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2025-12-04 - 22:17
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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 rackbslot7.osadl.org (updated Thu Dec 04, 2025 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25363214610,93sleep125419-21timerandwakeup07:05:251
25130212113,69sleep024536-21/usr/sbin/munin07:05:160
26052991193,96cyclictest11514-21apt-get10:29:211
260409911121,52cyclictest0-21swapper/007:44:420
260609910952,50cyclictest723-21diskmemload10:04:032
260609910952,50cyclictest723-21diskmemload10:04:032
26052991093,97cyclictest1348-21apt-get11:08:481
26052991093,97cyclictest1348-21apt-get11:08:481
26052991093,76cyclictest28649-21apt-get10:58:501
26052991093,76cyclictest28649-21apt-get10:58:501
26040991073,27cyclictest11687-21ssh10:29:190
26040991072,41cyclictest11364-21seq09:28:350
26052991066,79cyclictest9240-21cstates12:19:271
26052991066,79cyclictest9240-21cstates12:19:271
26040991062,25cyclictest23518-21runrttasks10:50:150
26040991062,25cyclictest23518-21runrttasks10:50:150
26040991053,29cyclictest691-21cron10:43:340
260409910512,23cyclictest18318-21cat12:34:100
260409910512,23cyclictest18318-21cat12:34:100
260409910235,59cyclictest0-21swapper/011:44:100
26040991022,21cyclictest0-21swapper/011:08:520
26040991022,21cyclictest0-21swapper/011:08:520
26040991012,25cyclictest10942-21sh12:22:040
26040991012,25cyclictest10942-21sh12:22:040
2606099994,35cyclictest25873-21fschecks_time10:53:592
2604099993,25cyclictest4419-21ps09:14:070
2604099992,18cyclictest19558-21apt-get09:43:460
26060999828,12cyclictest0-21swapper/207:33:372
26060999828,12cyclictest0-21swapper/207:33:372
2604099983,27cyclictest29596-21modprobe07:18:340
2604099983,12cyclictest3090-21apt-get10:13:500
2604099983,12cyclictest3090-21apt-get10:13:500
2604099982,29cyclictest7137-21rm12:14:510
26060999735,9cyclictest0-21swapper/211:04:582
26060999735,9cyclictest0-21swapper/211:04:582
26060999732,8cyclictest0-21swapper/212:38:362
26060999732,8cyclictest0-21swapper/212:38:362
2604099973,29cyclictest2241-21/usr/sbin/munin07:34:080
2604099973,29cyclictest2241-21/usr/sbin/munin07:34:080
2604099973,28cyclictest27849-21grep11:54:070
2604099973,28cyclictest26691-21modprobe08:48:340
26060999637,9cyclictest0-21swapper/209:09:502
26060999637,9cyclictest0-21swapper/209:09:502
2606099963,45cyclictest19581-21ssh09:43:502
2604099964,10cyclictest31416-21apt-get11:03:500
2604099964,10cyclictest31416-21apt-get11:03:500
2604099963,29cyclictest16948-21latency_hist08:18:360
2604099963,29cyclictest16948-21latency_hist08:18:360
2604099963,24cyclictest9321-21/usr/sbin/munin10:24:070
2604099963,24cyclictest9321-21/usr/sbin/munin10:24:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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