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2026-04-27 - 17:22
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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 Apr 27, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1189699122106,10cyclictest16029-21sshd07:13:080
11902991074,48cyclictest31559-21ssh10:17:361
11902999750,40cyclictest28524-21ssh11:07:211
11896999353,26cyclictest181rcu_preempt11:52:370
11902999249,35cyclictest0-21swapper/109:12:241
11902999242,42cyclictest0-21swapper/111:37:491
1190299914,34cyclictest18898-21ssh09:02:221
1190299914,34cyclictest18898-21ssh09:02:221
11902999137,47cyclictest17106-21sh10:47:421
1190299913,34cyclictest4742-21/usr/sbin/munin09:32:301
11902999034,48cyclictest0-21swapper/109:42:481
11902999034,48cyclictest0-21swapper/109:42:481
1190299903,35cyclictest13973-21latency_hist08:47:211
1190299903,34cyclictest22359-21taskset10:56:481
1190299903,33cyclictest8039-21/usr/sbin/munin10:32:361
1190299903,33cyclictest24374-21if_eth007:37:421
1190299903,22cyclictest17405-21ssh11:42:351
1190299903,22cyclictest17405-21ssh11:42:351
1190299902,35cyclictest6651-21grep08:22:491
1090329011,52sleep210913-21/usr/sbin/munin06:57:552
1190299893,35cyclictest87-21kswapd009:57:371
11896998964,12cyclictest181rcu_preempt07:37:560
1190299884,31cyclictest6577-21grep11:22:571
1190299884,31cyclictest6577-21grep11:22:571
11902998835,45cyclictest0-21swapper/107:12:231
1190299883,36cyclictest4533-21cpu08:17:371
1190299883,36cyclictest14585-21latency08:47:461
1190299883,35cyclictest27118-21latency_hist07:47:221
1190299883,34cyclictest11860-21/usr/sbin/munin12:27:411
11902998832,50cyclictest0-21swapper/109:06:141
11902998745,33cyclictest0-21swapper/110:37:231
11902998745,33cyclictest0-21swapper/110:37:231
1190299874,31cyclictest20153-21grep07:22:551
1190299874,28cyclictest28268-21/usr/sbin/munin09:17:551
11902998734,47cyclictest0-21swapper/111:47:411
1190299873,37cyclictest8730-21fschecks_time11:27:431
1190299873,34cyclictest7652-21modprobe10:32:191
1190299873,34cyclictest13438-21modprobe07:07:191
1190299873,32cyclictest29107-21fschecks_time11:07:411
1190299873,32cyclictest17797-21fschecks_count07:17:431
1190299873,32cyclictest12177-21taskset11:32:531
1190299873,32cyclictest12177-21taskset11:32:531
11902998727,9cyclictest0-21swapper/111:53:181
1190299872,33cyclictest31841-21ntpq09:22:481
1190299872,33cyclictest29156-21ntpq10:12:481
11902998720,13cyclictest0-21swapper/109:17:211
11896998759,20cyclictest17307-21latency_hist08:57:220
11896998757,23cyclictest11888-21cyclictest09:04:140
1189699874,34cyclictest15579-21grep08:52:190
1190299865,32cyclictest32333-21latency_hist12:07:221
1190299863,34cyclictest8575-21timerwakeupswit08:27:541
1190299863,34cyclictest8575-21timerwakeupswit08:27:541
1190299863,34cyclictest6224-21fschecks_time12:17:391
1190299863,30cyclictest16052-21tune2fs08:52:411
11902998630,47cyclictest0-21swapper/111:57:551
1190299862,35cyclictest11828-21timerwakeupswit08:37:561
1190299862,35cyclictest11828-21timerwakeupswit08:37:561
1190299854,29cyclictest27479-21tune2fs07:47:421
1190299853,36cyclictest352-21runrttasks10:42:571
1190299853,36cyclictest30425-21latency_hist07:57:221
1190299853,36cyclictest30425-21latency_hist07:57:221
1190299853,36cyclictest22424-21/usr/sbin/munin07:32:531
1190299853,35cyclictest7702-21/usr/sbin/munin09:37:371
1190299853,35cyclictest16921-21timerwakeupswit07:13:541
1190299853,34cyclictest9138-21fschecks_count12:22:401
1190299853,34cyclictest25804-21fschecks_count10:07:411
1190299853,34cyclictest25804-21fschecks_count10:07:411
1190299853,34cyclictest21012-21fschecks_count07:27:421
1190299853,33cyclictest30893-21cat07:57:441
1190299853,33cyclictest30893-21cat07:57:441
1190299853,33cyclictest2974-21/usr/sbin/munin12:12:531
1190299853,33cyclictest2974-21/usr/sbin/munin12:12:531
1190299853,33cyclictest13938-21fschecks_time09:47:401
1190299853,33cyclictest1334-21cpuspeed08:07:371
11896998567,13cyclictest18808-21diskmemload09:50:490
1190299844,34cyclictest3425-21sed08:12:481
1190299843,34cyclictest16687-21cpu09:52:361
1190299843,34cyclictest16687-21cpu09:52:361
1190299843,32cyclictest25516-21latency_hist11:02:221
1190299843,32cyclictest25516-21latency_hist11:02:221
1190299843,31cyclictest3594-21sort11:18:271
1190299842,35cyclictest730-21mailstats12:07:531
11896998463,15cyclictest8081-21kernelversion08:27:440
11896998463,15cyclictest8081-21kernelversion08:27:440
11896998456,19cyclictest22338-21latency_hist07:32:230
11906998360,15cyclictest12696-21cstates08:42:392
11906998353,20cyclictest25275-21sh11:01:412
11906998353,20cyclictest25275-21sh11:01:412
11906998349,23cyclictest7474-21munin-run08:27:202
1190299834,33cyclictest9475-21cstates08:32:381
1190299834,33cyclictest9475-21cstates08:32:381
1190299833,34cyclictest23041-21latency10:02:441
1190299833,34cyclictest23041-21latency10:02:441
1190299833,33cyclictest277-21dbus-daemon11:17:201
1190299833,30cyclictest4513-21latency_hist09:32:221
1190299833,26cyclictest11903-21cat07:02:241
1190299832,31cyclictest2009-21/usr/sbin/munin10:22:421
11896998352,9cyclictest181rcu_preempt09:52:530
11896998352,9cyclictest181rcu_preempt09:52:530
11896998352,22cyclictest5317-21latency_hist11:22:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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