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2026-05-01 - 21:53
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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 Fri May 01, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
665221630,21sleep20-21swapper/206:59:532
6327215230,100sleep16416-21grep06:57:501
69629911137,21cyclictest4578-21modprobe12:22:030
3150621100,6sleep20-21swapper/210:24:062
69629910861,22cyclictest0-21swapper/010:32:190
69629910579,19cyclictest6976-21latency_hist07:02:080
69629910539,13cyclictest31695-21sh09:31:130
69629910341,12cyclictest24425-21latency10:12:290
69629910340,12cyclictest15011-21sendmail10:52:030
69629910340,12cyclictest15011-21sendmail10:52:030
69629910242,19cyclictest1642-21kworker/u17:1+nfsiod12:26:060
6983991003,46cyclictest0-21swapper/311:42:203
6962991007,25cyclictest29837-21date10:22:070
6966999845,46cyclictest0-21swapper/112:17:361
6966999776,13cyclictest19318-21latency_hist11:52:071
6966999748,42cyclictest0-21swapper/108:07:051
6966999746,43cyclictest0-21swapper/109:27:401
6966999746,42cyclictest0-21swapper/110:12:031
6966999743,47cyclictest18254-21unixbench_singl09:07:411
6977999643,45cyclictest0-21swapper/210:37:282
6977999643,45cyclictest0-21swapper/210:37:282
696299963,26cyclictest11786-21grep07:12:390
696299963,26cyclictest11786-21grep07:12:390
697799953,32cyclictest17191-21ssh09:07:162
6966999544,44cyclictest7293-21timerandwakeup10:37:381
6966999544,44cyclictest7293-21timerandwakeup10:37:381
6966999449,37cyclictest0-21swapper/111:03:591
6966999339,47cyclictest13294-21/usr/sbin/munin11:42:331
6966999337,9cyclictest0-21swapper/110:02:181
696299932,29cyclictest20146-21date09:12:080
698399925,43cyclictest0-21swapper/311:52:283
6977999239,45cyclictest0-21swapper/211:37:362
6966999241,43cyclictest0-21swapper/107:07:071
6966999233,9cyclictest0-21swapper/110:47:131
6966999233,9cyclictest0-21swapper/110:47:131
6977999147,37cyclictest0-21swapper/208:17:362
6977999136,47cyclictest0-21swapper/209:37:372
6977999125,8cyclictest0-21swapper/211:15:342
6977999125,8cyclictest0-21swapper/211:15:342
6966999135,8cyclictest0-21swapper/111:07:331
6966999132,8cyclictest0-21swapper/107:52:141
6977999043,38cyclictest0-21swapper/212:02:382
6977999040,42cyclictest28818-21sh09:26:372
6977999035,47cyclictest0-21swapper/208:37:362
6977999033,47cyclictest0-21swapper/211:27:072
6977999033,10cyclictest0-21swapper/210:32:372
6977999028,12cyclictest0-21swapper/209:32:362
6977999028,12cyclictest0-21swapper/209:32:362
6977999027,8cyclictest0-21swapper/209:52:282
6962999033,19cyclictest1634-21kworker/u17:1+nfsiod09:44:190
6962999031,21cyclictest10435-21kworker/u17:1+nfsiod11:22:020
698399892,49cyclictest0-21swapper/311:02:413
6977998944,38cyclictest0-21swapper/210:27:382
6977998944,38cyclictest0-21swapper/210:27:382
6977998943,39cyclictest0-21swapper/208:37:032
6977998942,40cyclictest297-21systemd-logind07:17:052
6977998942,40cyclictest297-21systemd-logind07:17:052
6977998933,8cyclictest0-21swapper/210:03:102
6966998940,41cyclictest0-21swapper/111:53:101
6966998939,42cyclictest0-21swapper/112:27:051
6966998935,8cyclictest0-21swapper/109:32:251
6966998935,8cyclictest0-21swapper/109:32:251
6966998932,8cyclictest0-21swapper/110:42:191
6966998932,7cyclictest0-21swapper/110:12:191
6966998931,8cyclictest0-21swapper/107:12:051
6966998930,7cyclictest0-21swapper/108:22:051
6966998928,9cyclictest0-21swapper/111:23:081
6977998841,40cyclictest0-21swapper/212:17:252
6977998841,40cyclictest0-21swapper/209:17:362
6977998841,40cyclictest0-21swapper/209:17:362
6977998841,39cyclictest0-21swapper/209:57:372
6977998841,39cyclictest0-21swapper/209:57:372
6977998825,13cyclictest0-21swapper/211:52:562
6966998848,33cyclictest2374-21systemd-journal11:59:571
6966998847,36cyclictest6952-21cyclictest10:36:461
696699883,23cyclictest31145-21sendmail_mailqu11:17:351
6966998830,8cyclictest0-21swapper/109:57:061
6977998765,15cyclictest6952-21cyclictest07:42:072
6977998730,8cyclictest0-21swapper/210:47:052
6977998727,9cyclictest0-21swapper/209:07:062
6977998727,7cyclictest0-21swapper/211:27:302
696699873,38cyclictest5817-21sshd11:29:571
6966998733,8cyclictest0-21swapper/110:52:201
696699873,30cyclictest20706-21/usr/sbin/munin09:12:281
6966998730,11cyclictest0-21swapper/110:27:031
6977998639,40cyclictest15653-21systemd-run07:27:052
6977998639,40cyclictest15653-21systemd-run07:27:052
6977998639,40cyclictest0-21swapper/208:47:252
6977998636,45cyclictest0-21swapper/207:12:062
6966998636,7cyclictest0-21swapper/112:07:371
6966998630,8cyclictest0-21swapper/110:32:051
6966998630,8cyclictest0-21swapper/110:32:051
6983998512,38cyclictest0-21swapper/309:22:433
6977998535,42cyclictest0-21swapper/210:52:372
6977998529,7cyclictest0-21swapper/212:27:192
6977998526,12cyclictest0-21swapper/210:11:532
696699853,35cyclictest28278-21ssh10:18:241
696699853,35cyclictest28278-21ssh10:18:241
6966998531,7cyclictest0-21swapper/111:33:291
6966998531,7cyclictest0-21swapper/111:33:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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