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2025-12-09 - 23:24
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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 Tue Dec 09, 2025 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
354221247,17sleep00-21swapper/007:06:430
354221247,17sleep00-21swapper/007:06:430
39369912231,58cyclictest0-21swapper/009:33:380
39369911153,53cyclictest26743-21ssh12:33:350
39369910839,62cyclictest0-21swapper/012:28:150
39369910839,62cyclictest0-21swapper/012:28:150
39369910739,62cyclictest0-21swapper/011:43:270
39369910739,62cyclictest0-21swapper/011:43:270
39369910625,73cyclictest0-21swapper/009:43:160
39499910584,10cyclictest0-21swapper/111:53:561
39369910537,62cyclictest355-21runrttasks09:55:190
3936991053,24cyclictest4294-21/usr/sbin/munin11:53:410
39369910418,21cyclictest20249-21diskmemload12:22:350
39499910345,20cyclictest16859-21kworker/u18:0+nfsiod12:29:301
39369910344,52cyclictest15006-21rm09:13:490
39369910342,55cyclictest0-21swapper/009:04:070
3936991023,27cyclictest24193-21sh09:32:100
39369910219,24cyclictest5730-21latency_hist07:13:170
3970991013,41cyclictest20824-21ssh12:23:312
3970991013,41cyclictest20824-21ssh12:23:312
39369910143,51cyclictest0-21swapper/011:58:590
39369910143,51cyclictest0-21swapper/011:58:590
3936991013,27cyclictest27032-21sort10:38:160
39369910039,55cyclictest0-21swapper/010:48:520
39369910039,55cyclictest0-21swapper/010:48:520
3936991002,24cyclictest14544-21chrt12:12:170
393699993,26cyclictest11102-21/usr/sbin/munin07:28:400
393699993,26cyclictest11102-21/usr/sbin/munin07:28:400
393699993,23cyclictest11922-21/usr/sbin/munin11:08:330
393699993,22cyclictest32489-21sh09:48:140
393699993,22cyclictest32489-21sh09:48:140
393699993,21cyclictest5147-21ssh10:56:520
393699992,30cyclictest17169-21grep07:44:060
393699992,30cyclictest17169-21grep07:44:060
3936999843,48cyclictest0-21swapper/007:28:170
3936999838,53cyclictest0-21swapper/009:28:190
393699983,30cyclictest21698-21awk07:58:500
393699982,26cyclictest29369-21ls11:38:520
393699982,26cyclictest29369-21ls11:38:520
3936999742,48cyclictest0-21swapper/010:13:360
3936999742,48cyclictest0-21swapper/010:13:360
3936999733,57cyclictest0-21swapper/011:03:480
3936999733,57cyclictest0-21swapper/011:03:480
393699973,30cyclictest8861-21grep07:18:510
393699973,26cyclictest8146-21fschecks_count08:58:350
393699973,24cyclictest27950-21ssh11:37:440
393699973,23cyclictest30495-21ssh10:43:410
3970999638,52cyclictest25799-21sh10:34:352
3970999629,11cyclictest0-21swapper/207:18:422
3936999645,43cyclictest0-21swapper/008:28:300
393699963,28cyclictest15622-21/usr/sbin/munin11:13:540
393699963,28cyclictest15622-21/usr/sbin/munin11:13:540
393699963,23cyclictest25015-21grep12:29:440
3936999629,62cyclictest0-21swapper/011:28:420
3936999629,58cyclictest0-21swapper/008:48:160
3936999629,58cyclictest0-21swapper/008:48:160
393699962,23cyclictest7110-21runrttasks10:59:500
393699962,23cyclictest16633-21kernelversion10:18:400
393699962,23cyclictest1-21systemd10:13:150
393699953,30cyclictest22637-21/usr/sbin/munin08:03:330
393699952,42cyclictest19694-21cron11:23:130
393699952,22cyclictest17733-21timerandwakeup09:18:580
393699952,21cyclictest13154-21latency07:33:410
3936999437,50cyclictest0-21swapper/007:53:320
393699943,28cyclictest9033-21timerwakeupswit10:03:520
393699942,35cyclictest29389-21sshd10:42:190
393699942,24cyclictest6471-21fschecks_count07:13:390
393699942,24cyclictest26085-21fschecks_count08:13:360
393699942,21cyclictest3582-21taskset11:51:590
7732930,7sleep30-21swapper/310:48:413
7732930,7sleep30-21swapper/310:48:413
3970999339,47cyclictest0-21swapper/210:53:542
3970999325,18cyclictest0-21swapper/211:23:152
393699933,36cyclictest10588-21mailstats12:03:490
393699933,25cyclictest32742-21/usr/sbin/munin09:48:520
393699933,25cyclictest32742-21/usr/sbin/munin09:48:520
393699933,25cyclictest22311-21ssh10:28:580
393699933,24cyclictest22712-21ssh11:28:140
393699932,39cyclictest17542-21rm12:17:570
3970999233,9cyclictest0-21swapper/212:13:502
393699924,20cyclictest17802-21apt-get07:48:240
393699923,25cyclictest14339-21/usr/sbin/munin07:38:400
3936999227,7cyclictest0-21swapper/008:33:510
3936999225,9cyclictest0-21swapper/008:23:300
393699922,34cyclictest6949-21/usr/sbin/munin08:53:500
3936999223,13cyclictest0-21swapper/008:18:360
3970999166,19cyclictest4093-21latency_hist11:53:162
393699913,25cyclictest12832-21/usr/sbin/munin09:09:500
393699913,23cyclictest19197-21fschecks_count10:23:370
3936999123,9cyclictest0-21swapper/009:58:430
3936999123,9cyclictest0-21swapper/009:58:430
393699912,24cyclictest6066-21modprobe08:53:130
393699912,24cyclictest6066-21modprobe08:53:130
29032918,56sleep22932-21/usr/sbin/munin07:03:562
29032918,56sleep22932-21/usr/sbin/munin07:03:562
3970999033,50cyclictest0-21swapper/207:28:462
3970999033,50cyclictest0-21swapper/207:28:462
397099903,30cyclictest5412-21grep11:53:572
3970999031,51cyclictest0-21swapper/209:23:522
3970999030,8cyclictest0-21swapper/207:13:512
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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