Bug 1475136
| Summary: | [Perf] : Large file sequential reads are off target by ~38% on FUSE/Ganesha | |||
|---|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Gluster Storage | Reporter: | Ambarish <asoman> | |
| Component: | distribute | Assignee: | Nithya Balachandran <nbalacha> | |
| Status: | CLOSED ERRATA | QA Contact: | Ambarish <asoman> | |
| Severity: | high | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | rhgs-3.3 | CC: | amukherj, asoman, bturner, dang, jthottan, kkeithle, ksandha, mbenjamin, nbalacha, rcyriac, rhinduja, rhs-bugs, sanandpa, skoduri, storage-qa-internal | |
| Target Milestone: | --- | Keywords: | Regression | |
| Target Release: | RHGS 3.3.0 | |||
| Hardware: | x86_64 | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | glusterfs-3.8.4-39 | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1476665 (view as bug list) | Environment: | ||
| Last Closed: | 2017-09-21 05:04:21 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: | ||||
| Bug Depends On: | 1476665 | |||
| Bug Blocks: | 1417151, 1475176, 1479303 | |||
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Description
Ambarish
2017-07-26 07:14:36 UTC
(In reply to Ambarish from comment #0) > Description of problem: > ----------------------- > > A regression seems to have been introduced in recent bits on large file seq > reads : > > 3.3 : 2480044.05 kB/sec > 3.8.4-35 : 1538178.2 kB/sec > > > Regression : ~38% > > This is on a vanilla volume,without PR,NL,mdcache. > > Version-Release number of selected component (if applicable): > ------------------------------------------------------------- > > 3.8.4-35 > > How reproducible: > ----------------- > > 100% > > Additional info: > ---------------- > Volume Name: testvol > Type: Distributed-Replicate > Volume ID: 4b52bfb8-28fd-4e0f-8ee0-eb8116a296c4 > Status: Started > Snapshot Count: 0 > Number of Bricks: 2 x 2 = 4 > Transport-type: tcp > Bricks: > Brick1: gqas013.sbu.lab.eng.bos.redhat.com:/bricks/testvol_brick0 > Brick2: gqas005.sbu.lab.eng.bos.redhat.com:/bricks/testvol_brick1 > Brick3: gqas006.sbu.lab.eng.bos.redhat.com:/bricks/testvol_brick2 > Brick4: gqas008.sbu.lab.eng.bos.redhat.com:/bricks/testvol_brick3 > Options Reconfigured: > server.allow-insecure: on > performance.stat-prefetch: off > transport.address-family: inet > nfs.disable: on Ugh! Typo. I meant : 3.2 : 2480044.05 kB/sec 3.8.4-35 : 1538178.2 kB/sec Regression : ~38% upstream patch : https://review.gluster.org/#/c/17922/ Patch mentioned in comment 20 is not valid any more. New upstream patch : https://review.gluster.org/#/c/17976/ Tested on 3.8.4-39 with Sequential Reads on FUSE Mount and regressions were not seen. Ran 2 different iterations to verify the fix. Waiting for ganesha results to mark it as verified. Over to you ambarish. Consistently close numbers to my baseline on EC/FUSE and Dist-Rep/Ganesha : *EC/FUSE*: Baseline : 2644530 kB/sec 3.8.4-40 : 2477115.03 kB/sec Regression : -6% *Dist/Rep/Ganesha*: Baseline(3.2) : 1430299 kB/sec 3.8.4-40 : 1426718 kB/sec Regression : Not much These are allowable limits that my tests are allowed to have in between releases. Based on https://bugzilla.redhat.com/show_bug.cgi?id=1475136#c28,and this one,I am moving the bug to Verified. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2017:2774 |