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2025-11-15 - 15:41
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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 100 highest latencies:
System rack2slot7.osadl.org (updated Sat Nov 15, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
218794994730,3cyclictest400218-21ssh12:12:570
21879499444,38cyclictest0-21swapper/011:00:560
218794993724,7cyclictest280179-21ntpq09:43:040
21879499363,5cyclictest242212-21sendmail-msp08:28:050
21879499363,32cyclictest0-21swapper/011:53:050
218794993626,7cyclictest0-21swapper/011:23:040
21879499362,27cyclictest434368-21cron12:45:520
218794993619,7cyclictest392210-21ntpq12:03:030
218794993515,6cyclictest420937-21ssh12:32:590
21879499351,25cyclictest320161-21unixbench_multi10:33:100
21879499350,23cyclictest0-21swapper/010:03:050
218794993424,3cyclictest0-21swapper/010:10:580
21879499326,17cyclictest228685-21sendmail-msp07:53:070
218796993111,2cyclictest11050irq/107-eth%d12:12:572
21879499314,21cyclictest338687-21/usr/sbin/munin10:58:040
218794993121,4cyclictest0-21swapper/012:08:030
218794993121,4cyclictest0-21swapper/012:08:030
21879699303,19cyclictest372658-21/usr/sbin/munin11:38:122
21879599302,10cyclictest111788-21systemd-journal11:48:031
21879499302,15cyclictest0-21swapper/010:07:480
21879499301,20cyclictest0-21swapper/011:16:450
21879699296,5cyclictest0-21swapper/212:28:062
218794992915,9cyclictest11050irq/107-eth%d12:22:560
218795992817,7cyclictest400134-21/usr/sbin/munin12:12:591
21879499285,4cyclictest218793-21cyclictest07:15:520
21879499282,2cyclictest406219-21/usr/sbin/munin12:18:060
218794992820,1cyclictest0-21swapper/008:53:040
21879499281,8cyclictest265420-21grep09:23:090
21879499274,7cyclictest111788-21systemd-journal09:12:330
218794992718,2cyclictest0-21swapper/011:08:290
218794992715,10cyclictest111788-21systemd-journal09:07:130
21879699261,7cyclictest0-21swapper/211:25:542
218794992615,4cyclictest368921-21timerandwakeup11:33:130
21879699258,5cyclictest367097-21ssh11:31:502
21879599253,17cyclictest619-21mta-sts-daemon12:34:181
218795992520,3cyclictest368034-21fschecks_time11:33:031
112699250,3rtkit-daemon1125-21rtkit-daemon10:41:572
218796992412,6cyclictest345830-21sendmail-msp11:05:552
21879699241,16cyclictest111788-21systemd-journal09:11:242
21879599246,3cyclictest0-21swapper/111:58:121
218794992412,2cyclictest0-21swapper/009:57:590
21879699239,11cyclictest306143-21ssh10:16:152
21879499237,2cyclictest0-21swapper/011:28:040
21879499236,5cyclictest11050irq/107-eth%d11:13:040
21879499232,2cyclictest375849-21aten_r2power_po11:42:550
218794992316,6cyclictest0-21swapper/008:13:020
21879499231,21cyclictest0-21swapper/010:52:580
21879499231,21cyclictest0-21swapper/009:28:100
21879699224,16cyclictest619-21mta-sts-daemon09:30:512
218796992219,2cyclictest376159-21gltestperf11:42:572
21879599228,11cyclictest257371-21latency_hist09:10:521
21879599227,9cyclictest1005-21mta-sts-daemon10:46:471
218795992218,3cyclictest277177-21unixbench_singl09:38:071
218795992218,3cyclictest277177-21unixbench_singl09:38:071
21879499229,11cyclictest0-21swapper/011:48:030
21879499226,12cyclictest330200-21ssh10:46:060
21879499222,12cyclictest11050irq/107-eth%d12:29:490
218794992216,5cyclictest230412-21base6407:50:520
218794992212,5cyclictest0-21swapper/008:31:190
21879699215,11cyclictest619-21mta-sts-daemon09:10:192
21879699211,6cyclictest335818-21ntpq10:53:062
21879599219,10cyclictest0-21swapper/111:38:121
21879599213,15cyclictest111788-21systemd-journal10:13:021
21879699207,6cyclictest0-21swapper/207:15:522
21879699203,13cyclictest339686-21/usr/sbin/munin10:58:042
21879699202,12cyclictest413892-21sendmail-msp12:31:572
21879599205,12cyclictest413892-21sendmail-msp12:30:521
21879599204,13cyclictest362655-21sh11:26:071
218795992014,5cyclictest426260-21gltestperf12:38:011
218795992014,5cyclictest360880-21unixbench_singl11:23:071
21879499201,15cyclictest0-21swapper/009:18:250
21879499200,19cyclictest259-21jbd2/mmcblk0p2-809:33:030
21879499200,19cyclictest191rcuc/010:38:010
21879699193,10cyclictest332008-21ntpq10:48:042
218796991917,1cyclictest0-21swapper/212:38:002
218796991914,4cyclictest259-21jbd2/mmcblk0p2-810:10:262
21879599192,9cyclictest218797-21/usr/sbin/munin07:15:521
218795991913,4cyclictest287424-21gltestperf09:52:591
218795991910,6cyclictest335316-21fschecks_time10:53:011
21879499193,13cyclictest426669-21ntpq12:38:050
21879499193,12cyclictest111788-21systemd-journal07:33:050
21879499191,1cyclictest312003-21ntpq10:23:040
112699190,0rtkit-daemon0-21swapper/010:44:130
21879999184,8cyclictest0-21swapper/311:38:123
21879699187,8cyclictest1006-21mta-sts-daemon09:43:042
21879699186,7cyclictest992-21lldpd11:00:562
21879699183,9cyclictest303893-21ntpq10:13:022
21879699183,12cyclictest111788-21systemd-journal11:48:022
218796991813,2cyclictest0-21swapper/211:23:012
218796991812,4cyclictest220364-21grep07:18:062
21879699180,4cyclictest58-21kcompactd011:13:042
21879599187,7cyclictest619-21mta-sts-daemon11:15:071
21879599181,10cyclictest227202-21cat07:40:531
21879499185,8cyclictest0-21swapper/010:30:530
21879499183,12cyclictest248797-21sendmail-msp08:46:220
21879699174,8cyclictest276307-21/usr/sbin/munin09:37:582
21879699174,8cyclictest276307-21/usr/sbin/munin09:37:582
21879699174,10cyclictest392298-21ntp_states12:03:042
21879699172,8cyclictest282042-21sendmail-msp09:53:022
218796991715,1cyclictest1007-21mta-sts-daemon08:23:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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