Leif Hedstrom created TS-4719:
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Summary: 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
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. I'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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