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2026-07-20 - 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 Mon Jul 20, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26014991043,92cyclictest23437-21apt-get08:26:521
260239910185,11cyclictest26000-21cyclictest07:36:402
260239910185,11cyclictest26000-21cyclictest07:36:402
260149910146,48cyclictest10277-21munin-plugin-st07:46:401
2601499986,81cyclictest25946-21apt-get10:31:541
26014999728,11cyclictest0-21swapper/108:46:501
26014999635,53cyclictest0-21swapper/107:27:071
26014999635,53cyclictest0-21swapper/107:27:071
26014999627,11cyclictest0-21swapper/111:47:101
26009999574,15cyclictest20010-21gpgv08:16:420
26023999473,11cyclictest0-21swapper/208:07:002
26023999472,11cyclictest0-21swapper/208:57:152
26023999433,32cyclictest39-21ksoftirqd/207:10:342
26014999470,18cyclictest991-21diskmemload10:21:591
2601499943,38cyclictest8439-21ps10:02:081
2601499943,37cyclictest24612-21mailstats11:22:121
2601499943,37cyclictest24612-21mailstats11:22:121
26014999420,12cyclictest0-21swapper/111:57:001
26009999472,11cyclictest0-21swapper/009:15:520
26023999375,13cyclictest26000-21cyclictest11:31:372
2601499934,33cyclictest18475-21cstates12:06:541
26014999341,44cyclictest11761-21latency_hist11:01:411
26014999341,44cyclictest11761-21latency_hist11:01:411
2601499933,37cyclictest13593-21latency_hist07:56:401
26014999332,55cyclictest0-21swapper/107:37:001
26009999376,11cyclictest26814-21ssh11:26:410
26023999271,12cyclictest0-21swapper/207:42:142
2601499926,74cyclictest27509-21apt-get12:21:531
26014999265,17cyclictest0-21swapper/110:15:171
2601499923,66cyclictest29175-21apt-get10:36:591
2601499923,40cyclictest5708-21latency_hist10:51:391
2601499923,37cyclictest2459-21/usr/sbin/munin07:22:121
26023999169,12cyclictest0-21swapper/208:51:402
26023999169,12cyclictest0-21swapper/207:31:412
26023999168,13cyclictest0-21swapper/208:21:562
26023999148,12cyclictest181rcu_preempt09:27:142
2602399913,62cyclictest29175-21apt-get10:37:012
2601499914,35cyclictest6965-21cron09:06:371
2601499914,34cyclictest25623-21if_eth009:37:011
2601499914,34cyclictest17903-21/usr/sbin/munin11:11:481
2601499913,40cyclictest2084-21fschecks_time09:52:001
2601499913,37cyclictest25744-21latency_hist10:31:421
2601499913,36cyclictest32174-21cstates08:51:561
26014999132,53cyclictest0-21swapper/108:06:381
26014999128,7cyclictest0-21swapper/108:22:151
26009999171,12cyclictest0-21swapper/009:42:160
26023999074,10cyclictest26783-21ntp_kernel_pll_10:32:512
26023999073,10cyclictest0-21swapper/207:52:102
2601499903,40cyclictest13238-21sh11:02:531
2601499903,35cyclictest30339-21sort07:07:001
26014999029,52cyclictest0-21swapper/108:07:151
26014999029,10cyclictest0-21swapper/112:21:411
26014999029,10cyclictest0-21swapper/112:21:411
2601499902,36cyclictest19494-21timerwakeupswit08:12:151
2601499902,34cyclictest16728-21ssh10:16:491
2601499902,34cyclictest16728-21ssh10:16:491
2601499902,33cyclictest18170-21latency_hist12:06:401
2601499902,33cyclictest18170-21latency_hist12:06:401
2601499902,31cyclictest10288-21/usr/sbin/munin09:12:041
26023998969,10cyclictest0-21swapper/207:03:002
2601499894,28cyclictest4988-21fschecks_count09:56:591
2601499894,28cyclictest4988-21fschecks_count09:56:591
2601499893,36cyclictest8753-21latency_hist10:56:401
2601499892,40cyclictest23760-21latency_hist11:21:411
2601499892,37cyclictest31945-21fschecks_time07:11:581
2601499892,30cyclictest28096-21grep08:37:141
2601499892,30cyclictest28096-21grep08:37:141
26009998970,11cyclictest0-21swapper/007:42:010
26009998910,40cyclictest15-21ksoftirqd/008:26:380
2601499882,33cyclictest26684-21grep06:57:051
2601499882,33cyclictest26684-21grep06:57:051
26009998866,12cyclictest0-21swapper/009:37:000
247742888,56sleep124811-21fschecks_time06:52:061
26014998735,44cyclictest0-21swapper/111:52:051
26014998735,44cyclictest0-21swapper/111:52:051
2601499873,32cyclictest16549-21fschecks_time09:22:011
2601499873,31cyclictest352-21runrttasks08:32:151
2601499873,31cyclictest352-21runrttasks08:32:151
2601499873,31cyclictest20463-21/usr/sbin/munin08:16:491
2601499873,30cyclictest20172-21timerandwakeup09:27:141
26014998725,13cyclictest0-21swapper/108:57:041
2601499872,35cyclictest25045-21ssh09:36:401
2601499872,34cyclictest13432-21munin-run10:11:381
2601499872,33cyclictest29483-21head07:03:051
2601499872,32cyclictest1383-21grep07:17:061
26014998718,20cyclictest15557-21sh11:07:091
26014998718,20cyclictest15557-21sh11:07:091
26009998768,13cyclictest20976-21runrttasks11:16:560
2601499865,47cyclictest32390-21apt-get10:42:191
2601499864,35cyclictest27640-21sendmail_mailtr11:27:111
2601499863,34cyclictest6349-21awk07:32:111
2601499863,34cyclictest6349-21awk07:32:111
2601499863,30cyclictest10787-21fschecks_time07:47:001
2601499862,30cyclictest29016-21fschecks_time08:42:001
2601499862,29cyclictest28486-21fschecks_count09:41:591
26009998666,11cyclictest0-21swapper/007:21:400
26009998660,18cyclictest1170-21latency_hist08:56:410
26009998651,26cyclictest4315-21cut07:26:590
26009998651,26cyclictest4315-21cut07:26:590
2462828618,36sleep20-21swapper/206:51:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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