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2021-06-17 - 20:02

Intel(R) Atom(TM) CPU E3845 @ 1.91GHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #1
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 rackdslot1.osadl.org (updated Thu Jun 10, 2021 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1146911680,49ptp4l0-21swapper/107:05:291
1146911610,14ptp4l0-21swapper/007:05:520
1146911480,14ptp4l0-21swapper/207:07:452
1146911470,15ptp4l0-21swapper/307:06:463
2784998025,10cyclictest33-21ksoftirqd/208:05:312
2785997864,7cyclictest41-21ksoftirqd/311:35:153
246752780,7sleep0277899cyclictest09:35:120
2784997630,8cyclictest33-21ksoftirqd/212:30:302
2778997511,19cyclictest25332-21df_abs11:35:170
114691730,2ptp4l0-21swapper/107:40:161
2785997160,5cyclictest41-21ksoftirqd/307:35:243
114691710,12ptp4l0-21swapper/110:50:021
2785997060,5cyclictest41-21ksoftirqd/310:00:113
2785997058,6cyclictest41-21ksoftirqd/307:25:143
2784997026,10cyclictest33-21ksoftirqd/207:45:182
2784997025,11cyclictest33-21ksoftirqd/209:55:172
2778997010,13cyclictest4296-21if_enp1s007:10:120
2785996959,5cyclictest41-21ksoftirqd/312:25:143
278499696,10cyclictest33-21ksoftirqd/207:50:122
277899699,8cyclictest114791getstats09:20:360
277899688,13cyclictest32445-21expr07:45:120
114691670,2ptp4l0-21swapper/108:28:521
2785996653,6cyclictest41-21ksoftirqd/311:45:173
278599663,5cyclictest121rcu_preempt11:30:143
278599663,5cyclictest121rcu_preempt11:30:133
277899667,13cyclictest14924-21/usr/sbin/munin12:05:100
114691660,6ptp4l7386-21/usr/sbin/munin07:15:043
2785996553,6cyclictest41-21ksoftirqd/310:15:163
2785996553,5cyclictest41-21ksoftirqd/309:30:163
278499655,9cyclictest33-21ksoftirqd/209:25:122
278499653,7cyclictest33-21ksoftirqd/208:15:032
277899657,13cyclictest20936-21/usr/sbin/munin10:10:230
114691650,42ptp4l25-21ksoftirqd/108:00:281
278499647,9cyclictest33-21ksoftirqd/212:25:052
278499647,9cyclictest33-21ksoftirqd/209:00:072
278499647,9cyclictest33-21ksoftirqd/208:50:022
278499646,10cyclictest33-21ksoftirqd/210:40:052
313492630,2sleep30-21swapper/307:45:033
278499637,9cyclictest33-21ksoftirqd/209:30:092
278499636,9cyclictest33-21ksoftirqd/210:55:072
278499636,10cyclictest33-21ksoftirqd/211:35:122
278499635,9cyclictest33-21ksoftirqd/210:10:072
278499634,9cyclictest14900-21apt-get12:05:082
278499634,8cyclictest33-21ksoftirqd/211:04:592
277899637,12cyclictest7665-21fschecks_time09:55:050
114691630,2ptp4l0-21swapper/109:00:211
29322620,4sleep0101ktimersoftd/011:10:000
278499627,9cyclictest12492-21df09:20:112
278499625,8cyclictest33-21ksoftirqd/210:05:152
278499625,10cyclictest33-21ksoftirqd/211:05:362
278499624,7cyclictest33-21ksoftirqd/212:00:162
278499623,8cyclictest33-21ksoftirqd/212:10:142
277899626,13cyclictest21631-21missed_timers07:30:250
277899625,13cyclictest0-21swapper/010:05:050
114691620,2ptp4l0-21swapper/110:10:011
278499617,11cyclictest33-21ksoftirqd/209:35:072
278499616,9cyclictest33-21ksoftirqd/212:35:232
278499615,9cyclictest33-21ksoftirqd/208:40:052
278499615,8cyclictest33-21ksoftirqd/210:05:012
278499614,8cyclictest33-21ksoftirqd/212:15:152
278499614,8cyclictest33-21ksoftirqd/210:25:002
278499614,8cyclictest33-21ksoftirqd/209:05:122
278499614,8cyclictest33-21ksoftirqd/208:45:132
278499614,8cyclictest33-21ksoftirqd/208:30:252
278499614,8cyclictest33-21ksoftirqd/208:25:082
278499614,8cyclictest33-21ksoftirqd/208:10:312
278499614,7cyclictest12056-21apt-get08:00:122
278499613,8cyclictest33-21ksoftirqd/209:10:132
277899616,12cyclictest18499-21unixbench_singl08:45:340
277899616,12cyclictest1300-21cat11:45:260
238012610,4sleep1241ktimersoftd/112:15:051
114691610,2ptp4l0-21swapper/108:35:201
2785996049,6cyclictest41-21ksoftirqd/308:45:143
2785996048,7cyclictest41-21ksoftirqd/311:50:183
278499606,9cyclictest33-21ksoftirqd/211:50:012
278499604,11cyclictest33-21ksoftirqd/210:50:202
278499603,8cyclictest33-21ksoftirqd/210:45:322
278499603,7cyclictest33-21ksoftirqd/207:55:112
277899606,13cyclictest19180-21/usr/sbin/munin12:10:070
114691600,3ptp4l10452-21ls10:35:393
295502590,1sleep00-21swapper/012:20:300
2785995952,4cyclictest41-21ksoftirqd/307:10:133
2785995946,6cyclictest41-21ksoftirqd/309:20:193
278499596,9cyclictest33-21ksoftirqd/211:50:062
278499596,8cyclictest33-21ksoftirqd/211:15:232
278499595,9cyclictest33-21ksoftirqd/207:25:002
278499590,9cyclictest33-21ksoftirqd/210:15:272
278499590,55cyclictest321ktimersoftd/211:10:152
94202580,2sleep10-21swapper/111:55:221
278499586,8cyclictest27162-21apt-get12:20:042
278499585,9cyclictest33-21ksoftirqd/209:40:112
278499585,10cyclictest33-21ksoftirqd/209:50:262
278499584,8cyclictest33-21ksoftirqd/207:15:052
278499584,7cyclictest33-21ksoftirqd/211:55:022
278499584,7cyclictest33-21ksoftirqd/210:25:262
278499583,8cyclictest33-21ksoftirqd/210:30:192
278499583,8cyclictest33-21ksoftirqd/207:25:092
278499582,13cyclictest33-21ksoftirqd/211:40:112
278499581,7cyclictest33-21ksoftirqd/207:40:182
114691580,2ptp4l0-21swapper/107:34:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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