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2021-09-28 - 08:44

Intel(R) Xeon(R) CPU E3-1265L V2 @ 2.50GHz, Linux 4.14.28-rt23 (Profile)

Latency plot of system in rack #0, slot #0
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack0slot0.osadl.org (updated Tue Sep 28, 2021 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
691821920,3sleep6692499cyclictest23:09:026
2472021900,2sleep7693199cyclictest23:03:037
940921850,3sleep7693199cyclictest00:31:287
1079421810,0sleep7693199cyclictest22:02:337
539821700,3sleep4691499cyclictest23:58:544
523721690,4sleep5691999cyclictest23:18:245
2897021680,0sleep228942-21sshd00:33:402
1833521670,1sleep30-21swapper/323:58:053
2823321630,3sleep2690299cyclictest21:46:012
3157121540,1sleep5691999cyclictest21:34:175
1786021540,0sleep417859-21bash22:53:214
1784721440,1sleep3411ktimersoftd/323:44:343
1820621430,4sleep5691999cyclictest23:01:235
316421230,1sleep11-21systemd22:35:221
1762321220,4sleep4691499cyclictest21:41:384
1684421220,1sleep316836-21sshd23:02:423
1682021220,1sleep50-21swapper/523:39:075
2667521200,0sleep00-21swapper/022:48:200
1209121180,1sleep2321ktimersoftd/221:38:472
1144121180,0sleep60-21swapper/623:22:426
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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