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2023-01-28 - 08:01

x86 Intel Xeon E3-1270 v2 @3500 MHz, Linux 4.19.25-rt16 (Profile)

Latency plot of system in rack #3, 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 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100 highest latencies:
System rack3slot0.osadl.org (updated Sat Jan 28, 2023 00:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1524126028,18sleep20-21swapper/219:00:452
1601824825,8sleep10-21swapper/119:04:441
14522480,0sleep40-21swapper/421:45:494
14522480,0sleep40-21swapper/421:45:494
234742430,1sleep423473-21id23:40:414
234742430,1sleep423473-21id23:40:414
1578324331,9sleep30-21swapper/319:01:343
144802420,0sleep00-21swapper/023:32:280
144802420,0sleep00-21swapper/023:32:280
1591024129,8sleep50-21swapper/519:03:125
1581324027,9sleep70-21swapper/719:01:547
1578423927,9sleep40-21swapper/419:01:354
1575223825,9sleep00-21swapper/019:01:070
1358723826,8sleep60-21swapper/619:00:256
16206991614,1cyclictest57-21ksoftirqd/500:23:455
16206991614,1cyclictest57-21ksoftirqd/500:23:455
16193991610,2cyclictest9-21ksoftirqd/022:24:420
16193991610,2cyclictest9-21ksoftirqd/022:24:420
16193991513,1cyclictest9-21ksoftirqd/022:37:450
16193991513,1cyclictest9-21ksoftirqd/022:37:450
16193991510,3cyclictest9-21ksoftirqd/021:47:490
16193991510,3cyclictest9-21ksoftirqd/021:47:490
1619399150,1cyclictest12365-21perl00:30:340
1619399150,1cyclictest12365-21perl00:30:340
16206991412,1cyclictest57-21ksoftirqd/522:52:235
16206991412,1cyclictest57-21ksoftirqd/522:52:235
1619399149,2cyclictest9-21ksoftirqd/022:29:470
1619399149,2cyclictest9-21ksoftirqd/022:29:470
16193991413,1cyclictest9-21ksoftirqd/022:34:370
16193991413,1cyclictest9-21ksoftirqd/022:34:370
16193991412,2cyclictest9-21ksoftirqd/021:52:170
255582130,0sleep70-21swapper/721:08:377
255582130,0sleep70-21swapper/721:08:377
16206991312,1cyclictest57-21ksoftirqd/500:05:415
16206991312,1cyclictest57-21ksoftirqd/500:05:415
16206991311,1cyclictest57-21ksoftirqd/523:59:195
16206991311,1cyclictest57-21ksoftirqd/523:59:195
16206991311,1cyclictest57-21ksoftirqd/500:16:175
16206991311,1cyclictest57-21ksoftirqd/500:16:175
1619599135,2cyclictest25-21ksoftirqd/123:01:571
1619599135,2cyclictest25-21ksoftirqd/123:01:571
16195991311,1cyclictest25-21ksoftirqd/122:35:471
16195991311,1cyclictest25-21ksoftirqd/122:35:471
1619399139,1cyclictest121rcu_preempt00:05:510
1619399139,1cyclictest121rcu_preempt00:05:510
1619399136,5cyclictest9-21ksoftirqd/019:20:210
1619399136,5cyclictest9-21ksoftirqd/019:20:210
16193991311,1cyclictest9-21ksoftirqd/021:56:050
16193991311,1cyclictest9-21ksoftirqd/021:56:050
16193991311,1cyclictest9-21ksoftirqd/021:15:210
16193991311,1cyclictest9-21ksoftirqd/021:15:210
16193991310,2cyclictest12711-21systemd21:25:500
1619399130,1cyclictest131rcu_sched23:14:250
1619399130,1cyclictest131rcu_sched23:14:250
16206991211,1cyclictest57-21ksoftirqd/521:30:355
16206991210,1cyclictest57-21ksoftirqd/523:05:465
16206991210,1cyclictest57-21ksoftirqd/523:04:245
16206991210,1cyclictest57-21ksoftirqd/523:04:245
16206991210,1cyclictest57-21ksoftirqd/522:20:215
16206991210,1cyclictest57-21ksoftirqd/522:20:215
16206991210,1cyclictest57-21ksoftirqd/521:50:345
16206991210,1cyclictest57-21ksoftirqd/521:45:445
16206991210,1cyclictest57-21ksoftirqd/521:45:445
16206991210,1cyclictest57-21ksoftirqd/521:44:425
16206991210,1cyclictest57-21ksoftirqd/521:44:425
16195991210,1cyclictest25-21ksoftirqd/122:06:481
16195991210,1cyclictest25-21ksoftirqd/122:06:481
1619399127,3cyclictest9-21ksoftirqd/023:00:010
1619399127,3cyclictest9-21ksoftirqd/023:00:010
1619399127,2cyclictest9-21ksoftirqd/022:05:430
1619399127,2cyclictest9-21ksoftirqd/022:05:430
1619399127,2cyclictest9-21ksoftirqd/000:04:330
1619399127,2cyclictest9-21ksoftirqd/000:04:330
1619399122,1cyclictest9-21ksoftirqd/023:25:100
1619399122,1cyclictest9-21ksoftirqd/023:25:100
16193991211,1cyclictest9-21ksoftirqd/022:40:400
16193991211,1cyclictest9-21ksoftirqd/022:40:400
16193991210,1cyclictest9-21ksoftirqd/023:58:420
16193991210,1cyclictest9-21ksoftirqd/023:58:420
16193991210,1cyclictest9-21ksoftirqd/021:42:560
16193991210,1cyclictest9-21ksoftirqd/021:42:560
16193991210,1cyclictest9-21ksoftirqd/021:15:350
16193991210,1cyclictest9-21ksoftirqd/021:15:350
16193991210,1cyclictest9-21ksoftirqd/019:50:210
16193991210,1cyclictest9-21ksoftirqd/000:25:280
16193991210,1cyclictest9-21ksoftirqd/000:25:280
1619399120,12cyclictest32499-21kworker/0:022:48:150
1619399120,12cyclictest32499-21kworker/0:022:48:150
1619399120,12cyclictest20530-21kworker/0:023:38:150
1619399120,12cyclictest20530-21kworker/0:023:38:150
1619399120,1cyclictest131rcu_sched22:16:360
1619399120,1cyclictest131rcu_sched22:16:360
1620899119,1cyclictest19998-21kworker/7:023:46:447
1620899119,1cyclictest19998-21kworker/7:000:03:167
1620899119,1cyclictest19998-21kworker/7:000:03:167
1620899119,1cyclictest19812-21kworker/7:221:48:367
1620899119,1cyclictest19812-21kworker/7:221:48:367
1620899119,1cyclictest18711-21kworker/7:219:41:557
1620899119,1cyclictest18711-21kworker/7:219:41:557
1620699119,1cyclictest57-21ksoftirqd/523:27:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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