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2026-05-04 - 08:40
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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 May 04, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31692212513,77sleep031730-21grep18:57:190
561991192,81cyclictest30100-21apt-get22:32:081
31518210919,42sleep20-21swapper/218:57:052
3173421089,73sleep131789-21/usr/sbin/munin18:57:201
561991023,69cyclictest19645-21apt-get19:57:081
5679910132,26cyclictest14946-21runrttasks22:59:132
5619910070,9cyclictest181rcu_preempt23:27:171
5619910070,9cyclictest181rcu_preempt23:27:171
561999547,9cyclictest181rcu_preempt20:52:141
567999444,39cyclictest31206-21apt-get20:32:042
561999452,14cyclictest181rcu_preempt00:27:271
561999452,14cyclictest181rcu_preempt00:27:271
561999447,10cyclictest181rcu_preempt00:06:561
54999943,67cyclictest30663-21apt-get22:32:090
561999348,12cyclictest181rcu_preempt00:26:541
56199933,63cyclictest4119-21apt-get19:12:101
56199933,63cyclictest4119-21apt-get19:12:101
561999331,31cyclictest0-21swapper/121:07:281
567999235,19cyclictest8184-21diskmemload23:26:202
567999228,25cyclictest352-21runrttasks23:27:052
567999228,25cyclictest352-21runrttasks23:27:052
561999263,19cyclictest3679-21sh21:47:171
561999252,25cyclictest181rcu_preempt19:22:181
567999129,21cyclictest12083-21seq23:48:012
549999138,15cyclictest0-21swapper/021:47:280
567999031,22cyclictest27409-21rm00:13:502
567999030,24cyclictest24398-21/usr/sbin/munin22:22:172
567999029,26cyclictest2806-21ssh21:46:192
567999026,32cyclictest8184-21diskmemload22:42:192
567999026,32cyclictest8184-21diskmemload22:42:192
567999026,25cyclictest16002-21ssh22:07:222
561999065,17cyclictest18704-21fschecks_time22:12:141
561999063,8cyclictest181rcu_preempt21:32:311
57499893,49cyclictest0-21swapper/321:12:213
567998931,46cyclictest0-21swapper/222:17:062
567998928,28cyclictest22756-21sh00:06:572
567998928,21cyclictest8020-21seq21:54:012
567998926,24cyclictest20618-21/usr/sbin/munin00:02:292
567998925,25cyclictest7841-21/usr/sbin/munin19:22:262
561998952,14cyclictest181rcu_preempt23:32:281
561998950,13cyclictest181rcu_preempt20:51:551
561998950,13cyclictest181rcu_preempt20:51:551
561998941,12cyclictest181rcu_preempt20:42:211
567998872,9cyclictest0-21swapper/221:12:312
567998830,23cyclictest30884-21seq20:31:422
567998830,20cyclictest32375-21ssh22:34:132
567998826,23cyclictest18504-21ssh23:59:072
567998821,28cyclictest10757-21runrttasks19:28:162
561998846,13cyclictest181rcu_preempt19:41:541
561998845,10cyclictest181rcu_preempt22:50:551
567998730,25cyclictest18666-21seq23:06:142
567998729,24cyclictest19676-21snmpd19:36:462
567998728,24cyclictest29269-21seq20:26:362
567998725,25cyclictest29383-21rm21:36:392
561998752,13cyclictest181rcu_preempt19:52:211
561998746,16cyclictest181rcu_preempt23:21:561
57499865,65cyclictest30715-21chrt22:32:133
567998628,27cyclictest14155-21seq19:40:142
567998628,23cyclictest8079-21seq21:00:542
567998622,28cyclictest0-21swapper/221:27:192
567998622,28cyclictest0-21swapper/221:27:192
561998646,9cyclictest181rcu_preempt20:07:111
561998640,8cyclictest181rcu_preempt22:40:281
561998634,14cyclictest21535-21ssh22:17:091
561998618,23cyclictest0-21swapper/119:27:491
549998663,16cyclictest300-21rs:main0
567998568,12cyclictest536-21cyclictest21:47:302
567998529,20cyclictest13906-21ssh21:11:082
567998528,25cyclictest9925-21ssh23:45:212
567998528,23cyclictest29495-21grep00:17:242
567998528,23cyclictest29495-21grep00:17:242
567998528,20cyclictest3809-21seq00:28:252
567998528,20cyclictest3809-21seq00:28:252
567998526,25cyclictest17343-21taskset19:49:562
567998526,25cyclictest17343-21taskset19:49:562
567998525,23cyclictest10632-21ssh22:52:182
567998525,23cyclictest10632-21ssh22:52:182
567998525,22cyclictest6288-21seq20:53:292
567998524,30cyclictest18351-21ntp_kernel_pll_21:17:212
567998524,30cyclictest18351-21ntp_kernel_pll_21:17:212
567998522,31cyclictest352-21runrttasks22:03:312
567998520,28cyclictest6550-21/usr/sbin/munin19:17:372
567998520,28cyclictest6550-21/usr/sbin/munin19:17:372
561998554,9cyclictest181rcu_preempt22:57:031
561998532,15cyclictest0-21swapper/121:26:551
567998427,22cyclictest3161-21seq20:45:032
567998427,19cyclictest1446-21seq20:38:432
567998426,22cyclictest4056-21seq19:11:182
567998426,22cyclictest19092-21seq19:56:222
567998426,18cyclictest24135-21seq20:11:012
567998423,38cyclictest352-21runrttasks21:41:082
567998423,38cyclictest352-21runrttasks21:41:082
567998423,27cyclictest0-21swapper/223:21:332
567998423,26cyclictest0-21swapper/221:22:232
561998446,10cyclictest181rcu_preempt23:37:261
561998445,10cyclictest181rcu_preempt21:57:281
561998444,16cyclictest181rcu_preempt23:47:211
567998329,23cyclictest15861-21seq19:46:342
567998327,22cyclictest8745-21ssh22:48:442
567998322,29cyclictest27383-21/usr/sbin/munin22:27:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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