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2022-05-26 - 20:20

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

Latency plot of system in rack #d, slot #4
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 rackdslot4.osadl.org (updated Mon Mar 07, 2022 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1487628813,19sleep10-21swapper/107:06:031
124932790,8sleep01547199cyclictest07:45:140
151322754,59sleep30-21swapper/307:09:203
268362740,7sleep31547499cyclictest12:00:143
151732737,10sleep20-21swapper/207:09:512
222472690,4sleep233-21ksoftirqd/211:55:122
297172660,8sleep11547299cyclictest10:45:091
138662650,4sleep125-21ksoftirqd/110:25:131
15474996453,6cyclictest41-21ksoftirqd/307:15:213
15474996051,5cyclictest41-21ksoftirqd/309:40:183
294472570,2sleep30-21swapper/310:45:073
15473995612,5cyclictest33-21ksoftirqd/207:15:202
220232540,2sleep20-21swapper/209:55:162
204692540,2sleep30-21swapper/311:50:393
15473995443,5cyclictest33-21ksoftirqd/210:50:192
56598530,13rtkit-daemon0-21swapper/107:22:431
15474995343,4cyclictest41-21ksoftirqd/308:35:143
15473995338,4cyclictest33-21ksoftirqd/207:45:172
15473995324,4cyclictest33-21ksoftirqd/207:55:172
15474995242,5cyclictest41-21ksoftirqd/307:25:173
15474995242,5cyclictest41-21ksoftirqd/307:25:173
15472995238,11cyclictest801-21cron11:30:001
15472995238,11cyclictest801-21cron11:29:591
178402510,2sleep10-21swapper/111:50:091
56598490,10rtkit-daemon0-21swapper/107:37:281
301242490,2sleep230126-21cat07:25:252
301242490,2sleep230126-21cat07:25:242
15474994932,4cyclictest41-21ksoftirqd/307:55:133
15474994927,4cyclictest41-21ksoftirqd/307:45:113
15473994942,3cyclictest33-21ksoftirqd/208:35:172
15473994919,6cyclictest33-21ksoftirqd/212:00:172
264182480,2sleep20-21swapper/210:40:152
15474994831,4cyclictest41-21ksoftirqd/310:30:183
1547399484,4cyclictest121rcu_preempt12:10:112
15471994841,4cyclictest9-21ksoftirqd/008:00:170
1547499470,10cyclictest41-21ksoftirqd/310:35:183
15473994737,4cyclictest33-21ksoftirqd/209:35:192
15474994640,3cyclictest41-21ksoftirqd/308:05:183
15474994637,5cyclictest41-21ksoftirqd/309:35:183
15474994631,4cyclictest41-21ksoftirqd/308:20:403
15474994627,5cyclictest41-21ksoftirqd/308:25:123
15474994626,7cyclictest41-21ksoftirqd/309:00:113
1547399467,7cyclictest33-21ksoftirqd/208:15:012
1547399466,8cyclictest33-21ksoftirqd/208:10:552
1547399466,5cyclictest33-21ksoftirqd/208:00:072
15473994628,4cyclictest33-21ksoftirqd/211:30:292
15473994619,3cyclictest33-21ksoftirqd/209:00:192
1547399461,11cyclictest33-21ksoftirqd/208:55:172
15474994538,4cyclictest41-21ksoftirqd/307:35:173
15474994537,4cyclictest41-21ksoftirqd/311:15:153
15474994530,4cyclictest41-21ksoftirqd/311:10:093
15474994528,4cyclictest41-21ksoftirqd/310:40:133
1547499450,11cyclictest41-21ksoftirqd/311:20:073
1547499450,11cyclictest41-21ksoftirqd/311:20:073
1547499450,11cyclictest41-21ksoftirqd/307:30:193
15473994538,4cyclictest33-21ksoftirqd/207:35:172
15473994537,4cyclictest33-21ksoftirqd/207:50:052
15473994530,4cyclictest33-21ksoftirqd/208:05:162
15473994530,4cyclictest33-21ksoftirqd/207:10:142
1499424516,17sleep00-21swapper/007:07:310
1547499444,7cyclictest121rcu_preempt09:17:443
1547499444,4cyclictest121rcu_preempt09:10:183
15474994433,5cyclictest41-21ksoftirqd/310:15:203
15474994429,4cyclictest41-21ksoftirqd/308:10:163
15474994427,4cyclictest41-21ksoftirqd/309:30:363
1547399446,4cyclictest121rcu_preempt10:35:372
15473994433,6cyclictest33-21ksoftirqd/211:40:142
15473994427,4cyclictest33-21ksoftirqd/209:20:152
15473994425,5cyclictest33-21ksoftirqd/208:45:142
15473994425,5cyclictest33-21ksoftirqd/208:45:132
58462430,2sleep20-21swapper/210:55:132
15474994337,3cyclictest41-21ksoftirqd/309:25:203
15474994335,4cyclictest41-21ksoftirqd/308:00:153
15474994328,4cyclictest41-21ksoftirqd/310:00:073
15474994328,4cyclictest41-21ksoftirqd/310:00:073
15474994323,16cyclictest41-21ksoftirqd/310:25:123
1547499431,4cyclictest121rcu_preempt10:05:073
1547499430,3cyclictest41-21ksoftirqd/312:05:173
15473994334,5cyclictest33-21ksoftirqd/210:05:162
15473994333,5cyclictest33-21ksoftirqd/207:40:152
15473994322,8cyclictest33-21ksoftirqd/210:45:092
15473994311,5cyclictest33-21ksoftirqd/211:45:422
1547399430,4cyclictest33-21ksoftirqd/208:50:182
114391430,7getstats1547499cyclictest08:43:413
56598420,2rtkit-daemon0-21swapper/111:15:241
1547499424,10cyclictest41-21ksoftirqd/309:05:173
15474994235,4cyclictest41-21ksoftirqd/307:10:183
15474994232,4cyclictest41-21ksoftirqd/311:35:143
15474994224,4cyclictest41-21ksoftirqd/308:55:093
15473994233,5cyclictest33-21ksoftirqd/209:30:042
15473994225,4cyclictest33-21ksoftirqd/211:35:132
1547399421,5cyclictest33-21ksoftirqd/209:45:172
1547499415,4cyclictest121rcu_preempt08:50:213
15474994135,4cyclictest41-21ksoftirqd/307:50:143
15474994132,5cyclictest41-21ksoftirqd/312:25:143
15474994127,5cyclictest41-21ksoftirqd/308:20:003
15474994126,4cyclictest41-21ksoftirqd/311:45:473
15474994123,5cyclictest41-21ksoftirqd/312:20:113
1547399418,5cyclictest33-21ksoftirqd/209:05:192
15473994134,4cyclictest33-21ksoftirqd/212:35:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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