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2021-08-04 - 21:53

Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz, 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 Wed Aug 04, 2021 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8539521500,138pltrace0-21swapper/507:05:125
8539521500,138pltrace0-21swapper/507:05:125
8539521410,136pltrace0-21swapper/107:06:401
8539521410,136pltrace0-21swapper/107:06:401
11278521140,104pltrace0-21swapper/607:09:456
11278521140,104pltrace0-21swapper/607:09:456
1105429085,3sleep30-21swapper/307:06:423
1105429085,3sleep30-21swapper/307:06:423
1105129085,3sleep00-21swapper/007:06:390
1105129085,3sleep00-21swapper/007:06:390
1127252790,4pltrace1159299cyclictest11:04:387
1118427652,7sleep20-21swapper/207:08:332
1118427652,7sleep20-21swapper/207:08:332
1582552740,0pltrace0-21swapper/009:14:370
2449352710,0pltrace0-21swapper/710:29:387
1098427146,7sleep70-21swapper/707:05:427
1098427146,7sleep70-21swapper/707:05:427
1535452700,0pltrace0-21swapper/308:14:373
2902552680,0pltrace0-21swapper/208:39:372
136512680,0sleep20-21swapper/208:10:172
578252640,0pltrace0-21swapper/710:54:387
1104626352,7sleep40-21swapper/407:06:354
1104626352,7sleep40-21swapper/407:06:354
5232620,0sleep60-21swapper/608:45:136
1355252600,0pltrace0-21swapper/410:09:384
1675652210,1pltrace16760-21tail11:14:386
578252200,1pltrace0-21swapper/110:55:241
2129652180,1pltrace21301-21pltrace-run09:24:372
1809052180,1pltrace0-21swapper/208:20:242
1675652180,1pltrace0-21swapper/211:15:212
2996152170,1pltrace32305-21unixbench_multi10:40:486
2583052170,5pltrace0-21swapper/207:35:182
250022170,0sleep00-21swapper/008:30:170
1448652170,1pltrace0-21swapper/612:10:206
1448652170,1pltrace0-21swapper/212:10:292
758152160,1pltrace0-21swapper/309:04:053
578252160,10pltrace0-21swapper/010:55:160
531652160,0pltrace0-21swapper/009:55:380
484752160,2pltrace111rcu_preempt08:58:416
38152160,0sleep50-21swapper/507:50:255
3270152160,6pltrace0-21swapper/010:46:280
3270152160,1pltrace0-21swapper/210:45:292
304452160,5pltrace0-21swapper/010:50:320
2996152160,5pltrace0-21swapper/210:40:482
2769452160,0pltrace0-21swapper/211:37:412
1675652160,1pltrace1111-21snmpd11:18:463
578252150,0pltrace0-21swapper/210:55:162
484752150,6pltrace0-21swapper/008:57:550
3270152150,5pltrace0-21swapper/310:45:373
3270152150,5pltrace0-21swapper/110:45:461
3223652150,0pltrace0-21swapper/009:47:380
3130052150,5pltrace0-21swapper/607:48:516
3130052150,5pltrace0-21swapper/107:46:141
304452150,0pltrace0-21swapper/210:53:532
2856152150,5pltrace0-21swapper/607:41:076
2769452150,0pltrace0-21swapper/011:38:340
2583052150,6pltrace0-21swapper/007:35:240
2082552150,5pltrace0-21swapper/308:27:283
2036052150,5pltrace0-21swapper/007:28:310
2036052150,1pltrace0-21swapper/207:28:372
1809052150,0pltrace0-21swapper/008:19:400
1401552150,1pltrace0-21swapper/211:13:172
1127852150,0pltrace0-21swapper/207:13:352
1033452150,0pltrace0-21swapper/609:05:166
987052140,5pltrace0-21swapper/008:06:070
758152140,4pltrace0-21swapper/109:04:321
711652140,4pltrace0-21swapper/608:01:216
484752140,0pltrace0-21swapper/208:57:482
3130052140,0pltrace0-21swapper/207:48:462
2996152140,5pltrace0-21swapper/010:41:400
2856152140,0pltrace0-21swapper/207:43:352
2309452140,0pltrace111rcu_preempt07:32:156
2036052140,4pltrace0-21swapper/307:28:433
1675652140,5pltrace0-21swapper/011:17:160
1675652140,4pltrace0-21swapper/611:15:056
163252140,1pltrace0-21swapper/207:53:302
1535452140,4pltrace0-21swapper/208:19:332
1448652140,4pltrace0-21swapper/612:09:546
1448652140,4pltrace0-21swapper/012:10:210
1174952140,8pltrace11787-21latency_hist12:05:012
1158699141,1cyclictest0-21swapper/608:10:246
1158699141,1cyclictest0-21swapper/608:05:296
1158199144,5cyclictest6813-21swap08:55:265
1156499141,1cyclictest0-21swapper/211:47:532
1127852140,3pltrace0-21swapper/607:13:296
1033452140,6pltrace0-21swapper/009:04:410
1033452140,5pltrace0-21swapper/209:05:082
987052130,1pltrace0-21swapper/208:06:362
711652130,0pltrace0-21swapper/208:01:332
484752130,0pltrace0-21swapper/308:58:033
3223652130,4pltrace0-21swapper/209:47:312
304452130,1pltrace1111-21snmpd10:53:281
2996152130,4pltrace0-21swapper/610:39:576
2996152130,3pltrace0-21swapper/310:42:393
2769452130,3pltrace0-21swapper/111:36:391
2676552130,4pltrace0-21swapper/609:38:336
2583052130,4pltrace0-21swapper/307:38:203
2583052130,0pltrace0-21swapper/107:35:071
2355652130,5pltrace0-21swapper/208:32:432
2082552130,0pltrace0-21swapper/208:28:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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