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2026-08-22 - 12:31
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sat Aug 22, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1026323827,0sleep30-21swapper/319:28:563
1030623622,0sleep00-21swapper/019:29:250
1035323526,0sleep20-21swapper/219:29:592
1041123425,0sleep10-21swapper/119:30:381
104939974,0cyclictest2007-21diskstats23:31:021
8305060,0irq/26-0000:00:9023-21ls22:00:492
8305060,0irq/26-0000:00:9023-21ls22:00:492
339960,0migration/324401-21sh23:23:373
339960,0migration/324381-21sh21:50:593
339960,0migration/323515-21munin-node21:31:043
339960,0migration/313726-21sh22:57:533
29815060,0irq/29-eth0-tx-28793-21munin-node20:06:020
29805060,0irq/28-eth0-rx-31849-21cut20:06:053
29805060,0irq/28-eth0-rx-17314-21iostat00:36:043
29805060,0irq/28-eth0-rx-0-21swapper/300:26:013
149960,0migration/032647-21sh23:27:430
149960,0migration/027660-21sh22:29:400
149960,0migration/023463-21fschecks_time00:21:020
149960,0migration/021467-21latency_hist22:45:480
149960,0migration/01112-21sh22:12:230
104939965,0cyclictest4853-21awk23:51:051
104939964,0cyclictest8794-21open_files22:16:081
104939964,0cyclictest452-21fschecks_time23:11:021
104939964,0cyclictest31730-21grep23:26:111
104939964,0cyclictest24549-21date00:40:491
104939964,0cyclictest21819-21aten2.4-expect20:45:591
104939964,0cyclictest21728-21sh20:00:591
104939964,0cyclictest12670-21df_inode23:56:021
104939964,0cyclictest11135-21entropy19:31:011
104939963,0cyclictest564-21tune2fs19:45:591
104939963,0cyclictest3832-21cut21:16:061
104939963,0cyclictest322-21df20:30:591
104939963,0cyclictest31551-21ssh21:52:291
104939963,0cyclictest3109-21ssh00:06:081
104939963,0cyclictest30661-21diskstats22:51:011
104939963,0cyclictest29412-21df_inode20:51:021
104939963,0cyclictest28416-21ls23:46:031
104939963,0cyclictest26736-21cat23:06:061
104939963,0cyclictest23812-21basename00:21:041
104939963,0cyclictest23058-21if_err_eth1.321:31:031
104939963,0cyclictest20420-21port_sshpriv00:16:091
104939963,0cyclictest20397-21kernelversion23:41:061
104939963,0cyclictest18990-21if_eth019:36:041
104939963,0cyclictest18665-21diskstats21:06:001
104939963,0cyclictest18392-21tr20:41:061
104939963,0cyclictest18279-21diskstats22:06:011
104939963,0cyclictest18133-21rm22:21:431
104939963,0cyclictest16610-21sensors_volt23:36:121
104939963,0cyclictest15139-21ssh00:33:481
104939963,0cyclictest14260-21memory23:16:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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