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2026-05-22 - 21:53
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Fri May 22, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
143269913470,58cyclictest21453-21diskmemload09:16:510
14332991313,86cyclictest23924-21ssh11:45:551
143269912860,11cyclictest0-21swapper/009:35:430
143329911743,37cyclictest0-21swapper/108:10:411
143329911183,22cyclictest0-21swapper/109:40:591
143399910856,10cyclictest17866-21sh11:35:542
143329910810,79cyclictest13395-21apt-get08:36:111
14332991043,28cyclictest25941-21seq07:35:271
14332991043,28cyclictest25941-21seq07:35:271
143399910042,21cyclictest5235-21cut09:26:382
143399910042,21cyclictest5235-21cut09:26:382
143329910030,37cyclictest0-21swapper/110:35:541
1362229918,40sleep10-21swapper/106:56:261
1362229918,40sleep10-21swapper/106:56:261
14332999835,39cyclictest0-21swapper/111:22:341
14326999876,15cyclictest14314-21cyclictest09:06:050
1320429618,47sleep30-21swapper/306:56:113
1320429618,47sleep30-21swapper/306:56:113
1433299952,29cyclictest352-21runrttasks08:42:581
14332999519,59cyclictest30963-21apt-get09:15:561
1433299947,62cyclictest32371-21ssh10:11:021
14326999459,7cyclictest181rcu_preempt11:49:140
14326999370,17cyclictest544-21cron07:50:390
1433299923,33cyclictest880-21/usr/sbin/munin12:01:071
14326999261,9cyclictest2490-21kworker/u17:410:15:390
14332999142,43cyclictest23339-21latency_hist11:45:411
14326999170,7cyclictest181rcu_preempt11:40:590
14326999165,12cyclictest0-21swapper/008:26:020
14326999165,12cyclictest0-21swapper/008:26:020
14339999075,8cyclictest0-21swapper/207:56:172
14339999067,10cyclictest0-21swapper/208:20:432
14332999051,33cyclictest5012-21sh09:26:281
14332999051,33cyclictest5012-21sh09:26:281
1433299903,30cyclictest26705-21/usr/sbin/munin10:01:071
14326999062,20cyclictest11686-21latency_hist11:25:410
14326999050,30cyclictest0-21swapper/009:50:420
14339998969,9cyclictest0-21swapper/207:41:052
14339998964,15cyclictest14314-21cyclictest09:16:392
1433299893,7cyclictest0-21swapper/112:05:531
14326998953,8cyclictest181rcu_preempt07:40:410
14326998953,8cyclictest181rcu_preempt07:40:410
1433299883,70cyclictest0-21swapper/111:35:501
14326998872,8cyclictest0-21swapper/010:41:020
14326998771,10cyclictest28762-21cron10:05:380
14339998663,15cyclictest14314-21cyclictest11:26:022
1433299863,36cyclictest31742-21awk07:51:121
1433299863,35cyclictest850-21expr11:06:141
14326998671,10cyclictest16389-21kworker/u19:1-nfsiod09:05:230
14339998572,9cyclictest14314-21cyclictest10:55:412
14339998572,9cyclictest14314-21cyclictest10:55:412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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