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2026-06-20 - 21:07
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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 Sat Jun 20, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21982991132,64cyclictest21317-21apt-get08:33:531
219789911359,45cyclictest9216-21apt-get09:18:590
21987999977,16cyclictest18134-21/usr/sbin/munin09:34:152
21987999977,16cyclictest18134-21/usr/sbin/munin09:34:152
21978999980,14cyclictest21970-21cyclictest12:28:420
21982999757,34cyclictest13203-21/usr/sbin/munin11:14:161
2198299974,9cyclictest0-21swapper/110:38:571
216552966,18sleep20-21swapper/206:56:342
2198299945,84cyclictest0-21swapper/111:08:571
2198299945,84cyclictest0-21swapper/111:08:571
21978999460,23cyclictest24779-21apt-get08:43:570
2198799933,66cyclictest16449-21apt-get11:18:552
21982999246,39cyclictest0-21swapper/112:04:061
2198299915,78cyclictest21986-21latency_hist06:58:451
21978999167,16cyclictest32212-21latency_hist07:28:450
21978999167,16cyclictest32212-21latency_hist07:28:450
21978999157,28cyclictest0-21swapper/006:58:450
2198299905,76cyclictest0-21swapper/108:48:541
2198299905,73cyclictest0-21swapper/109:18:591
21987998969,13cyclictest352-21runrttasks07:09:072
2198299895,79cyclictest0-21swapper/108:03:541
2198299893,40cyclictest4749-21ssh10:04:221
2198299884,76cyclictest0-21swapper/106:58:531
2198299884,76cyclictest0-21swapper/106:58:531
2198299883,41cyclictest25105-21/usr/sbin/munin11:34:121
2198299883,41cyclictest25105-21/usr/sbin/munin11:34:121
21978998861,16cyclictest13655-21apt-get12:09:350
21978998861,16cyclictest13655-21apt-get12:09:350
21978998856,23cyclictest0-21swapper/011:29:580
21978998855,25cyclictest3648-21ssh10:03:550
2198299875,8cyclictest0-21swapper/107:48:591
21982998746,34cyclictest0-21swapper/109:08:411
21982998746,34cyclictest0-21swapper/109:08:411
21982998741,38cyclictest0-21swapper/110:13:441
2198299873,8cyclictest0-21swapper/112:09:351
2198299873,8cyclictest0-21swapper/112:09:351
2198299873,71cyclictest0-21swapper/111:28:581
2198299873,40cyclictest19421-21ssh12:18:511
2198299873,40cyclictest19421-21ssh12:18:511
21978998766,12cyclictest24565-21apt-get10:38:570
21978998730,28cyclictest20486-21ssh11:24:490
21987998664,15cyclictest1435-21apt-key07:33:452
2198299865,72cyclictest0-21swapper/107:58:571
2198299864,9cyclictest0-21swapper/110:58:521
2198299864,7cyclictest0-21swapper/110:13:531
21982998645,33cyclictest0-21swapper/111:20:121
21982998638,41cyclictest12179-21sh09:23:521
21982998638,41cyclictest12179-21sh09:23:521
2198299863,75cyclictest0-21swapper/107:28:581
2198299863,42cyclictest8378-21taskset07:53:571
2198299863,38cyclictest3388-21cstates09:08:581
21978998647,29cyclictest21572-21apt-get10:33:560
21982998556,25cyclictest21970-21cyclictest11:51:341
2198299853,41cyclictest30747-21/usr/sbin/munin10:49:151
2198299853,39cyclictest30603-21timerandwakeup08:59:171
2198299853,39cyclictest30603-21timerandwakeup08:59:171
2198299853,37cyclictest9161-21sh11:06:361
2198299853,37cyclictest352-21runrttasks11:43:551
2198299852,41cyclictest27659-21ssh09:49:091
2198299852,41cyclictest27659-21ssh09:49:091
2198299852,38cyclictest6217-21find09:13:531
2198299852,38cyclictest6217-21find09:13:531
21978998559,19cyclictest24712-21latency_hist08:43:450
21978998559,19cyclictest24712-21latency_hist08:43:450
21978998538,40cyclictest87-21kswapd011:48:560
21978998537,40cyclictest0-21swapper/012:03:560
21978998536,38cyclictest23046-21taskset08:38:450
21987998470,10cyclictest21970-21cyclictest08:58:442
2198799844,60cyclictest27766-21apt-get10:43:592
2198299845,71cyclictest0-21swapper/108:23:551
2198299844,8cyclictest0-21swapper/107:38:531
2198299844,75cyclictest0-21swapper/110:18:561
2198299844,13cyclictest22388-21apt-get12:23:531
2198299843,40cyclictest30843-21fschecks_count07:24:051
2198299843,40cyclictest30843-21fschecks_count07:24:051
2198299843,40cyclictest24151-21ssh09:43:551
2198299843,40cyclictest23151-21/usr/sbin/munin08:38:521
2198299843,40cyclictest23151-21/usr/sbin/munin08:38:521
2198299843,38cyclictest17460-21sshd11:57:551
2198299843,37cyclictest15955-21ssh10:24:051
2198299843,32cyclictest25575-21sendmail-msp07:08:411
21978998465,10cyclictest26412-21apt-get08:48:570
21978998462,11cyclictest6522-21apt-get07:48:590
2197899843,62cyclictest16449-21apt-get11:18:570
21987998357,19cyclictest544-21cron11:48:412
21982998363,14cyclictest24239-21sh10:38:401
2198299833,40cyclictest19224-21ssh11:23:541
2198299833,38cyclictest28427-21fschecks_time11:39:051
2198299833,38cyclictest23855-21runrttasks09:43:421
2198299833,38cyclictest2082-21sh10:00:161
2198299833,37cyclictest29393-21ssh08:58:411
2198299833,31cyclictest16427-21/usr/sbin/munin12:14:131
2198299832,35cyclictest1664-21taskset07:33:531
21978998361,10cyclictest30766-21apt-get10:48:540
21987998264,14cyclictest22367-21kworker/u18:0+events_unbound08:48:412
2198299824,9cyclictest0-21swapper/107:13:551
2198299823,39cyclictest24788-21taskset08:43:561
2198299822,39cyclictest13665-21/usr/sbin/munin08:09:081
2198299822,39cyclictest13665-21/usr/sbin/munin08:09:081
2198299822,33cyclictest20312-21taskset10:31:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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