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2026-01-12 - 12:48
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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 rackeslot8.osadl.org (updated Mon Jan 12, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
564179992623,1cyclictest0-21swapper/319:50:163
564179992318,2cyclictest7079982sleep320:55:253
56417999231,15cyclictest701996-21taskset20:55:013
564179992219,1cyclictest0-21swapper/320:25:003
564179991916,1cyclictest0-21swapper/319:25:013
56417999191,14cyclictest888322-21taskset23:20:123
9387812180,8sleep014-21ksoftirqd/023:55:190
564179991815,1cyclictest0-21swapper/322:10:003
564179991815,1cyclictest0-21swapper/321:00:143
564179991815,1cyclictest0-21swapper/319:10:163
56417999181,13cyclictest870627-21taskset23:05:173
56417999181,13cyclictest727712-21taskset21:15:003
56417999181,13cyclictest676435-21taskset20:35:133
56417999181,12cyclictest939752-21taskset23:59:553
56417999181,12cyclictest727987-21chrt21:15:133
564179991714,1cyclictest0-21swapper/322:55:143
564179991714,1cyclictest0-21swapper/322:25:003
564179991714,1cyclictest0-21swapper/319:55:143
564179991714,1cyclictest0-21swapper/300:20:193
564179991713,2cyclictest0-21swapper/321:35:013
56417999171,13cyclictest952349-21chrt00:06:523
56417999171,12cyclictest913616-21turbostat23:40:013
56417999171,12cyclictest894703-21taskset23:25:133
56417999171,12cyclictest830407-21chrt22:35:073
56417999171,12cyclictest830407-21chrt22:35:073
56417999170,13cyclictest920011-21chrt23:44:563
56417999170,12cyclictest804574-21taskset22:14:563
56417999168,5cyclictest759786-21sleep21:44:553
564179991613,1cyclictest0-21swapper/321:45:193
56417999161,12cyclictest977201-21chrt00:25:203
56417999161,12cyclictest945091-21chrt00:00:193
56417999161,12cyclictest855472-21chrt22:51:553
56417999161,12cyclictest787015-21taskset22:00:173
56417999161,12cyclictest720886-21chrt21:05:473
56417999161,12cyclictest682783-21taskset20:40:023
56417999161,12cyclictest676108-21taskset20:34:383
56417999161,12cyclictest676108-21taskset20:34:373
56417999161,12cyclictest656242-21chrt20:15:253
56417999161,12cyclictest644531-21taskset20:10:163
56417999161,12cyclictest643607-21chrt20:07:163
56417999161,12cyclictest635918-21taskset20:00:183
56417999161,11cyclictest990637-21taskset00:35:343
56417999161,11cyclictest839036-21taskset22:40:163
56417999160,13cyclictest618075-21chrt19:48:483
56417999160,12cyclictest778977-21taskset21:55:003
56417999160,12cyclictest605147-21sleep19:40:003
564179991512,1cyclictest0-21swapper/323:30:243
564179991512,1cyclictest0-21swapper/323:00:143
564179991512,1cyclictest0-21swapper/322:30:173
564179991512,1cyclictest0-21swapper/321:55:173
564179991512,1cyclictest0-21swapper/300:15:173
56417999151,11cyclictest933057-21taskset23:51:333
56417999151,11cyclictest926330-21taskset23:45:253
56417999151,11cyclictest881284-21taskset23:10:383
56417999151,11cyclictest843200-21taskset22:45:013
56417999151,11cyclictest746564-21chrt21:25:433
56417999151,11cyclictest694941-21taskset20:45:273
56417999151,11cyclictest669161-21chrt20:25:593
56417999151,11cyclictest611613-21taskset19:43:043
56417999151,11cyclictest598379-21taskset19:31:133
56417999151,11cyclictest592071-21chrt19:27:043
56417999151,10cyclictest952841-21taskset00:10:053
56417999150,12cyclictest978449-21chrt00:30:023
56417999150,12cyclictest887692-21taskset23:15:593
56417999150,12cyclictest819204-21taskset22:25:173
56417999150,12cyclictest810684-21chrt22:16:403
56417999150,12cyclictest578800-21chrt19:15:423
56417999150,11cyclictest734351-21taskset21:20:093
56417999141,10cyclictest754986-21chrt21:35:163
307598140,2rtkit-daemon217-21plymouthd19:30:161
307598140,2rtkit-daemon0-21swapper/121:42:321
9256482130,5sleep1925787-21netstat23:45:191
7937422130,2sleep1321rcuc/122:05:161
6502202130,9sleep1650273-21cat20:15:001
9589972125,4sleep0959042-21systemd-run00:15:000
7476002121,8sleep2748317-21sed21:30:152
6851592121,2sleep00-21swapper/020:40:200
5637272120,1sleep30-21swapper/319:06:133
307598120,7rtkit-daemon3256-21sendmail-mta19:56:091
8690352112,5sleep1869068-21apt-get23:05:121
8173722111,7sleep1817388-21latency_hist22:25:001
7343542111,3sleep1734387-21apt-get21:20:121
6914182110,8sleep00-21swapper/020:45:180
6647102111,8sleep1666145-21grep20:25:181
307598110,5rtkit-daemon475-21wpa_supplicant00:33:110
307598110,4rtkit-daemon475-21wpa_supplicant23:11:471
307598110,1rtkit-daemon0-21swapper/123:56:311
9397562101,6sleep2939759-40updatedb.mlocat23:59:592
9271922100,2sleep20-21swapper/223:50:012
9007882100,6sleep11-21systemd23:30:011
8572552101,6sleep2858279-21cut22:55:152
8164742100,3sleep2816530-21ntp_states22:20:202
6945682100,7sleep1694679-21awk20:45:221
5629212103,1sleep1171rcu_preempt19:05:191
307598100,6rtkit-daemon716-21ntpd21:05:041
307598100,6rtkit-daemon3256-21sendmail-mta00:27:590
307598100,1rtkit-daemon0-21swapper/121:00:141
946642291,5sleep0946824-21cut00:05:140
895071291,5sleep2895622-21ps23:25:182
894409290,6sleep2894455-21munin-run23:25:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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