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2025-12-04 - 15:20
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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 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
2604099963,24cyclictest14516-21fschecks_count10:33:570
2604099963,21cyclictest15882-21ssh12:29:540
2604099962,21cyclictest7519-21unixbench_multi09:19:110
2604099962,21cyclictest14864-21processes09:34:100
2606099953,40cyclictest32062-21fschecks_time09:03:572
2606099953,30cyclictest14024-21fschecks_time08:08:562
2606099952,41cyclictest27528-21sort09:58:492
2604099954,27cyclictest9422-1kworker/0:0H+kblockd08:58:500
2604099954,21cyclictest14124-21ssh12:28:140
26040999539,48cyclictest0-21swapper/010:02:510
2604099953,31cyclictest3580-21ntp_kernel_pll_12:09:030
2604099953,30cyclictest7947-21grep11:19:130
2604099953,30cyclictest7947-21grep11:19:130
2604099953,27cyclictest24511-21modprobe09:53:330
2604099953,27cyclictest24511-21modprobe09:53:330
2604099953,27cyclictest10966-21wc07:58:580
2604099953,25cyclictest5588-21/usr/sbin/munin11:14:120
2604099953,23cyclictest30162-21apt-get10:03:460
2604099953,23cyclictest30162-21apt-get10:03:460
2604099953,21cyclictest24814-21latency11:48:590
26040999516,25cyclictest1874-21wc09:09:110
26040999516,25cyclictest1874-21wc09:09:110
26060999442,46cyclictest16259-21fschecks_time11:33:572
2606099943,36cyclictest6433-21grep07:44:092
2606099943,34cyclictest12309-21taskset10:29:582
2606099943,33cyclictest8562-21latency_hist10:23:382
2606099943,33cyclictest8497-21apt-config12:18:362
2604099944,28cyclictest16319-21/usr/sbin/munin11:33:580
2604099943,27cyclictest18792-21latency_hist08:23:370
2604099942,28cyclictest30280-21cat07:19:010
2606099933,36cyclictest28560-21/usr/sbin/munin08:54:082
2606099933,36cyclictest28560-21/usr/sbin/munin08:54:082
2606099933,33cyclictest26487-21fschecks_time07:08:562
26060999332,14cyclictest0-21swapper/211:59:592
26060999332,12cyclictest0-21swapper/208:33:362
2606099932,37cyclictest17100-21cpu10:38:492
2606099932,34cyclictest13885-21idleruntime-cro09:33:332
26060999323,33cyclictest24426-21grep11:48:502
26040999334,52cyclictest0-21swapper/007:39:050
2604099933,30cyclictest7427-21ssh10:20:450
2604099933,30cyclictest7427-21ssh10:20:450
2604099933,30cyclictest1447-21cat07:29:090
2604099933,30cyclictest1447-21cat07:29:090
2604099933,28cyclictest20674-21grep08:28:550
2604099933,27cyclictest11772-21cstates09:28:530
2604099933,21cyclictest26198-21runrttasks10:54:050
2604099932,26cyclictest10720-21perl11:23:570
2604099932,23cyclictest23563-21latency_hist08:38:360
2604099932,22cyclictest29055-21fschecks_time10:59:170
2604099932,22cyclictest29055-21fschecks_time10:59:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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