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2026-05-23 - 07:42
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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 Sat May 23, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48759910363,34cyclictest2374-21systemd-journal22:27:342
540921000,8sleep10-21swapper/122:32:051
4867999960,31cyclictest4852-21cyclictest21:20:101
4867999960,31cyclictest4852-21cyclictest21:20:101
4867999855,36cyclictest0-21swapper/121:25:581
34082989,59sleep23485-21awk18:55:562
4867999631,13cyclictest0-21swapper/119:30:421
486799962,36cyclictest11318-21latency_hist20:55:401
486799962,36cyclictest11318-21latency_hist20:55:401
486799953,41cyclictest10820-21timerandwakeup22:41:121
486799952,34cyclictest1481-21memory22:26:031
487599932,61cyclictest21455-21apt-get22:06:112
487599932,61cyclictest21455-21apt-get22:06:112
4867999338,8cyclictest0-21swapper/120:15:411
4867999332,9cyclictest0-21swapper/123:55:281
4867999327,11cyclictest0-21swapper/119:20:411
4867999327,11cyclictest0-21swapper/119:20:411
486799932,36cyclictest7793-21cpu00:25:521
486799932,32cyclictest27426-21apt-get20:06:101
487599923,64cyclictest28120-21ssh23:10:562
487599923,64cyclictest28120-21ssh23:10:562
487599922,43cyclictest11386-21apt-get20:55:482
486799923,40cyclictest23903-21ssh22:10:061
486799923,40cyclictest23903-21ssh22:10:061
486799923,35cyclictest5710-21ls23:27:291
486799923,35cyclictest25037-21/usr/sbin/munin21:20:481
486799923,33cyclictest25901-21taskset00:01:071
4867999228,14cyclictest0-21swapper/121:50:591
4875999168,15cyclictest21646-21unixbench_multi19:46:132
4875999168,15cyclictest21646-21unixbench_multi19:46:132
4875999150,35cyclictest10868-21timerwakeupswit22:41:122
4867999138,11cyclictest0-21swapper/123:00:521
4867999136,8cyclictest0-21swapper/100:15:361
4867999136,8cyclictest0-21swapper/100:15:361
486799913,34cyclictest15867-21ps21:56:101
486799913,34cyclictest15867-21ps21:56:101
486799913,33cyclictest13949-21ssh23:41:071
486799912,37cyclictest7717-21fschecks_time23:30:591
486799903,34cyclictest28597-21fschecks_time23:11:381
486799903,34cyclictest28597-21fschecks_time23:11:381
486799902,36cyclictest8747-21apt-key19:10:411
487599897,35cyclictest13582-21needreboot21:01:042
487599897,35cyclictest13582-21needreboot21:01:042
4875998948,33cyclictest0-21swapper/222:35:592
4875998948,33cyclictest0-21swapper/222:35:592
487599893,37cyclictest26782-21ssh21:22:192
4875998931,43cyclictest0-21swapper/200:21:052
4875998931,43cyclictest0-21swapper/200:21:052
4875998927,50cyclictest0-21swapper/222:18:422
4875998915,32cyclictest15010-21grep19:26:572
486799894,33cyclictest2849-21latency_hist20:30:391
4867998934,9cyclictest0-21swapper/120:41:441
486799893,36cyclictest27039-21gpgv20:05:401
486799893,35cyclictest28118-21grep22:16:081
487599884,35cyclictest31394-21cstates00:10:542
487599884,35cyclictest31394-21cstates00:10:542
487599883,29cyclictest1569150cat22:50:392
486799883,39cyclictest3079-21latency_hist21:35:401
486799883,35cyclictest9124-21vmstat20:46:141
486799882,37cyclictest13910-21rm22:46:131
486799882,35cyclictest24318-21runrttasks23:58:501
486799882,34cyclictest1230-21latency_hist23:20:391
486799874,38cyclictest20981-21fschecks_time19:45:581
486799874,38cyclictest20981-21fschecks_time19:45:581
486799873,35cyclictest9961-21unixbench_singl19:11:371
486799873,35cyclictest4948-21latency_hist19:00:421
486799873,35cyclictest1369-21latency_hist20:25:401
486799873,35cyclictest1369-21latency_hist20:25:401
486799872,37cyclictest20623-21latency_hist19:45:401
487599864,36cyclictest4699-21/usr/sbin/munin23:27:292
487599863,38cyclictest12442-21grep21:50:592
487599863,34cyclictest352-21runrttasks00:27:202
4875998633,43cyclictest0-21swapper/221:36:062
486799864,33cyclictest24704-21ssh22:10:591
486799864,33cyclictest1523-21/usr/sbin/munin23:20:591
4867998638,11cyclictest4852-21cyclictest00:16:231
4867998636,10cyclictest12733-21diskmemload22:02:511
486799863,35cyclictest18468-21unixbench_singl19:36:121
486799863,33cyclictest16293-21grep21:05:591
486799863,33cyclictest16293-21grep21:05:591
486799863,31cyclictest30713-21fschecks_time22:21:001
4867998630,11cyclictest0-21swapper/121:13:111
486799862,37cyclictest352-21runrttasks21:40:421
4875998563,16cyclictest8441-21/usr/sbin/munin19:10:392
487599853,38cyclictest11015-21/usr/sbin/munin23:36:082
487599853,31cyclictest19353-21sh23:50:522
487599852,21cyclictest956-21expr21:31:092
4875998514,30cyclictest22766-21grep23:01:122
486799855,37cyclictest4458-21latency_hist20:35:391
486799853,35cyclictest27780-21cut23:10:401
486799853,35cyclictest27780-21cut23:10:401
486799853,33cyclictest352-21runrttasks00:06:431
486799853,33cyclictest15904-21/usr/sbin/munin22:50:571
486799853,33cyclictest12110-21switchtime20:56:111
4861998570,9cyclictest28187-21ssh23:11:070
4861998570,9cyclictest28187-21ssh23:11:070
4861998560,10cyclictest181rcu_preempt23:29:360
4861998551,13cyclictest181rcu_preempt21:34:150
487599845,37cyclictest19274-21if_err_eth022:56:002
487599843,37cyclictest13945-21ntpq23:41:062
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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