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2022-08-11 - 16:09

x86 Intel Core i7-2600K @3400 MHz, Linux 5.9.0-rc2-rt1 (Profile)

Latency plot of system in rack #4, 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 -h200 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100, highest latencies:
System rack4slot6.osadl.org (updated Thu Aug 11, 2022 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27388521090,99pltrace0-21swapper/207:07:292
27388521040,100pltrace0-21swapper/607:07:136
30197521010,95pltrace0-21swapper/407:08:224
3019752920,86pltrace0-21swapper/007:07:480
3032028863,12sleep30-21swapper/307:09:143
3025728165,12sleep50-21swapper/507:08:195
3012727458,12sleep10-21swapper/107:06:481
87992730,3sleep33061799cyclictest10:20:203
1132452690,1pltrace11328-21pltrace-run08:27:313
1132452690,1pltrace11328-21pltrace-run08:27:313
2818752680,1pltrace1552-21pltrace-run08:57:316
2401052670,0pltrace0-21swapper/107:52:301
215842670,1sleep730588-21cyclictest09:29:527
89582660,0sleep60-21swapper/609:49:226
222072640,0sleep30-21swapper/308:45:263
3020526347,12sleep70-21swapper/707:07:337
249522630,0sleep60-21swapper/610:36:016
45992620,0sleep70-21swapper/711:55:107
132362620,1sleep30-21swapper/309:52:563
143152610,0pltrace0-21swapper/009:07:310
319412520,4sleep63063799cyclictest08:05:246
47532210,1sleep10-21swapper/107:20:011
199472200,1sleep20-21swapper/209:26:432
2965252190,1pltrace29656-21pltrace-run08:02:302
76302180,1sleep1181rcuc/111:25:001
30625991816,1cyclictest0-21swapper/411:50:234
3052552180,6pltrace32483-21grep11:50:132
2119752180,1pltrace21202-21pltrace-run07:47:302
182142180,0chrt0-21swapper/307:40:293
1072852180,1pltrace37-21ksoftirqd/410:24:164
2844152170,0pltrace0-21swapper/211:12:302
2808752170,1pltrace9-21ksoftirqd/010:12:270
265532170,0sleep10-21swapper/111:10:181
2119752170,6pltrace3063799cyclictest07:47:316
1802352170,2pltrace111rcu_preempt10:01:150
121902170,0sleep40-21swapper/408:30:134
121902170,0sleep40-21swapper/408:30:134
800552160,2pltrace9-21ksoftirqd/009:50:340
3196152160,1pltrace25-21ksoftirqd/212:22:482
3063799168,6cyclictest4562-21kernelversion08:15:156
3035152160,11pltrace0-21swapper/009:38:490
2074052160,9pltrace0-21swapper/210:34:572
2074052160,9pltrace0-21swapper/010:35:380
1748952160,10pltrace0-21swapper/012:11:000
1537252160,10pltrace19190-21sed09:25:275
1301452160,6pltrace3062599cyclictest09:52:304
1072852160,1pltrace11623-21ssh10:24:150
919052150,1pltrace10238-21ssh12:34:424
919052150,0pltrace0-21swapper/012:34:090
839552150,9pltrace0-21swapper/010:56:510
81902150,0chrt0-21swapper/407:25:164
800552150,9pltrace0-21swapper/509:50:335
800552150,5pltrace0-21swapper/709:50:177
800552150,10pltrace0-21swapper/009:49:430
779552150,1pltrace11142-21switchtime12:00:252
64452150,2pltrace111rcu_preempt10:12:515
533352150,9pltrace0-21swapper/509:12:565
3196152150,0pltrace0-21swapper/512:22:375
3076752150,8pltrace0-21swapper/010:46:050
3076752150,1pltrace37-21ksoftirqd/410:45:584
3063799150,14cyclictest0-21swapper/609:40:256
3063799150,1cyclictest0-21swapper/610:00:316
30625991513,1cyclictest0-21swapper/411:35:234
3062599151,2cyclictest0-21swapper/411:24:504
3062599151,12cyclictest0-21swapper/412:25:234
30617991510,4cyclictest0-21swapper/309:40:173
2818752150,1pltrace0-21swapper/509:00:245
2818752150,1pltrace0-21swapper/009:00:230
2682352150,0pltrace0-21swapper/008:02:050
2347752150,1pltrace24036-21ssh11:08:352
1802352150,4pltrace0-21swapper/710:02:047
1748952150,1pltrace37-21ksoftirqd/412:12:084
1537252150,9pltrace0-21swapper/009:24:530
143152150,1pltrace5307-21ssh09:12:292
1114552150,0pltrace0-21swapper/011:29:360
1072852150,9pltrace0-21swapper/610:24:326
1072852150,8pltrace0-21swapper/210:23:582
106652150,9pltrace0-21swapper/411:19:294
106652150,0pltrace0-21swapper/011:18:310
919052140,5pltrace0-21swapper/512:34:355
800552140,1pltrace11895-21vmstat09:50:262
779552140,4pltrace0-21swapper/511:59:505
779552140,1pltrace11976-21sh12:01:084
779552140,0pltrace0-21swapper/512:00:505
715152140,2pltrace8809-21iostat_ios07:25:220
64452140,2pltrace111rcu_preempt10:13:164
64452140,0pltrace0-21swapper/210:13:162
533352140,0pltrace0-21swapper/009:12:390
3196152140,8pltrace0-21swapper/012:22:560
3196152140,3pltrace0-21swapper/412:23:474
3076752140,5pltrace0-21swapper/710:46:227
3076752140,0pltrace0-21swapper/210:46:312
3063799140,13cyclictest0-21swapper/611:25:406
3063799140,1cyclictest0-21swapper/610:46:386
3061799140,2cyclictest302-21rm12:24:113
3061799140,13cyclictest0-21swapper/312:33:213
3061799140,13cyclictest0-21swapper/310:52:403
3061799140,10cyclictest0-21swapper/312:18:173
30609991412,1cyclictest0-21swapper/212:06:392
3059799141,2cyclictest1026-13audispd10:29:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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