[SERVER-12554] Count queries negatively impact concurrency Created: 30/Jan/14 Updated: 11/Jul/16 Resolved: 18/Feb/14 |
|
| Status: | Closed |
| Project: | Core Server |
| Component/s: | Concurrency, Querying |
| Affects Version/s: | 2.5.5 |
| Fix Version/s: | 2.6.0-rc0 |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Davide Italiano | Assignee: | Davide Italiano |
| Resolution: | Done | Votes: | 0 |
| Labels: | 26qa | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Environment: |
Linux ip-10-232-37-146.ec2.internal 2.6.32-358.14.1.el6.x86_64 #1 SMP Mon Jun 17 15:54:20 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux |
||
| Issue Links: |
|
||||||||
| Operating System: | ALL | ||||||||
| Participants: | |||||||||
| Description |
|
My query concurrency tests showed up a clear regression when different kind of queries are executed concurrently.
The commit that caused the regression is:
I more carefully looked at the server logs and realized there's something unusual:
Lots of yields – apparently this didn't happen before the change.
|
| Comments |
| Comment by Githook User [ 25/Mar/14 ] |
|
Author: {u'username': u'hkhalsa', u'name': u'Hari Khalsa', u'email': u'hkhalsa@10gen.com'}Message: Revert " This reverts commit 2850cc7253344c639bc9a01bc6dff3ffd2cca422. |
| Comment by Githook User [ 25/Mar/14 ] |
|
Author: {u'username': u'hkhalsa', u'name': u'Hari Khalsa', u'email': u'hkhalsa@10gen.com'}Message: Revert " This reverts commit 2850cc7253344c639bc9a01bc6dff3ffd2cca422. |
| Comment by Githook User [ 18/Feb/14 ] |
|
Author: {u'username': u'dcci', u'name': u'Davide Italiano', u'email': u'davide.italiano@10gen.com'}Message: This avoids a regression when scanning a small set of documents. |
| Comment by Githook User [ 12/Feb/14 ] |
|
Author: {u'username': u'IanWhalen', u'name': u'Ian Whalen', u'email': u'ian@mongodb.com'}Message: Revert " This reverts commit d6873ccb663a07de47738af913fd25ceff23296f. Reverting because commit broke counttests.cpp in core suite on all platforms |
| Comment by Githook User [ 11/Feb/14 ] |
|
Author: {u'username': u'dcci', u'name': u'Davide Italiano', u'email': u'davide.italiano@10gen.com'}Message: |
| Comment by Githook User [ 11/Feb/14 ] |
|
Author: {u'username': u'dcci', u'name': u'Davide Italiano', u'email': u'davide.italiano@10gen.com'}Message: |