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2026-04-11 - 16:24
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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 Apr 11, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
272409911793,16cyclictest0-21swapper/007:33:280
27240991124,41cyclictest352-21runrttasks09:43:370
272409910937,64cyclictest0-21swapper/009:09:010
27240991082,34cyclictest7564-21grep07:38:570
272409910741,58cyclictest0-21swapper/009:58:250
27240991073,48cyclictest17737-21cat10:23:260
272409910622,8cyclictest0-21swapper/009:58:400
27240991053,26cyclictest24745-21/usr/sbin/munin10:33:550
27256991045,27cyclictest32708-21seq08:58:042
272409910437,60cyclictest27325-21/usr/sbin/munin10:39:290
27240991043,39cyclictest6651-21switchtime10:03:580
27240991043,38cyclictest15753-21/usr/sbin/munin11:14:010
27240991033,44cyclictest3591-21runrttasks10:53:250
27240991033,37cyclictest2086-21ssh09:03:270
27240991033,37cyclictest2086-21ssh09:03:270
27240991033,35cyclictest13405-21/usr/sbin/munin07:58:350
27240991033,33cyclictest14208-21kworker/u17:4+xprtiod10:53:390
27240991033,27cyclictest1109-21apt-get11:43:320
272409910322,30cyclictest3312-21latency_hist07:28:270
272409910322,18cyclictest3297-21unixbench_singl09:04:000
27240991023,44cyclictest14017-21latency_hist09:23:260
27240991023,31cyclictest32129-21ls08:53:580
27240991023,27cyclictest8799-21/usr/sbin/munin10:08:460
27240991023,27cyclictest28277-21latency_hist12:28:270
27240991023,25cyclictest13540-21acpi12:03:340
27240991013,41cyclictest7924-21grep10:59:010
27240991013,37cyclictest11936-21df07:53:440
27240991013,37cyclictest11936-21df07:53:440
27240991013,34cyclictest20272-21/usr/sbin/munin09:33:530
27240991013,32cyclictest31007-21cstates11:38:400
27240991013,25cyclictest32483-21cat07:18:260
27240991012,29cyclictest14576-21fschecks_time09:23:460
27240991012,27cyclictest5297-21cut11:48:560
27240991004,35cyclictest15260-21fschecks_time08:03:460
272409910038,56cyclictest0-21swapper/011:13:230
27240991003,27cyclictest10821-21unixbench_multi11:03:590
27240991003,27cyclictest10821-21unixbench_multi11:03:590
27240991002,29cyclictest19217-21unixbench_singl08:14:020
27240991002,29cyclictest19217-21unixbench_singl08:14:020
2725699993,25cyclictest6957-21ssh11:52:322
27248999942,33cyclictest1911-21diskmemload10:09:161
27240999938,54cyclictest0-21swapper/012:14:010
2724099993,34cyclictest20823-21unixbench_singl08:18:590
2724099993,29cyclictest28229-21grep11:33:450
2724099993,29cyclictest28229-21grep11:33:450
2724099993,21cyclictest21070-21/usr/sbin/munin10:28:340
27240999833,7cyclictest0-21swapper/009:43:240
27240999833,7cyclictest0-21swapper/009:43:240
2724099983,31cyclictest22197-21fschecks_count11:23:470
2724099983,31cyclictest22197-21fschecks_count11:23:470
2724099983,30cyclictest32035-21ls09:53:260
2724099973,38cyclictest8536-21/usr/sbin/munin07:43:470
2724099973,36cyclictest30616-21fschecks_time10:43:470
2724099973,36cyclictest30616-21fschecks_time10:43:470
2724099973,36cyclictest18157-21latency_hist08:13:270
2724099973,36cyclictest18157-21latency_hist08:13:270
2724099973,29cyclictest11832-21/usr/sbin/munin10:13:450
2724099973,29cyclictest11832-21/usr/sbin/munin10:13:450
2725699962,68cyclictest27347-21apt-get10:38:472
2724099965,37cyclictest18083-21apt-get10:24:050
2724099965,37cyclictest18083-21apt-get10:24:050
2724099964,35cyclictest5759-21chrt07:34:410
2724099964,29cyclictest27227-21cyclictest07:03:270
2724099963,35cyclictest8562-21fschecks_time09:13:470
2724099963,35cyclictest28440-21fschecks_time08:43:470
2724099963,35cyclictest28440-21fschecks_time08:43:470
2724099963,34cyclictest30039-21ps07:08:570
2724099963,34cyclictest10388-21latency_hist11:58:260
2724099963,34cyclictest10388-21latency_hist11:58:260
2724099963,33cyclictest25688-21ssh11:28:570
2724099963,24cyclictest22669-21taskset12:18:440
2724099962,32cyclictest24753-21cpu08:33:400
2724099962,32cyclictest24753-21cpu08:33:400
27240999622,11cyclictest0-21swapper/011:58:560
2725699952,40cyclictest23784-21load09:38:512
2725699952,40cyclictest23784-21load09:38:512
27240999538,9cyclictest18660-21rm09:29:510
27240999528,9cyclictest0-21swapper/008:23:460
27240999521,20cyclictest23845-21ls08:29:000
2725699942,66cyclictest1109-21apt-get11:43:372
2725699942,59cyclictest18979-21apt-get11:18:392
2724099943,37cyclictest19682-21if_err_eth011:19:440
2724099943,35cyclictest16498-21/usr/sbin/munin12:08:520
2724099943,31cyclictest31337-21latency_hist08:53:270
27240999427,8cyclictest0-21swapper/007:08:270
2724099942,30cyclictest27576-21unixbench_multi08:40:300
2724099942,30cyclictest27576-21unixbench_multi08:40:300
2724099934,33cyclictest32688-21/usr/sbin/munin07:18:460
2724099932,30cyclictest11738-21latency_hist07:53:280
27256999271,13cyclictest19943-21modprobe09:33:232
27256999253,30cyclictest29024-21sh12:28:532
27256999245,40cyclictest2520-21latency_hist09:58:272
2725699913,30cyclictest22504-21wc12:18:392
2724099913,29cyclictest29508-21awk12:29:010
198562910,6sleep2371rcuc/208:18:332
2725699906,13cyclictest3884-21apt-get10:53:392
27248999056,25cyclictest6676-21sh07:38:241
27256998961,21cyclictest521-21cron10:48:242
27256998961,21cyclictest521-21cron10:48:242
2725699895,38cyclictest1302-21latency10:48:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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