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2022-12-05 - 06:30

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 Mon Dec 05, 2022 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1467521620,6pltrace1816799cyclictest23:36:041
19588521400,6pltrace1816799cyclictest20:34:431
19588521400,6pltrace1816799cyclictest20:34:431
2948621180,0sleep60-21swapper/623:33:216
22271521050,0pltrace0-21swapper/623:00:246
2391152990,7pltrace0-21swapper/519:56:015
2422652930,0pltrace0-21swapper/221:44:012
1036152870,3pltrace0-21swapper/621:59:106
2914552860,0pltrace0-21swapper/521:47:235
1599352850,0pltrace0-21swapper/221:36:172
2442552840,0pltrace0-21swapper/522:35:305
3187552820,0pltrace0-21swapper/122:42:141
2391752810,0pltrace0-21swapper/420:40:064
1720352810,0pltrace0-21swapper/221:10:432
1106452810,0pltrace0-21swapper/100:10:441
1083052790,0pltrace0-21swapper/021:32:350
3090652780,0pltrace0-21swapper/420:48:504
2843752780,10pltrace1817299cyclictest22:13:382
1899852780,0pltrace0-21swapper/222:31:282
1782927863,11sleep60-21swapper/619:09:336
2476952770,0pltrace0-21swapper/419:59:034
951852760,0pltrace0-21swapper/722:50:187
3071852760,0pltrace0-21swapper/123:07:481
273452760,0pltrace0-21swapper/123:10:301
1779627660,12sleep40-21swapper/419:09:234
1706027660,12sleep10-21swapper/119:06:481
1674552760,6pltrace1816099cyclictest21:37:170
163752760,7pltrace1817799cyclictest21:50:453
795952750,0pltrace0-21swapper/000:36:380
772852750,0pltrace0-21swapper/500:36:185
3108952750,7pltrace1816099cyclictest00:29:540
2768352750,0pltrace0-21swapper/220:00:442
1697227550,12sleep30-21swapper/319:06:333
934752720,0pltrace0-21swapper/021:57:490
2243952720,0pltrace0-21swapper/400:20:294
295662710,0sleep40-21swapper/421:20:444
1760627145,12sleep70-21swapper/719:08:457
1674627145,12sleep20-21swapper/219:05:442
1670627146,12sleep50-21swapper/519:05:395
1020852710,1pltrace10211-21pltrace-run23:44:295
2570352690,0pltrace0-21swapper/421:18:474
2314952690,0pltrace0-21swapper/721:15:267
2306152690,0pltrace0-21swapper/223:28:002
127882690,0sleep40-21swapper/423:20:144
175552680,0pltrace0-21swapper/200:30:552
1097952680,0pltrace0-21swapper/720:21:357
1097952680,0pltrace0-21swapper/720:21:357
3242952670,0pltrace0-21swapper/420:08:484
3242952670,0pltrace0-21swapper/420:08:484
2233552670,0pltrace0-21swapper/123:54:141
1773126750,12sleep00-21swapper/019:09:100
1536552670,0pltrace0-21swapper/722:29:477
787352660,0pltrace0-21swapper/020:19:140
1873752660,0pltrace0-21swapper/422:31:084
1813452660,1pltrace18135-21sed23:24:380
1108352660,0pltrace0-21swapper/521:32:555
1061552660,0pltrace0-21swapper/121:59:301
305152640,1sleep730508-21ssh00:00:147
141452640,0pltrace0-21swapper/520:50:315
377152620,0pltrace0-21swapper/523:39:075
94172610,0sleep40-21swapper/423:16:134
276952600,1pltrace25-21ksoftirqd/200:05:002
2048952590,1pltrace1817799cyclictest22:06:143
1925252570,1pltrace19253-21sed22:31:480
861452550,6pltrace1818499cyclictest19:36:304
892052480,0pltrace55-21ksoftirqd/722:24:247
52382300,0sleep30-21swapper/322:20:213
550352260,1pltrace1563-21pltrace-run00:06:010
526052260,1pltrace5264-21pltrace-run00:05:414
98652220,1pltrace989-21pltrace-run00:02:593
1907252200,1pltrace19074-21pltrace-run22:58:435
1816799190,18cyclictest24369-21ssh21:16:591
322622180,0sleep40-21swapper/400:30:164
3214552180,1pltrace0-21swapper/121:24:101
136762180,1sleep20-21swapper/219:45:002
2350952170,8pltrace1817299cyclictest23:01:252
1816799170,13cyclictest0-21swapper/100:04:051
1816099170,15cyclictest23680-21cpuspeed_turbos23:55:130
1334752170,0pltrace0-21swapper/519:44:355
793352160,6pltrace1816099cyclictest23:41:270
63482160,1sleep30-21swapper/322:48:083
60012160,0sleep40-21swapper/420:58:014
3205752160,1pltrace1563-21pltrace-run00:00:580
302622160,0sleep70-21swapper/721:48:517
1816799160,15cyclictest0-21swapper/123:57:261
1816799160,15cyclictest0-21swapper/122:49:561
1494252160,6pltrace1818499cyclictest20:26:584
1494252160,6pltrace1818499cyclictest20:26:584
18200991513,1cyclictest0-21swapper/623:14:596
18200991513,1cyclictest0-21swapper/600:17:006
18200991512,2cyclictest1135-21snmpd00:34:006
1820099150,14cyclictest0-21swapper/623:19:216
1820099150,14cyclictest0-21swapper/621:22:376
1818499150,14cyclictest0-21swapper/421:32:024
1817299150,14cyclictest0-21swapper/200:15:002
18167991512,2cyclictest0-21swapper/100:30:181
18160991513,1cyclictest0-21swapper/022:50:170
1816099151,13cyclictest0-21swapper/021:25:210
1816099150,1cyclictest0-21swapper/019:20:240
1145852150,0pltrace43-21ksoftirqd/520:23:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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