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2026-06-21 - 18:58
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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 Sun Jun 21, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15292210190,4sleep015295-21cut06:58:410
153679910440,56cyclictest0-21swapper/112:08:371
15338991042,94cyclictest0-21swapper/009:18:500
15338991042,61cyclictest18925-21find10:39:110
153389910353,44cyclictest2374-21systemd-journal11:17:570
153389910341,55cyclictest31602-21ssh11:01:020
153389910241,53cyclictest0-21swapper/008:38:370
15338991013,90cyclictest0-21swapper/008:18:490
15367999942,49cyclictest0-21swapper/110:08:541
15338999940,51cyclictest0-21swapper/011:54:110
15338999940,51cyclictest0-21swapper/011:54:110
15377999842,33cyclictest19930-21latency_hist09:48:392
15367999826,13cyclictest0-21swapper/110:03:411
15338999837,54cyclictest0-21swapper/011:28:450
1533899983,64cyclictest10434-21sh11:19:300
1533899983,64cyclictest10434-21sh11:19:300
15338999833,45cyclictest16693-21rm09:42:560
15338999833,45cyclictest16693-21rm09:42:560
1533899982,66cyclictest31050-21taskset09:12:470
1533899982,66cyclictest31050-21taskset09:12:470
15367999738,11cyclictest0-21swapper/108:38:591
15367999738,11cyclictest0-21swapper/108:38:591
1536799973,34cyclictest26847-21latency_hist11:48:401
1536799973,34cyclictest26847-21latency_hist11:48:401
15367999730,14cyclictest0-21swapper/110:34:141
15367999730,14cyclictest0-21swapper/110:34:141
1533899973,60cyclictest8839-21runrttasks08:14:120
1533899973,60cyclictest8839-21runrttasks08:14:120
15338999735,54cyclictest0-21swapper/007:18:370
15338999734,53cyclictest0-21swapper/009:59:040
1533899972,51cyclictest9471-21tune2fs10:23:590
1533899972,51cyclictest9471-21tune2fs10:23:590
1536799963,38cyclictest352-21runrttasks11:00:221
1536799963,33cyclictest6870-21sort12:09:311
15338999632,57cyclictest0-21swapper/009:30:060
15338999632,57cyclictest0-21swapper/009:30:060
15338999631,59cyclictest0-21swapper/010:23:400
15338999611,77cyclictest156922chrt06:59:220
15338999611,77cyclictest156922chrt06:59:220
15367999546,43cyclictest0-21swapper/111:19:011
15367999546,43cyclictest0-21swapper/111:19:011
1536799954,37cyclictest28912-21fschecks_count09:08:581
1536799954,37cyclictest28912-21fschecks_count09:08:581
1536799954,37cyclictest1-21systemd08:28:381
15367999534,9cyclictest0-21swapper/110:44:061
15367999531,9cyclictest0-21swapper/109:28:381
15367999531,9cyclictest0-21swapper/109:28:381
15338999538,52cyclictest0-21swapper/009:28:390
15338999538,52cyclictest0-21swapper/009:28:390
1533899952,60cyclictest23416-21ssh10:48:000
15338999522,63cyclictest161ktimers/007:38:510
15367999441,45cyclictest3797-21latency11:09:031
15367999441,45cyclictest3797-21latency11:09:031
15367999438,49cyclictest15730-21fschecks_time12:23:591
15367999437,49cyclictest0-21swapper/109:34:531
1536799943,40cyclictest6532-21fschecks_count11:13:581
1536799943,33cyclictest8445-21/usr/sbin/munin09:30:121
1536799943,33cyclictest8445-21/usr/sbin/munin09:30:121
15367999433,11cyclictest0-21swapper/110:13:571
1536799942,34cyclictest29640-21/usr/sbin/munin10:04:531
15338999440,47cyclictest0-21swapper/011:59:120
1533899943,81cyclictest26920-21ssh11:48:410
1533899943,78cyclictest0-21swapper/010:48:520
1533899942,83cyclictest26188-21netstat09:04:030
150452946,16sleep10-21swapper/106:58:181
1536799934,35cyclictest6670-21grep08:08:591
1536799934,35cyclictest6670-21grep08:08:591
1536799934,35cyclictest12830-21ssh11:24:091
1536799934,35cyclictest12830-21ssh11:24:091
1536799934,32cyclictest31648-21/usr/sbin/munin09:14:001
15367999336,12cyclictest0-21swapper/112:14:021
1536799933,41cyclictest2499-21grep09:19:001
15367999334,13cyclictest0-21swapper/108:58:391
15367999334,13cyclictest0-21swapper/108:58:391
1536799933,36cyclictest22268-21latency_hist07:18:401
1536799933,36cyclictest14397-21rm09:38:551
1536799933,36cyclictest14397-21rm09:38:551
1536799933,33cyclictest28333-21mailstats07:35:141
15367999331,10cyclictest0-21swapper/108:49:101
1536799932,46cyclictest13012-21switchtime10:29:131
15367999324,12cyclictest0-21swapper/107:24:131
15367999324,12cyclictest0-21swapper/107:24:131
1536799932,34cyclictest440-21cpu11:58:521
15338999334,48cyclictest0-21swapper/012:03:510
1536799923,38cyclictest17233-21munin-node07:18:481
1536799923,35cyclictest3045-21idleruntime-cro11:08:361
1536799923,34cyclictest8269-21fschecks_count08:13:581
1536799923,34cyclictest8269-21fschecks_count08:13:581
15367999225,12cyclictest0-21swapper/107:54:001
1536799922,38cyclictest24992-21unixbench_multi10:49:141
1536799922,34cyclictest25633-21/usr/sbin/munin09:04:121
1536799922,29cyclictest3848-21wc07:59:091
1533899923,57cyclictest31436-21/usr/sbin/munin07:44:090
1533899923,57cyclictest31436-21/usr/sbin/munin07:44:090
15338999229,55cyclictest0-21swapper/009:38:400
1533899922,58cyclictest5781-21rm11:13:040
1533899922,58cyclictest5781-21rm11:13:040
1536799914,36cyclictest352-21runrttasks08:33:381
1536799914,33cyclictest9186-21/usr/sbin/munin10:24:011
1536799914,33cyclictest9186-21/usr/sbin/munin10:24:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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