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2026-04-10 - 00:09
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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 Apr 09, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176621030,9sleep21756-21munin-run09:53:312
2911921027,17sleep10-21swapper/107:00:181
28808210010,61sleep228873-21cat06:59:172
2952699984,82cyclictest0-21swapper/107:48:441
29522999616,62cyclictest10034-21cat11:54:060
29522999534,26cyclictest5365-21sh11:47:130
2952699934,82cyclictest0-21swapper/110:58:451
29526999056,28cyclictest298-21in:imuxsock09:40:161
2952699904,79cyclictest0-21swapper/111:03:441
2952699895,76cyclictest0-21swapper/107:33:441
29531998864,15cyclictest10197-21sh09:13:312
2952699874,75cyclictest0-21swapper/112:18:431
29522998764,12cyclictest0-21swapper/008:48:540
2952699863,75cyclictest22547-21ssh09:33:431
2952699863,37cyclictest29130-21ssh09:44:001
2952699863,37cyclictest29130-21ssh09:44:001
2952699862,42cyclictest8583-21latency_hist10:58:331
29522998655,24cyclictest22537-21ssh09:33:420
29522998631,27cyclictest13149-21grep11:59:070
29522998631,27cyclictest13149-21grep11:59:070
2952699855,75cyclictest0-21swapper/108:28:461
2952699855,73cyclictest0-21swapper/108:58:451
2952699854,74cyclictest23758-21ssh11:23:431
2952699853,8cyclictest0-21swapper/108:48:471
2952699853,38cyclictest28938-21latency_hist10:38:361
2952699853,37cyclictest5088-21grep09:04:011
2952699853,37cyclictest23415-21ssh10:28:491
2952699845,69cyclictest0-21swapper/111:28:441
29526998441,34cyclictest0-21swapper/111:58:351
2952699843,7cyclictest0-21swapper/109:13:461
2952699842,37cyclictest9034-21ssh10:04:071
2952699842,36cyclictest27576-21/usr/sbin/munin12:23:571
2952699842,34cyclictest20370-21switchtime09:29:141
2952699842,34cyclictest20370-21switchtime09:29:141
2952699835,71cyclictest0-21swapper/108:14:101
29526998339,36cyclictest0-21swapper/110:48:461
2952699833,39cyclictest15570-21ssh12:04:061
2952699833,39cyclictest15477-21/usr/sbin/munin11:09:031
2952699833,39cyclictest15477-21/usr/sbin/munin11:09:031
2952699833,38cyclictest18180-21ssh10:19:421
2952699833,35cyclictest23174-21date10:28:351
2952699833,35cyclictest23174-21date10:28:351
2952699832,41cyclictest16782-21munin-run10:18:321
2952699832,39cyclictest30703-21ntp_kernel_pll_12:28:591
2952699832,39cyclictest30703-21ntp_kernel_pll_12:28:591
2952699832,38cyclictest14819-21timerandwakeup07:54:071
29522998341,36cyclictest24642-21rm10:29:490
29522998331,35cyclictest19545-21sh09:28:460
29522998331,35cyclictest19545-21sh09:28:460
268302830,6sleep00-21swapper/012:23:300
2952699825,72cyclictest0-21swapper/108:03:471
2952699824,9cyclictest0-21swapper/107:03:481
2952699823,74cyclictest0-21swapper/111:18:461
2952699823,74cyclictest0-21swapper/111:18:461
2952699823,39cyclictest32461-21grep07:09:091
2952699822,37cyclictest1702-21/usr/sbin/munin08:54:071
2952699822,36cyclictest2348-21sort07:18:341
2952699822,34cyclictest24865-21/usr/sbin/munin08:24:071
29522998254,20cyclictest27180-21ssh12:23:440
29522998242,26cyclictest24842-21ssh11:24:090
29522998234,22cyclictest27851-21rm09:42:340
29531998156,15cyclictest0-21swapper/211:48:542
29526998165,10cyclictest28496-21kworker/u17:0-ext4-rsv-conversion11:53:321
2952699815,69cyclictest0-21swapper/107:58:471
29526998141,32cyclictest0-21swapper/109:59:581
29526998140,33cyclictest0-21swapper/110:09:071
2952699813,38cyclictest32710-21ssh11:38:461
2952699813,37cyclictest31992-21latency09:48:561
2952699813,37cyclictest29992-21/usr/sbin/munin10:39:391
2952699813,36cyclictest32437-21runrttasks10:43:421
2952699813,36cyclictest32437-21runrttasks10:43:421
2952699813,30cyclictest3272-21/usr/sbin/munin11:43:471
2952699813,29cyclictest6353-21grep07:29:031
2952699812,38cyclictest19835-21modprobe12:10:311
2952699812,38cyclictest19835-21modprobe12:10:311
2952699812,34cyclictest21227-21/usr/sbin/munin12:13:561
2952699812,33cyclictest19053-21/usr/sbin/munin08:08:531
2952699812,33cyclictest19053-21/usr/sbin/munin08:08:531
29522998164,10cyclictest8082-21ssh10:03:420
29522998163,7cyclictest0-21swapper/007:48:350
29522998163,7cyclictest0-21swapper/007:48:350
29522998163,10cyclictest0-21swapper/011:23:350
29522998163,10cyclictest0-21swapper/011:23:350
29522998152,24cyclictest544-21cron07:38:320
29522998126,22cyclictest0-21swapper/010:53:530
29531998065,11cyclictest29507-21cyclictest07:49:162
29526998040,33cyclictest0-21swapper/111:13:511
2952699803,70cyclictest4195-21diskmemload09:08:471
2952699803,66cyclictest10805-21/usr/sbin/munin07:44:031
2952699803,66cyclictest10805-21/usr/sbin/munin07:44:031
2952699803,38cyclictest9501-21fschecks_count07:39:591
2952699803,38cyclictest9501-21fschecks_count07:39:591
2952699803,38cyclictest352-21runrttasks09:55:201
2952699803,38cyclictest352-21runrttasks09:55:201
2952699803,37cyclictest27437-21fschecks_time08:33:531
2952699803,37cyclictest27437-21fschecks_time08:33:531
2952699803,36cyclictest19252-21ssh09:28:331
2952699803,34cyclictest22592-21grep08:18:541
2952699802,39cyclictest31726-21runrttasks11:36:431
2952699802,32cyclictest87-21kswapd012:03:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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