[SERVER-28405] Performance degradation 3.4.2 vs 3.2.11 Created: 21/Mar/17 Updated: 27/Oct/23 Resolved: 03/Apr/17 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | WiredTiger |
| Affects Version/s: | 3.4.2 |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Luke Morfitt | Assignee: | Bruce Lucas (Inactive) |
| Resolution: | Gone away | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Attachments: |
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| Operating System: | ALL |
| Participants: |
| Description |
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Hello, We have a rather large mongo replica set containing 19,000 dbs. We have an outstanding issue with wiredTiger cache as per https://jira.mongodb.org/browse/SERVER-27700 and https://jira.mongodb.org/browse/SERVER-27753. As we are expecting the change to be in the next 3.4.x-rc we upgraded our cluster from 3.2.11 to 3.4.2 to understand the current performance characteristics and hope that we would gain some improvement. Since the upgrade (less than 24 hours) our jobs (which use this cluster) are now taking many hours to finish. In fact some of them have not finished running and we have canceled them. The following a screen shot of job run times and how mongo 3.2.11 / 3.4.2 impacts the run time. Please can you provide an upload link and I will provide the diagnostic data for the cluster. Kind regards, |
| Comments |
| Comment by Luke Morfitt [ 30/Mar/17 ] |
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Hi, Sorry for the delay getting back to you. As 3.4.3 has been released I would like to close this ticket and retest. 3.4.3 has the performance fix we have been waiting for. Thank you for your continued support, |
| Comment by Bruce Lucas (Inactive) [ 22/Mar/17 ] |
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Hi Luke, I'd like to add another question: your chart shows a restart under 3.2.11 at 20.03 00:00, but I'm not seeing that in the logs or diagnostic data you uploade. Can you clarify what node was restarted? Thanks, |
| Comment by Bruce Lucas (Inactive) [ 22/Mar/17 ] |
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Hi Luke, Thanks for uploading the data, we're taking a look. I'd like to correlate the events in your chart with our data. Can you clarify:
Regarding the jobs can you clarify
Thanks, |
| Comment by Luke Morfitt [ 21/Mar/17 ] |
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Hi anonymous.user, Thank you. I've uploaded the data from all the nodes in the replica set. Kind regards, |
| Comment by Kelsey Schubert [ 21/Mar/17 ] |
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Hi lukemorfitt, I've created a secure portal, would you please upload the the complete log files as well as the diagnostic.data? Thank you, |