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2026-06-10 - 00:19
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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 Jun 09, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
950125490,10sleep016483-1kworker/0:2H+mmc_complete06:54:480
109749910892,9cyclictest0-21swapper/212:19:282
109749910052,14cyclictest181rcu_preempt10:10:022
1097499963,69cyclictest10737-21apt-get11:29:432
10974999456,13cyclictest181rcu_preempt11:27:402
99322937,55sleep210023-21/usr/sbin/munin06:56:102
10974999053,13cyclictest181rcu_preempt07:06:592
10965999060,18cyclictest2073-21latency_hist12:09:290
10965999060,18cyclictest2073-21latency_hist12:09:290
10974998950,17cyclictest181rcu_preempt08:39:282
10974998832,13cyclictest10952-21cyclictest10:55:332
10974998832,13cyclictest10952-21cyclictest10:55:332
10974998760,11cyclictest181rcu_preempt06:59:572
10974998736,10cyclictest181rcu_preempt10:39:282
1098099853,39cyclictest25911-21taskset11:54:473
1098099853,39cyclictest25911-21taskset11:54:473
10974998551,14cyclictest30340-21ssh09:19:322
10965998554,21cyclictest27912-21latency_hist07:49:290
10974998464,14cyclictest17883-21diskmemload11:34:552
10974998454,20cyclictest19037-21threads07:20:012
10974998451,17cyclictest18953-21/usr/sbin/munin09:54:482
10965998421,36cyclictest0-21swapper/011:09:260
10974998354,12cyclictest181rcu_preempt10:49:422
10974998354,12cyclictest181rcu_preempt10:49:422
10974998328,11cyclictest181rcu_preempt12:12:222
10965998368,9cyclictest17883-21diskmemload12:20:210
10974998258,9cyclictest181rcu_preempt12:04:422
10974998258,9cyclictest181rcu_preempt12:04:422
10974998258,17cyclictest23880-21latency_hist09:09:302
1097499823,30cyclictest1270-21latency_hist10:19:292
10965998263,13cyclictest12138-21netstat08:39:530
1098099813,34cyclictest26315-21chrt11:00:173
1098099812,40cyclictest10664-21chrt08:34:593
10974998160,15cyclictest10589-21sh09:39:542
10974998157,9cyclictest181rcu_preempt11:13:432
10974998157,9cyclictest181rcu_preempt11:13:432
10974998156,10cyclictest181rcu_preempt07:24:352
10974998156,10cyclictest181rcu_preempt07:24:352
10974998136,8cyclictest181rcu_preempt07:29:432
10974998136,8cyclictest181rcu_preempt07:29:432
10965998151,20cyclictest19720-21latency_hist11:44:300
10965998151,20cyclictest19720-21latency_hist11:44:300
10974998053,10cyclictest181rcu_preempt09:37:012
10974998053,10cyclictest181rcu_preempt09:37:012
10974998052,17cyclictest28500-21sh11:59:292
10974998052,17cyclictest28500-21sh11:59:292
10974998036,10cyclictest181rcu_preempt09:25:522
10974998035,13cyclictest181rcu_preempt09:31:202
1097499802,51cyclictest30812-21unin-run11:09:262
10974998013,32cyclictest13725-21memory08:44:522
10970998060,14cyclictest9250-21sh10:32:241
10970998060,14cyclictest9250-21sh10:32:241
10970998029,36cyclictest26072-21modprobe07:44:251
1098099793,32cyclictest24865-21chrt10:59:283
1098099793,32cyclictest24865-21chrt10:59:283
10974997956,8cyclictest181rcu_preempt09:50:232
10974997950,20cyclictest25044-21latency09:10:222
1097499793,48cyclictest13316-21fschecks_time09:44:492
10974997934,12cyclictest181rcu_preempt10:24:482
10970997963,10cyclictest11204-21ssh11:30:271
10965997955,15cyclictest17883-21diskmemload09:24:300
1098099782,38cyclictest32138-21taskset10:15:333
1098099782,33cyclictest5426-21chrt10:25:063
1098099782,32cyclictest13986-21taskset12:29:253
10974997854,9cyclictest181rcu_preempt11:49:362
10974997849,20cyclictest26644-21sh11:01:152
10974997844,12cyclictest181rcu_preempt07:59:452
10974997844,12cyclictest181rcu_preempt07:59:452
10974997838,7cyclictest181rcu_preempt08:59:522
10974997838,7cyclictest181rcu_preempt08:59:522
10970997863,10cyclictest6853-21ssh12:16:461
10970997862,10cyclictest28386-21/usr/sbin/munin07:49:511
10970997860,11cyclictest26215-21ssh11:54:531
10970997860,11cyclictest26215-21ssh11:54:531
10965997857,15cyclictest5021-21latency_hist08:19:280
10965997841,28cyclictest26865-21kworker/u17:3+nfsiod10:55:550
10965997841,28cyclictest26865-21kworker/u17:3+nfsiod10:55:550
1098099774,52cyclictest0-21swapper/312:19:423
10974997743,10cyclictest181rcu_preempt12:20:432
10965997749,8cyclictest181rcu_preempt11:25:170
10974997629,10cyclictest181rcu_preempt08:10:032
10974997625,9cyclictest0-21swapper/210:02:012
10970997654,14cyclictest24860-21sh10:04:351
10970997653,17cyclictest7763-21fschecks_count11:24:471
1098099753,28cyclictest1403-21chrt11:14:283
1098099753,28cyclictest1403-21chrt11:14:283
10974997551,9cyclictest181rcu_preempt07:54:432
10974997551,18cyclictest10084-21sh10:34:292
10974997551,18cyclictest10084-21sh10:34:292
10974997540,12cyclictest181rcu_preempt08:19:372
10974997537,13cyclictest181rcu_preempt10:41:172
10974997534,17cyclictest181rcu_preempt07:49:572
10974997534,10cyclictest181rcu_preempt08:51:292
10974997531,13cyclictest181rcu_preempt09:17:222
1097499752,38cyclictest27771-21sort10:09:292
10974997516,24cyclictest0-21swapper/208:09:292
10970997558,11cyclictest20210-21unixbench_multi10:50:031
10970997558,11cyclictest20210-21unixbench_multi10:50:031
10970997555,14cyclictest17135-21processes08:55:171
10970997554,15cyclictest30097-21sh09:19:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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