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Bug 1897614 - Performance search rate: change entry cache monitor to recursive pthread mutex
Summary: Performance search rate: change entry cache monitor to recursive pthread mutex
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: 389-ds-base
Version: 8.3
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: 8.0
Assignee: thierry bordaz
QA Contact: RHDS QE
URL:
Whiteboard: sync-to-jira
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-11-13 16:14 UTC by thierry bordaz
Modified: 2021-11-09 22:25 UTC (History)
2 users (show)

Fixed In Version: 389-ds-1.4-8050020210514191740-d5c171fc
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-11-09 18:10:45 UTC
Type: Bug
Target Upstream Version:
Embargoed:
pm-rhel: mirror+

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github 389ds 389-ds-base issues 4324 0 None open Performance search rate: change entry cache monitor to recursive pthread mutex 2021-01-21 12:53:10 UTC
Red Hat Product Errata RHBA-2021:4203 0 None None None 2021-11-09 18:11:08 UTC

Description thierry bordaz 2020-11-13 16:14:21 UTC 
Description of problem:

Entry cache (entry and dn) are protected by a PRMonitor. Changing this Monitor into a recursive pthread mutex (cache aligned) increases throughput by 8%
Version-Release number of selected component (if applicable):


How reproducible:
search rate following https://www.port389.org/docs/389ds/development/performance-diagnostic.html


Actual results:
perf c2c shows some pressure on entry cache

Expected results:
Comment 2 sgouvern 2021-05-07 08:07:52 UTC 
Moving to ITM 12, as we may not be ready for ITM 11
Comment 3 thierry bordaz 2021-05-10 07:16:43 UTC 
Upstream ticket is https://github.com/389ds/389-ds-base/issues/4324. Fix is pushed upstream => POST
Comment 10 sgouvern 2021-06-28 14:57:39 UTC 
build 389-ds-base-1.4.3.23-3.module+el8.5.0+11463+c476656c.x86_64.rpm planned for ITM 18 needs a respin - Moving to ITM 19
Comment 11 sgouvern 2021-07-08 12:43:16 UTC 
Using the verification steps described in comment 4, on a 1minutetip machine flavor ocp-compute

With 389-ds-base from RHEL 8.4 released :

      Recent       Recent       Recent       Recent      Overall      Overall
Searches/Sec   Avg Dur ms Entries/Srch   Errors/Sec Searches/Sec   Avg Dur ms
------------ ------------ ------------ ------------ ------------ ------------
   46005.444        1.083        0.000        0.000    46005.422        1.083
   62168.899        0.800        0.000        0.000    54087.621        0.920
   67536.979        0.739        0.000        0.000    58570.257        0.851
   62332.137        0.800        0.000        0.000    59510.599        0.837
   59123.594        0.845        0.000        0.000    59433.191        0.839
   58018.758        0.860        0.000        0.000    59197.472        0.842
   64948.644        0.768        0.000        0.000    60019.000        0.831
   63143.314        0.791        0.000        0.000    60409.575        0.826
   50962.150        0.979        0.000        0.000    59359.958        0.840
   64378.489        0.776        0.000        0.000    59861.865        0.833

On the same machine, after ugrade to 389-ds-base-1.4.3.23-4.module+el8.5.0+11627+16aed726.x86_64 :

      Recent       Recent       Recent       Recent      Overall      Overall
Searches/Sec   Avg Dur ms Entries/Srch   Errors/Sec Searches/Sec   Avg Dur ms
------------ ------------ ------------ ------------ ------------ ------------
   71285.378        0.698        0.000        0.000    71285.354        0.698
   74967.067        0.664        0.000        0.000    73126.217        0.681
   68881.625        0.723        0.000        0.000    71711.398        0.694
   66930.307        0.746        0.000        0.000    70516.243        0.706
   71125.694        0.701        0.000        0.000    70638.146        0.705
   80089.682        0.623        0.000        0.000    72213.308        0.690
   79819.291        0.625        0.000        0.000    73299.964        0.680
   46655.620        1.070        0.000        0.000    69969.808        0.713
   76564.025        0.651        0.000        0.000    70702.562        0.705
   58813.063        0.849        0.000        0.000    69513.737        0.717

Throughput is better with 389-ds-base-1.4.3.23-4.module+el8.5.0+11627+16aed726.x86_64, marking verified : tested
Comment 15 errata-xmlrpc 2021-11-09 18:10:45 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (389-ds-base bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:4203
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