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2026-03-06 - 21:42
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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 Fri Mar 06, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2632121709,49sleep226405-21grep07:02:252
2535121695,19sleep00-21swapper/007:01:000
268769910553,43cyclictest17400-21latency_hist10:25:492
26026210118,47sleep10-21swapper/107:02:191
2687699964,8cyclictest0-21swapper/210:16:102
2687699964,8cyclictest0-21swapper/210:16:102
26876999640,47cyclictest0-21swapper/207:36:222
26876999633,12cyclictest0-21swapper/209:41:332
26876999432,57cyclictest0-21swapper/210:26:062
26866999477,11cyclictest22448-21systemd-run08:30:480
26876999343,42cyclictest0-21swapper/211:51:102
26876999343,42cyclictest0-21swapper/211:51:102
26876999267,15cyclictest18175-21cron11:20:462
2687699923,79cyclictest13006-21apt-get08:01:052
26876999237,47cyclictest0-21swapper/209:15:502
26876999237,47cyclictest0-21swapper/209:15:502
26876999236,48cyclictest26566-21netstat09:46:142
2687699923,35cyclictest14370-21fschecks_time09:26:102
2687699923,33cyclictest6210-21ssh10:06:192
2687699923,33cyclictest6210-21ssh10:06:192
26876999233,10cyclictest0-21swapper/207:46:232
2687699922,30cyclictest18444-21grep08:16:192
2687699922,30cyclictest18444-21grep08:16:192
26876999154,16cyclictest26857-21cyclictest07:15:512
2687699913,32cyclictest18814-21latency_hist12:15:502
2687699913,32cyclictest18814-21latency_hist12:15:502
26876999127,12cyclictest0-21swapper/211:36:122
2687699912,33cyclictest2072-21grep10:52:432
2687699912,33cyclictest2072-21grep10:52:432
26876999122,14cyclictest0-21swapper/211:15:502
26876999039,45cyclictest0-21swapper/211:46:092
26876999034,7cyclictest0-21swapper/211:31:232
2687699903,39cyclictest20147-21cpuspeed09:36:042
26876999033,9cyclictest0-21swapper/210:46:122
2687699903,33cyclictest6519-21/usr/sbin/munin11:01:112
2687699903,27cyclictest11314-21fschecks_count09:21:092
2687699903,27cyclictest11314-21fschecks_count09:21:092
26876998947,36cyclictest23190-21ntp_kernel_pll_08:31:152
2687699893,38cyclictest25655-21modprobe08:40:472
2687699893,36cyclictest29004-21/usr/sbin/munin09:51:222
2687699893,36cyclictest29004-21/usr/sbin/munin09:51:222
26876998930,14cyclictest26521-21latency_hist10:40:492
26876998929,8cyclictest0-21swapper/212:31:142
26876998928,8cyclictest0-21swapper/209:31:242
26876998926,9cyclictest0-21swapper/211:30:472
2687699892,35cyclictest7214-21sort11:56:092
2687699892,34cyclictest27602-21runrttasks12:30:472
2687699892,34cyclictest27602-21runrttasks12:30:472
2687699892,33cyclictest5419-21latency_hist10:05:502
2687699892,31cyclictest2536-21cut09:06:142
26876998918,13cyclictest0-21swapper/208:55:512
2687699883,35cyclictest29587-21fschecks_count08:51:082
2687699883,34cyclictest25910-21/usr/sbin/munin08:41:222
2687699883,34cyclictest14855-21fschecks_time08:06:092
2687699883,32cyclictest20876-21latency_hist08:25:492
2687699883,32cyclictest20876-21latency_hist08:25:492
2687699883,27cyclictest29655-21latency_hist10:45:502
26876998829,12cyclictest0-21swapper/212:00:572
26876998829,12cyclictest0-21swapper/212:00:572
26876998823,12cyclictest0-21swapper/207:31:052
2687699882,30cyclictest28039-21fschecks_count08:46:472
26876998815,14cyclictest0-21swapper/212:21:112
26876998761,17cyclictest32693-21latency07:21:122
26876998761,17cyclictest32693-21latency07:21:122
2687699873,32cyclictest352-21runrttasks09:58:422
2687699873,32cyclictest18780-21fschecks_time11:21:092
2687699873,32cyclictest11031-21latency_hist07:55:512
2687699872,33cyclictest7741-21latency_hist07:45:502
26869998765,16cyclictest544-21cron07:20:481
2687699864,37cyclictest12921-21/usr/sbin/munin12:06:202
2687699863,31cyclictest27132-21cstates07:06:052
2687699863,26cyclictest9225-21processes10:11:192
2687699863,26cyclictest9225-21processes10:11:192
26876998629,10cyclictest0-21swapper/209:16:122
26866998664,15cyclictest1773-21diskmemload09:55:510
26866998664,15cyclictest1773-21diskmemload09:55:510
2687699853,35cyclictest30808-21cstates07:16:042
2687699853,34cyclictest2815-21apt07:30:472
2687699853,34cyclictest2815-21apt07:30:472
2687699853,31cyclictest18939-21/usr/sbin/munin12:15:572
26876998525,12cyclictest0-21swapper/210:56:252
26876998520,12cyclictest0-21swapper/208:26:142
26869998565,14cyclictest26857-21cyclictest10:27:021
26866998563,14cyclictest3638-21unixbench_singl10:01:250
2687699842,34cyclictest11912-21sshd11:10:022
2687699842,31cyclictest22144-21unixbench_multi10:32:232
26866998469,8cyclictest0-21swapper/009:05:470
2687699839,23cyclictest30446-21sort11:40:572
2687699839,23cyclictest30446-21sort11:40:572
2687699833,35cyclictest1101-21sendmail_mailqu09:02:132
2687699833,32cyclictest16321-21cstates08:11:042
26869998358,16cyclictest28766-21unixbench_singl08:47:021
2686699834,44cyclictest15-21ksoftirqd/011:37:420
26866998217,41cyclictest15-21ksoftirqd/011:42:030
26866998217,41cyclictest15-21ksoftirqd/011:42:030
169232820,10sleep116928-21sed12:11:231
169232820,10sleep116928-21sed12:11:231
2687699812,27cyclictest11360-21fschecks_count07:56:102
26869998160,14cyclictest1773-21diskmemload11:48:321
26869998045,8cyclictest181rcu_preempt12:16:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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