[SERVER-27132] Mongo response time increased in 15-20% after upgrade to 3.2.10 Created: 20/Nov/16 Updated: 06/Dec/16 Resolved: 06/Dec/16 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | WiredTiger |
| Affects Version/s: | 3.2.10 |
| Fix Version/s: | None |
| Type: | Question | Priority: | Major - P3 |
| Reporter: | Avraham Kalvo | Assignee: | Kelsey Schubert |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
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| Sprint: | Storage 2016-12-12 | ||||||||
| Participants: | |||||||||
| Description |
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We have upgraded our replica set from 3.0 to 3.2.9 and then to 3.2.10 six month ago (see ticket # Enclosed please find are logs files for the last week, where this symptom continued We wish to try and understand with you, We were expecting to upgrade to improve performance measured by response time, rather that decrease it, as you can understand. Thanks, |
| Comments |
| Comment by Kelsey Schubert [ 06/Dec/16 ] |
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Hi avrahamk, I've examined the diagnostic.data you've provided. Unfortunately, without a benchmark it is challenging to identify the cause of the increase in response time. The spikes in the response time may be caused by the application layer. For example, I see some spikes occur when a large number of aggregation commands received by MongoDB. For suggestions on how to improve your application layer, please post on the mongodb-users group or Stack Overflow with the mongodb tag. A question like this involving more discussion would be best posted on the mongodb-users group. Since there isn't enough information here for us to modify the our codebase to improve performance, I'm going to close this ticket. If you can generate a workload that demonstrates this issue between MongoDB 3.2.10 and earlier versions, please let us know. We are continually working to improve the performance of WiredTiger and would be able to benchmark our performance against your workload. Kind regards, |
| Comment by Avraham Kalvo [ 20/Nov/16 ] |
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Enclosed please find are the files discussed, Trying to look and see whether we have log files to compare with other than the ones reported on the 3.2.9 -> 3.2.10 (reported here by) Thanks, |
| Comment by Avraham Kalvo [ 20/Nov/16 ] |
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Log files and diagnostics to follow soon |
| Comment by Avraham Kalvo [ 20/Nov/16 ] |
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Enclosed please find is the deterioration experienced in response time ever since the upgrade, Thanks, |