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Posted to issues@trafficserver.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/11/02 17:16:59 UTC
[jira] [Work logged] (TS-4719) Should have NUMA affinity for disk
threads (AIO threads)
[ https://issues.apache.org/jira/browse/TS-4719?focusedWorklogId=31441&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-31441 ]
ASF GitHub Bot logged work on TS-4719:
--------------------------------------
Author: ASF GitHub Bot
Created on: 02/Nov/16 17:16
Start Date: 02/Nov/16 17:16
Worklog Time Spent: 10m
Work Description: GitHub user PSUdaemon opened a pull request:
https://github.com/apache/trafficserver/pull/1170
TS-4719: Make AIO threads interleave memory across NUMA nodes.
(cherry picked from commit e5261f4d5edf557fe03571b46eacc61d430425e3)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/PSUdaemon/trafficserver numa_interleave_back_port
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/trafficserver/pull/1170.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1170
----
commit 047d8d81649617779a5213a527210a173585e919
Author: Phil Sorber <so...@apache.org>
Date: 2016-08-16T03:13:26Z
TS-4719: Make AIO threads interleave memory across NUMA nodes.
(cherry picked from commit e5261f4d5edf557fe03571b46eacc61d430425e3)
----
Issue Time Tracking
-------------------
Worklog Id: (was: 31441)
Time Spent: 1h 10m (was: 1h)
> Should have NUMA affinity for disk threads (AIO threads)
> --------------------------------------------------------
>
> Key: TS-4719
> URL: https://issues.apache.org/jira/browse/TS-4719
> Project: Traffic Server
> Issue Type: Improvement
> Components: Cache, Core
> Reporter: Leif Hedstrom
> Assignee: Phil Sorber
> Fix For: 7.0.0
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> We should properly interleave AIO threads (disk threads) evenly across the NUMA nodes, and have affinity on those nodes. That would allow for better memory distribution across NUMA nodes. We've noticed pretty uneven allocations on some boxes, which I attribute to this problem (but no strong evidence, but it does make sense).
> {code}
> Per-node process memory usage (in MBs) for PID 33471 ([ET_NET 0])
> Node 0 Node 1 Total
> --------------- --------------- ---------------
> Huge 0.00 0.00 0.00
> Heap 0.00 0.00 0.00
> Stack 1.38 0.64 2.02
> Private 188993.75 59142.80 248136.55
> ---------------- --------------- --------------- ---------------
> Total 188995.13 59143.44 248138.57
> {code}
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