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Posted to issues@trafficserver.apache.org by "Phil Sorber (JIRA)" <ji...@apache.org> on 2016/11/02 17:31:58 UTC
[jira] [Updated] (TS-4719) Should have NUMA affinity for disk
threads (AIO threads)
[ https://issues.apache.org/jira/browse/TS-4719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Phil Sorber updated TS-4719:
----------------------------
Backport to Version: (was: 6.2.1)
> 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: 6.2.1, 7.0.0
>
> Time Spent: 1h 50m
> 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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