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2023-03-29 - 03:22

x86 Intel Atom D2700 @2130 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #1, slot #6
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
Compare latency of primary with shadow system
Characteristics of the 100, highest latencies:
System rack1slot6.osadl.org (updated Wed Mar 29, 2023 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3611240,0irq_work/3381rcuc/322:41:093
3611220,0irq_work/3381rcuc/319:30:483
2211210,0irq_work/1241rcuc/121:10:431
3611180,0irq_work/3381rcuc/321:56:193
3611180,0irq_work/3381rcuc/321:56:193
2211140,0irq_work/1241rcuc/122:55:431
3611110,0irq_work/3381rcuc/320:11:033
3611100,0irq_work/3381rcuc/323:51:163
2211100,0irq_work/1241rcuc/122:00:481
2211100,0irq_work/1241rcuc/122:00:481
3611080,0irq_work/3381rcuc/322:56:473
3611080,0irq_work/3381rcuc/322:50:483
3611070,0irq_work/3381rcuc/320:41:193
2211070,0irq_work/1241rcuc/121:46:191
3611060,0irq_work/3381rcuc/321:41:223
2211060,0irq_work/1241rcuc/122:20:481
3611050,0irq_work/3381rcuc/323:10:553
3611050,0irq_work/3381rcuc/322:51:163
3611040,0irq_work/3381rcuc/322:21:023
3611040,0irq_work/3381rcuc/300:11:033
3611030,0irq_work/3381rcuc/323:28:113
3611020,0irq_work/3381rcuc/319:36:153
3611010,0irq_work/3381rcuc/300:26:463
3611000,0irq_work/3381rcuc/320:03:453
3611000,0irq_work/3381rcuc/300:10:423
2211000,0irq_work/1241rcuc/121:16:161
2211000,0irq_work/1241rcuc/121:00:491
221990,0irq_work/1241rcuc/121:36:171
361980,0irq_work/3381rcuc/322:26:023
361980,0irq_work/3381rcuc/320:26:473
291980,0irq_work/2311rcuc/221:56:522
291980,0irq_work/2311rcuc/221:56:522
361970,0irq_work/3381rcuc/322:01:173
361960,0irq_work/3381rcuc/323:36:083
361960,0irq_work/3381rcuc/319:42:593
361960,0irq_work/3381rcuc/319:25:323
221960,0irq_work/1241rcuc/120:10:431
361950,0irq_work/3381rcuc/323:16:043
361950,0irq_work/3381rcuc/320:51:203
361950,0irq_work/3381rcuc/320:51:203
221940,0irq_work/1241rcuc/122:12:141
361930,0irq_work/3381rcuc/319:16:153
221930,0irq_work/1241rcuc/120:16:211
361920,0irq_work/3381rcuc/322:34:043
361920,0irq_work/3381rcuc/321:21:273
361920,0irq_work/3381rcuc/320:16:063
361920,0irq_work/3381rcuc/320:00:483
361920,0irq_work/3381rcuc/319:06:103
361910,0irq_work/3381rcuc/321:40:433
361910,0irq_work/3381rcuc/319:31:083
221910,0irq_work/1241rcuc/122:42:571
221910,0irq_work/1241rcuc/119:16:171
361900,0irq_work/3381rcuc/323:46:083
221900,0irq_work/1241rcuc/123:41:141
221900,0irq_work/1241rcuc/123:25:481
221900,0irq_work/1241rcuc/123:01:161
221900,0irq_work/1241rcuc/120:05:431
221900,0irq_work/1241rcuc/119:40:481
361890,0irq_work/3381rcuc/320:08:303
221880,0irq_work/1241rcuc/123:50:481
361870,0irq_work/3381rcuc/323:21:033
361870,0irq_work/3381rcuc/322:35:493
361870,0irq_work/3381rcuc/322:15:433
361870,0irq_work/3381rcuc/321:54:043
361870,0irq_work/3381rcuc/319:50:433
361870,0irq_work/3381rcuc/319:50:433
221870,0irq_work/1241rcuc/121:51:231
221870,0irq_work/1241rcuc/119:56:171
361860,0irq_work/3381rcuc/323:31:143
361860,0irq_work/3381rcuc/321:31:183
361860,0irq_work/3381rcuc/321:07:083
221860,0irq_work/1241rcuc/120:11:211
221860,0irq_work/1241rcuc/119:11:151
221860,0irq_work/1241rcuc/100:20:471
221860,0irq_work/1241rcuc/100:20:471
361850,0irq_work/3381rcuc/321:16:453
361850,0irq_work/3381rcuc/300:24:493
361850,0irq_work/3381rcuc/300:03:273
2829799852,0cyclictest210099rtkit-daemon21:39:400
221850,0irq_work/1241rcuc/121:41:081
221840,0irq_work/1241rcuc/100:05:471
361830,0irq_work/3381rcuc/300:18:243
361830,0irq_work/3381rcuc/300:18:243
221830,0irq_work/1241rcuc/123:51:041
221830,0irq_work/1241rcuc/122:36:171
221830,0irq_work/1241rcuc/122:21:161
221830,0irq_work/1241rcuc/121:30:491
221830,0irq_work/1241rcuc/119:50:491
361820,0irq_work/3381rcuc/323:56:403
361820,0irq_work/3381rcuc/323:43:403
361820,0irq_work/3381rcuc/320:50:483
361820,0irq_work/3381rcuc/319:54:003
221820,0irq_work/1241rcuc/100:25:421
221810,0irq_work/1241rcuc/123:36:111
361800,0irq_work/3381rcuc/322:06:233
361800,0irq_work/3381rcuc/320:56:193
361790,0irq_work/3381rcuc/322:17:403
361790,0irq_work/3381rcuc/319:12:463
221790,0irq_work/1241rcuc/121:00:481
221790,0irq_work/1241rcuc/120:36:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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