Bug 1749840
| Summary: | [OVN]cpu is high after create a lot of logical ports | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux Fast Datapath | Reporter: | haidong li <haili> |
| Component: | openvswitch2.11 | Assignee: | Flavio Leitner <fleitner> |
| Status: | CLOSED NOTABUG | QA Contact: | Jianlin Shi <jishi> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | FDP 19.F | CC: | ctrautma, dcbw, fhallal, fleitner, jhsiao, jiji, jishi, nusiddiq, ralongi |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 1748731 | Environment: | |
| Last Closed: | 2019-12-12 03:25:40 UTC | Type: | --- |
| 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: | 1748731 | ||
| Bug Blocks: | 1749610 | ||
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Comment 1
Numan Siddique
2019-09-09 09:46:41 UTC
I have tried with dell-per740-12.rhts.eng.pek2.redhat.com and dell-per730-40.rhts.eng.pek2.redhat.com to reproduce the issue. the adding of logical ports are still in progress. but the cpu usage for ovs-vswitched is already very high. you can log in with root/redhat Hi, Looks like runtest.sh is trying to add one port at a time using ovs-vsctl command and already added 1762 ports. The problem is that every time a port is added, OvS has to reconfigure itself, flush data like FDB and so on. The load issue is an old complain and we already have a few bugs about that, but the questions remain open. See: https://bugzilla.redhat.com/show_bug.cgi?id=1731165 I am not sure about the goal of the test. If you just want to add as many ports as possible to run other tests maybe the batch solution proposed in the BZ above solves the issue. Thanks fbl (In reply to Flavio Leitner from comment #5) > Hi, > > Looks like runtest.sh is trying to add one port at a time using ovs-vsctl > command and already added 1762 ports. > The problem is that every time a port is added, OvS has to reconfigure > itself, flush data like FDB and so on. > The load issue is an old complain and we already have a few bugs about that, > but the questions remain open. > > See: https://bugzilla.redhat.com/show_bug.cgi?id=1731165 > > I am not sure about the goal of the test. If you just want to add as many > ports as possible to run other tests > maybe the batch solution proposed in the BZ above solves the issue. > > Thanks > fbl confirmed that cpu usage would be low after finish adding ports. but it's really slow to add mass of ports, any bug to track that? (In reply to Jianlin Shi from comment #6) > confirmed that cpu usage would be low after finish adding ports. > but it's really slow to add mass of ports, any bug to track that? The recommendation is to add ports in batches then. It's one single operation inside OvS to add the batch. fbl (In reply to Flavio Leitner from comment #7) > (In reply to Jianlin Shi from comment #6) > > confirmed that cpu usage would be low after finish adding ports. > > but it's really slow to add mass of ports, any bug to track that? > > The recommendation is to add ports in batches then. > It's one single operation inside OvS to add the batch. > > fbl ok (In reply to Jianlin Shi from comment #8) Can we close the bug? fbl (In reply to Flavio Leitner from comment #9) > (In reply to Jianlin Shi from comment #8) > Can we close the bug? > fbl yes, please close it per comment 7 Thank you! fbl *** Bug 1749610 has been marked as a duplicate of this bug. *** |