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2025-12-09 - 06:25
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackbslot7.osadl.org (updated Tue Dec 09, 2025 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3999991313,34cyclictest11084-21apt-get22:58:342
3999991313,34cyclictest11084-21apt-get22:58:342
297121309,91sleep22496-21/usr/sbin/munin19:03:502
3285212110,79sleep13374-21/usr/sbin/munin19:04:021
288721097,79sleep00-21swapper/019:03:480
83121060,10sleep2371rcuc/220:34:552
83121060,10sleep2371rcuc/220:34:552
3992991022,71cyclictest2505-21ssh22:43:320
39999910156,38cyclictest355-21runrttasks21:48:332
39999910156,38cyclictest355-21runrttasks21:48:332
3999991013,29cyclictest19153-21ssh22:16:552
399299976,79cyclictest23669-21ssh23:18:500
399299952,83cyclictest26141-21grep22:28:540
399999942,77cyclictest21063-21kworker/u19:2+rpciod23:23:362
399799948,62cyclictest311-21apt-get23:33:351
3992999465,20cyclictest20606-21apt-key19:58:190
3992999465,20cyclictest20606-21apt-key19:58:190
3992999463,22cyclictest691-21cron21:03:160
3999999377,9cyclictest0-21swapper/223:58:202
399799934,36cyclictest29053-21/usr/sbin/munin20:23:391
399799933,41cyclictest31727-21apt-get00:28:261
399799933,32cyclictest21029-21proc_pri23:13:501
3997999331,10cyclictest0-21swapper/122:49:471
3992999312,48cyclictest15-21ksoftirqd/000:16:380
3997999236,51cyclictest413-21kworker/u17:2+events_unbound19:18:161
3997999228,13cyclictest0-21swapper/123:19:121
3997999226,12cyclictest0-21swapper/122:43:201
3997999218,32cyclictest10578-21cat21:03:521
399299923,75cyclictest23581-21chrt21:29:160
399799913,42cyclictest3396-21mailstats22:44:211
399799913,35cyclictest20632-21latency_hist19:58:181
399799913,35cyclictest20632-21latency_hist19:58:181
3997999131,11cyclictest0-21swapper/119:38:501
399299916,66cyclictest21063-21kworker/u19:2+ext4-rsv-conversion23:24:020
399299913,79cyclictest5607-21apt-get22:48:360
3992999113,49cyclictest15-21ksoftirqd/019:10:510
3992999113,49cyclictest15-21ksoftirqd/019:10:510
3999999046,36cyclictest0-21swapper/220:13:162
399799903,36cyclictest31157-21sshd22:37:241
399799903,33cyclictest7431-21grep20:53:561
399799903,30cyclictest21096-21timerandwakeup21:23:521
3992999019,43cyclictest15-21ksoftirqd/019:50:550
399999892,41cyclictest28786-21latency_hist21:38:182
399999892,23cyclictest304692sh22:35:222
399799894,30cyclictest26468-21/usr/sbin/munin00:18:401
399799894,30cyclictest26468-21/usr/sbin/munin00:18:401
399799893,39cyclictest17557-21ssh00:03:161
399799893,39cyclictest12728-21sort19:33:331
399799893,36cyclictest20957-21fschecks_count00:08:391
399799893,36cyclictest20957-21fschecks_count00:08:391
3997998933,48cyclictest0-21swapper/121:53:501
3997998932,7cyclictest0-21swapper/121:42:531
3997998931,49cyclictest0-21swapper/122:38:431
399799892,34cyclictest23721-21switchtime22:23:521
3997998921,12cyclictest0-21swapper/100:38:161
399999883,41cyclictest7278-21ssh23:43:542
399799883,37cyclictest16731-21latency_hist22:13:191
399799883,33cyclictest2608-21grep20:38:521
399799883,33cyclictest2608-21grep20:38:521
399799882,35cyclictest9334-21sort22:53:531
399299884,60cyclictest14594-21latency_hist23:58:190
399999873,74cyclictest23461-21ssh21:28:532
399799874,35cyclictest9074-21grep20:58:541
399799874,33cyclictest14471-21cstates21:13:351
399799873,37cyclictest17327-21fschecks_time22:13:391
399799873,35cyclictest23374-21timerandwakeup20:03:531
399799873,30cyclictest14999-21ssh23:03:431
399799873,27cyclictest12147-21grep22:03:521
3997998727,12cyclictest0-21swapper/122:59:071
3997998727,12cyclictest0-21swapper/122:59:071
399799872,34cyclictest355-21runrttasks23:08:451
399799872,34cyclictest18239-21grep19:48:501
399299876,50cyclictest15-21ksoftirqd/000:23:510
399299876,50cyclictest15-21ksoftirqd/000:23:510
399299873,50cyclictest15-21ksoftirqd/023:38:190
3992998716,34cyclictest15-21ksoftirqd/019:47:230
3999998644,35cyclictest0-21swapper/219:38:542
399999863,36cyclictest22280-21runrttasks22:22:292
399999863,35cyclictest3537-21/usr/sbin/munin00:33:522
399999863,34cyclictest2093-21sort20:38:412
399999863,34cyclictest2093-21sort20:38:412
399999862,40cyclictest22876-21ssh22:23:282
399999862,33cyclictest10569-21seq19:25:332
399999862,32cyclictest6386-21sed21:53:522
399799864,29cyclictest20237-21fschecks_time22:18:381
399799863,35cyclictest32502-21/usr/sbin/munin20:34:431
399799863,35cyclictest32502-21/usr/sbin/munin20:34:431
3997998628,12cyclictest0-21swapper/100:23:341
3997998628,12cyclictest0-21swapper/100:23:341
399799862,35cyclictest20624-21latency_hist00:08:191
399299867,71cyclictest11802-21rm22:58:540
399299867,71cyclictest11802-21rm22:58:540
3992998663,18cyclictest17367-21kworker/u19:2+events_unbound21:48:160
399999855,36cyclictest20041-21modprobe23:13:152
399999854,9cyclictest2476-21apt-get22:43:582
399999853,75cyclictest12128-21sed22:03:512
399999853,39cyclictest26554-21cpu00:18:322
399999853,39cyclictest26554-21cpu00:18:322
399999853,36cyclictest6900-21/usr/sbin/munin19:13:532
399999853,36cyclictest11127-21diskmemload23:33:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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