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2026-04-23 - 11:42
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 792 highest latencies:
System rack7slot8.osadl.org (updated Wed Apr 22, 2026 14:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2561425680,12sleep025615-21wget07:05:130
266939917236,16cyclictest10250irq/56-4a10000012:19:210
26693991639,20cyclictest1276-21runrttasks08:45:260
26693991599,17cyclictest11493-21df08:15:160
266939915943,23cyclictest10150irq/55-4a10000009:35:400
26693991557,34cyclictest3711-21https09:55:050
266939915542,27cyclictest0-21swapper/012:26:520
266939915524,16cyclictest26680-21cyclictest07:42:110
266939915519,17cyclictest23650-21latency_hist09:05:030
266939915414,31cyclictest787-21haveged11:00:050
266939915043,27cyclictest27200-21df_inode11:25:190
266939914458,12cyclictest101ktimersoftd/008:05:400
266939913643,19cyclictest10150irq/55-4a10000008:25:390
3131121168,90sleep031350-21cp11:40:340
2879021094,91sleep028778-21apt-get07:17:060
71421087,90sleep01305-21snmpd11:46:060
28963210313,77sleep028966-21df_inode09:25:200
1858321038,11sleep0101ktimersoftd/010:50:330
10049210315,77sleep09047-21apt-get10:16:250
2978621016,81sleep029794-21netstat11:35:300
64152985,82sleep06419-21run-parts12:09:470
121892985,79sleep012190-21diskstats12:30:200
311242965,80sleep031129-21munin-run09:35:020
241422945,76sleep024153-21ntp_states09:05:370
26693999349,30cyclictest101ktimersoftd/007:50:230
26693999136,19cyclictest10438-21ntpq08:10:350
4352905,74sleep0450-21/usr/sbin/munin09:40:430
124462875,70sleep012452-21ntp_states10:25:400
286312865,70sleep028632-21ntp_states11:30:380
2669399866,30cyclictest30402-21latency_hist07:25:020
26693998647,10cyclictest101ktimersoftd/009:56:170
26693998645,24cyclictest0-21swapper/008:52:070
66882855,65sleep06686-21/usr/sbin/munin10:05:120
287242850,7sleep028726-21latency_hist09:25:030
2669399858,44cyclictest13502-21diskstats10:30:220
26693998526,42cyclictest5539-21wget10:00:150
26693998525,27cyclictest8306-21/usr/sbin/munin10:10:360
319542846,66sleep031957-21df_inode07:30:190
2669399848,39cyclictest2257-21sshd11:51:200
26693998427,38cyclictest21301-21wget08:55:130
26693998353,14cyclictest10150irq/55-4a10000009:17:120
26693998339,27cyclictest11363-21sendmail_mailtr10:20:440
26693998250,15cyclictest10150irq/55-4a10000007:45:200
26693998242,27cyclictest3650irq/20-4900000010:35:380
26693998139,28cyclictest3650irq/20-4900000012:10:250
26693998138,29cyclictest10250irq/56-4a10000012:35:110
26693998131,17cyclictest1305-21snmpd08:22:000
26693998120,14cyclictest21887-21latency_hist11:05:030
26693998030,32cyclictest6353-21cut07:55:120
26693998028,34cyclictest754-21systemd-journal07:30:000
16282805,64sleep01629-21memory09:45:330
26693997952,12cyclictest10150irq/55-4a10000007:35:180
26693997949,14cyclictest10150irq/55-4a10000011:20:230
26693997933,29cyclictest17038-21cut10:45:120
26693997859,11cyclictest101ktimersoftd/008:40:180
26693997853,10cyclictest101ktimersoftd/011:05:270
26693997848,14cyclictest10150irq/55-4a10000008:30:230
26693997828,16cyclictest9155-21sshd12:20:160
26693997754,16cyclictest8775-21latency_hist08:05:030
26693997722,18cyclictest15910-21wget10:40:160
26693997656,12cyclictest101ktimersoftd/011:16:150
26693997646,14cyclictest10150irq/55-4a10000008:40:010
26693997646,13cyclictest10150irq/55-4a10000011:55:100
26693997549,20cyclictest25847-21seq09:12:380
26693997545,13cyclictest10150irq/55-4a10000011:10:310
26693997457,10cyclictest101ktimersoftd/007:10:370
26693997143,19cyclictest4620-21/usr/sbin/munin12:00:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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