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2022-12-01 - 23:43

x86 Intel Atom E3845 @1910 MHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #3
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 -Up99 -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 100, highest latencies:
System rackdslot3.osadl.org (updated Wed Nov 30, 2022 12:46:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34562142119,10sleep30-21swapper/307:08:123
3883998980,4cyclictest33-21ksoftirqd/207:20:142
3883998980,4cyclictest33-21ksoftirqd/207:20:132
3883998777,5cyclictest33-21ksoftirqd/209:10:122
3883998677,4cyclictest33-21ksoftirqd/210:45:152
3883998677,4cyclictest33-21ksoftirqd/208:15:132
3883998676,5cyclictest33-21ksoftirqd/210:50:142
3883998476,4cyclictest33-21ksoftirqd/212:35:202
3883998375,4cyclictest33-21ksoftirqd/209:15:192
3883998374,5cyclictest33-21ksoftirqd/208:35:142
32562806,61sleep20-21swapper/207:05:402
3883997971,4cyclictest33-21ksoftirqd/212:20:142
3883997970,5cyclictest33-21ksoftirqd/211:55:132
3883997870,5cyclictest33-21ksoftirqd/207:50:132
3883997870,4cyclictest33-21ksoftirqd/211:00:152
3883997868,6cyclictest33-21ksoftirqd/211:05:202
3883997668,4cyclictest33-21ksoftirqd/211:30:162
3883997565,6cyclictest33-21ksoftirqd/212:15:152
3883997466,5cyclictest33-21ksoftirqd/207:10:122
3883997463,6cyclictest33-21ksoftirqd/212:25:152
3883997362,7cyclictest33-21ksoftirqd/209:35:292
3883997260,6cyclictest33-21ksoftirqd/209:25:152
825591710,4ptp4l401ktimersoftd/307:10:013
825591710,2ptp4l401ktimersoftd/310:35:353
3883997059,6cyclictest33-21ksoftirqd/208:40:132
3883997057,8cyclictest33-21ksoftirqd/208:25:132
3883997057,7cyclictest33-21ksoftirqd/210:25:152
3883996855,7cyclictest33-21ksoftirqd/208:10:132
3883996755,6cyclictest33-21ksoftirqd/208:55:172
3883996432,7cyclictest33-21ksoftirqd/207:45:002
3883996252,6cyclictest33-21ksoftirqd/212:00:142
3883996128,4cyclictest33-21ksoftirqd/209:40:302
3883996048,7cyclictest33-21ksoftirqd/207:55:142
3883995824,4cyclictest33-21ksoftirqd/210:10:332
3883995730,5cyclictest33-21ksoftirqd/212:15:012
3883995649,4cyclictest33-21ksoftirqd/211:20:042
3883995624,4cyclictest33-21ksoftirqd/209:30:202
3883995515,10cyclictest33-21ksoftirqd/209:45:312
825591540,1ptp4l401ktimersoftd/307:28:133
3883995448,4cyclictest33-21ksoftirqd/211:40:012
3883995447,4cyclictest33-21ksoftirqd/210:20:012
3883995447,4cyclictest33-21ksoftirqd/210:20:002
3883995421,4cyclictest33-21ksoftirqd/211:10:202
3883995347,3cyclictest33-21ksoftirqd/211:29:592
3883995347,3cyclictest33-21ksoftirqd/208:25:002
3883995343,5cyclictest33-21ksoftirqd/211:45:202
3883995330,4cyclictest33-21ksoftirqd/210:20:182
388399527,3cyclictest33-21ksoftirqd/207:15:172
388399527,3cyclictest33-21ksoftirqd/207:15:162
3883995222,7cyclictest33-21ksoftirqd/208:10:002
3883995221,4cyclictest33-21ksoftirqd/211:40:152
3883995221,4cyclictest33-21ksoftirqd/211:40:152
3883995215,10cyclictest33-21ksoftirqd/210:40:232
3883995139,4cyclictest33-21ksoftirqd/207:35:282
3883995135,13cyclictest33-21ksoftirqd/208:00:242
3883995132,10cyclictest33-21ksoftirqd/212:30:162
388399505,4cyclictest121rcu_preempt09:10:002
388399505,3cyclictest33-21ksoftirqd/212:05:382
3883995043,4cyclictest33-21ksoftirqd/207:35:002
3883994941,4cyclictest33-21ksoftirqd/210:30:172
3883994938,4cyclictest33-21ksoftirqd/210:55:272
3883994842,3cyclictest33-21ksoftirqd/211:55:002
3883994842,3cyclictest33-21ksoftirqd/210:05:262
3883994842,3cyclictest33-21ksoftirqd/209:55:002
3883994842,3cyclictest33-21ksoftirqd/208:50:002
3883994841,4cyclictest33-21ksoftirqd/209:05:002
3883994837,4cyclictest33-21ksoftirqd/208:30:252
8259914717,4phc2sys121rcu_preempt08:50:223
8259914717,4phc2sys121rcu_preempt08:50:213
388399475,4cyclictest121rcu_preempt09:55:222
3883994740,3cyclictest33-21ksoftirqd/211:20:002
388399470,3cyclictest121rcu_preempt07:46:102
825591460,1ptp4l401ktimersoftd/310:10:303
3883994641,3cyclictest33-21ksoftirqd/208:52:592
3883994641,3cyclictest33-21ksoftirqd/208:52:582
3883994640,3cyclictest33-21ksoftirqd/210:39:592
358324615,18sleep00-21swapper/007:09:500
144724614,18sleep10-21swapper/107:05:111
3883994540,3cyclictest33-21ksoftirqd/209:20:162
3883994539,3cyclictest33-21ksoftirqd/210:04:592
3883994537,4cyclictest33-21ksoftirqd/207:25:302
3882994538,4cyclictest25-21ksoftirqd/111:04:591
825591440,1ptp4l401ktimersoftd/310:32:383
825591440,1ptp4l401ktimersoftd/308:20:163
3882994337,4cyclictest25-21ksoftirqd/112:15:171
3882994336,4cyclictest25-21ksoftirqd/111:55:001
825591420,1ptp4l401ktimersoftd/310:20:173
3882994235,4cyclictest25-21ksoftirqd/111:28:501
3882994235,4cyclictest25-21ksoftirqd/110:20:011
3882994235,4cyclictest25-21ksoftirqd/110:20:001
3882994136,3cyclictest25-21ksoftirqd/111:00:011
3882994135,4cyclictest25-21ksoftirqd/109:33:291
3882994133,4cyclictest25-21ksoftirqd/112:30:261
825591400,1ptp4l401ktimersoftd/312:20:143
3884994032,6cyclictest41-21ksoftirqd/310:25:323
3882994034,4cyclictest25-21ksoftirqd/109:53:331
3882994034,3cyclictest25-21ksoftirqd/108:35:361
449923931,4sleep09-21ksoftirqd/007:10:190
3884993934,3cyclictest41-21ksoftirqd/312:00:003
3882993933,4cyclictest25-21ksoftirqd/109:38:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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