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2023-01-27 - 14:49

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

Latency plot of system in rack #d, slot #2
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, Linux 4.9.20-rt16, x86_64 highest latencies:
System rackdslot2.osadl.org (updated Fri Jan 27, 2023 00:46:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2133021660,6sleep1938299cyclictest00:10:211
133891154131,10phc2sys0-21swapper/319:07:053
87922129108,9sleep10-21swapper/119:06:081
88772877,17sleep00-21swapper/019:07:080
88542859,19sleep20-21swapper/219:06:592
9384997356,10cyclictest41-21ksoftirqd/323:30:143
9383996930,11cyclictest33-21ksoftirqd/219:30:272
9383996729,4cyclictest33-21ksoftirqd/223:35:212
185082670,6sleep0938199cyclictest21:45:280
9384996653,7cyclictest41-21ksoftirqd/322:55:203
9384996653,7cyclictest41-21ksoftirqd/322:55:203
9383996525,10cyclictest33-21ksoftirqd/222:30:342
65842650,4sleep1231rcuc/121:20:311
133991650,2ptp4l401ktimersoftd/320:35:053
9383996424,10cyclictest33-21ksoftirqd/223:25:282
9383996423,11cyclictest33-21ksoftirqd/223:30:142
9383996419,9cyclictest33-21ksoftirqd/221:45:162
938399635,6cyclictest33-21ksoftirqd/200:10:302
9383996230,4cyclictest33-21ksoftirqd/221:04:592
9383996128,10cyclictest33-21ksoftirqd/222:05:142
9383996127,9cyclictest33-21ksoftirqd/223:15:182
9383996026,9cyclictest33-21ksoftirqd/221:55:152
9383995925,9cyclictest33-21ksoftirqd/223:20:312
9383995919,11cyclictest33-21ksoftirqd/221:25:282
938399576,10cyclictest33-21ksoftirqd/220:05:132
938399576,10cyclictest33-21ksoftirqd/220:05:132
938399566,9cyclictest33-21ksoftirqd/223:15:012
938399564,9cyclictest33-21ksoftirqd/200:35:172
9383995642,3cyclictest33-21ksoftirqd/219:30:012
9383995626,5cyclictest33-21ksoftirqd/220:35:012
9383995623,9cyclictest33-21ksoftirqd/220:45:182
149052560,2sleep30-21swapper/319:20:213
938399557,10cyclictest33-21ksoftirqd/222:10:142
938399555,9cyclictest33-21ksoftirqd/220:15:152
9383995543,4cyclictest33-21ksoftirqd/200:30:322
938399553,9cyclictest33-21ksoftirqd/221:35:162
9383995522,4cyclictest33-21ksoftirqd/221:10:302
9383995517,10cyclictest33-21ksoftirqd/219:35:202
938399546,8cyclictest33-21ksoftirqd/219:25:012
938399545,7cyclictest33-21ksoftirqd/220:15:012
938399543,9cyclictest33-21ksoftirqd/219:50:352
938399543,7cyclictest33-21ksoftirqd/222:55:352
938399543,7cyclictest33-21ksoftirqd/222:55:352
938399543,10cyclictest33-21ksoftirqd/221:10:002
938399542,9cyclictest33-21ksoftirqd/220:40:352
9383995425,6cyclictest33-21ksoftirqd/200:25:172
938399542,10cyclictest33-21ksoftirqd/221:20:222
938399537,9cyclictest33-21ksoftirqd/200:20:012
938399534,8cyclictest33-21ksoftirqd/219:15:332
938399533,9cyclictest33-21ksoftirqd/223:55:212
938399533,7cyclictest33-21ksoftirqd/219:45:282
9383995328,5cyclictest33-21ksoftirqd/200:20:022
938399532,7cyclictest33-21ksoftirqd/220:50:152
938399530,7cyclictest321ktimersoftd/221:45:002
938399528,3cyclictest121rcu_preempt22:20:362
938399525,8cyclictest33-21ksoftirqd/222:40:262
938399525,6cyclictest33-21ksoftirqd/221:50:212
938399524,7cyclictest33-21ksoftirqd/223:50:162
938399523,9cyclictest33-21ksoftirqd/200:05:012
938399523,6cyclictest25519-21processes22:00:252
9383995219,10cyclictest33-21ksoftirqd/222:45:302
938399520,14cyclictest33-21ksoftirqd/219:40:262
9384995139,7cyclictest41-21ksoftirqd/320:50:123
938399516,6cyclictest33-21ksoftirqd/222:35:122
938399514,6cyclictest33-21ksoftirqd/220:20:132
9383995140,3cyclictest33-21ksoftirqd/222:15:152
9383995139,4cyclictest33-21ksoftirqd/223:05:232
9383995137,4cyclictest33-21ksoftirqd/220:30:192
938399513,6cyclictest33-21ksoftirqd/222:25:322
938399513,6cyclictest11487-21cron19:15:002
938399512,7cyclictest33-21ksoftirqd/200:05:262
938399510,9cyclictest33-21ksoftirqd/221:30:302
938399510,9cyclictest33-21ksoftirqd/221:30:302
9384995015,10cyclictest41-21ksoftirqd/322:25:333
938399503,7cyclictest33-21ksoftirqd/223:40:312
938399502,6cyclictest33-21ksoftirqd/219:55:302
938399501,9cyclictest33-21ksoftirqd/223:00:192
938399501,9cyclictest33-21ksoftirqd/221:15:192
9383994934,3cyclictest33-21ksoftirqd/223:45:232
938399492,7cyclictest33-21ksoftirqd/220:25:252
938399490,6cyclictest33-21ksoftirqd/220:00:252
9381994942,4cyclictest9-21ksoftirqd/020:40:160
938399486,8cyclictest33-21ksoftirqd/220:55:342
9383994829,9cyclictest33-21ksoftirqd/222:50:302
9384994737,6cyclictest41-21ksoftirqd/320:10:123
55498470,5rtkit-daemon32298-21df23:25:161
938499460,3cyclictest121rcu_preempt20:00:313
9384994532,4cyclictest41-21ksoftirqd/300:00:173
9384994531,7cyclictest41-21ksoftirqd/321:00:183
938499450,5cyclictest41-21ksoftirqd/321:55:223
133991450,1ptp4l401ktimersoftd/323:22:103
9384994432,10cyclictest41-21ksoftirqd/319:55:293
133991440,1ptp4l401ktimersoftd/320:19:553
938499437,3cyclictest41-21ksoftirqd/321:20:383
938499434,3cyclictest121rcu_preempt00:21:573
9384994337,4cyclictest41-21ksoftirqd/322:35:263
9384994337,4cyclictest41-21ksoftirqd/319:30:013
9384994336,4cyclictest41-21ksoftirqd/323:00:143
9384994336,4cyclictest41-21ksoftirqd/322:20:013
9384994336,4cyclictest41-21ksoftirqd/321:10:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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