 avg=3340.78 |read sum=16340.8 count=5 avg=3268.16 |read sum=16074.7 count=5 avg=3214.94
rename sum=9828.65 count=5 avg=1965.73 |rename sum=10049.7 count=5 avg=2009.94 |rename sum=9983.86 count=5 avg=1996.77
rmdir sum=2341.03 count=5 avg=468.20 |rmdir sum=2419.4 count=5 avg=483.88 |rmdir sum=2424.71 count=5 avg=484.94
stat sum=16763.5 count=5 avg=3352.70 |stat sum=16677.8 count=5 avg=3335.56 |stat sum=16870.2 count=5 avg=3374.04
Above runs clearly show fixes with
1. qr as a parent of ob
2. use-anonymous-fd turned on in ob
give better performance when considered all operations holistically.
Just to complete the exercise I am going to schedule a run without any fixes and qr loaded as a parent of ob and update the results.
REVIEW: https://review.gluster.org/21857 (performance/ob: make open-behind as a child of quick-read) posted (#2) for review on master by Amar Tumballi This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-6.0, please open a new bug report. glusterfs-6.0 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution. [1] https://lists.gluster.org/pipermail/announce/2019-March/000120.html [2] https://www.gluster.org/pipermail/gluster-users/ |