| Summary: | "profile info" lists 'nan' in latency when heavy i/o is running | ||||||
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| Product: | [Community] GlusterFS | Reporter: | M S Vishwanath Bhat <vbhat> | ||||
| Component: | glusterd | Assignee: | Pranith Kumar K <pkarampu> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | mainline | CC: | gluster-bugs, mzywusko, pkarampu, rabhat | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | Type: | --- | |||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
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Description
M S Vishwanath Bhat
2011-03-31 05:47:50 UTC
Running profile info lists nan when dbench is running with 150 clients. I was running dbench with 15 clients for 10 hours and was also running fileop with 35 directory depth. I was taking profile info after every 4000 seconds. After first 4000 seconds i started getting nan in profile results. I have attached profile results file for reference. I have also archived the logs. This bug can be reproduced even without heavy i/o. I Created a replicate setup with two bricks. Created 100 files and read from it. Ran profile info and i consistently got nan in latency. I have archived the logs. PATCH: http://patches.gluster.com/patch/6735 in master (mgmt/glusterd: Fix gluster-profile performance issues) PATCH: http://patches.gluster.com/patch/6736 in master (debug/io-stats: Fix races and performance issues in profile) Its fixed now. profile info does not say nan now. |