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2026-06-26 - 09:33
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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 Fri Jun 26, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3726214512,82sleep23757-21kernelversion18:53:492
3726214512,82sleep23757-21kernelversion18:53:492
4860999556,33cyclictest2339-21systemd-run23:23:191
4856999581,10cyclictest4847-21cyclictest22:23:340
4856999581,10cyclictest4847-21cyclictest22:23:340
486099933,31cyclictest26532-21/usr/sbin/munin00:03:451
486099913,32cyclictest25775-21open_inodes22:13:521
486099904,35cyclictest14880-21cron19:28:191
486099904,35cyclictest14880-21cron19:28:191
4860999042,41cyclictest0-21swapper/100:18:181
4860999042,41cyclictest0-21swapper/100:18:181
486099903,33cyclictest5311-21fschecks_time18:58:401
486099902,35cyclictest24658-21unixbench_singl23:58:561
486499893,58cyclictest13548-21apt-get22:48:382
486499893,58cyclictest13548-21apt-get22:48:382
4860998941,40cyclictest0-21swapper/121:05:511
4860998941,40cyclictest0-21swapper/121:05:511
486099893,34cyclictest22828-21grep19:49:101
486099893,34cyclictest22828-21grep19:49:101
486099893,33cyclictest31693-21runrttasks22:24:301
486099893,33cyclictest31693-21runrttasks22:24:301
4856998961,20cyclictest544-21cron23:43:180
4856998961,20cyclictest544-21cron23:43:180
486099884,36cyclictest15018-21ssh23:43:431
486099884,36cyclictest15018-21ssh23:43:431
486099883,33cyclictest19555-21timerwakeupswit21:08:551
486499874,58cyclictest23715-21apt-get19:53:372
486099875,28cyclictest12961-21ssh21:53:211
486099874,30cyclictest7832-21fschecks_count20:43:381
486099874,29cyclictest12537-21/usr/sbin/munin20:58:351
4860998736,43cyclictest0-21swapper/121:43:291
486099873,35cyclictest352-21runrttasks22:33:541
486099873,30cyclictest5620-21/usr/sbin/munin23:28:281
486099872,76cyclictest11849-21apt-get23:39:241
486099872,76cyclictest11849-21apt-get23:39:241
486099872,34cyclictest14088-21/usr/sbin/munin22:49:471
486099872,34cyclictest14088-21/usr/sbin/munin22:49:471
486099872,32cyclictest13837-21wc21:53:541
4856998719,24cyclictest25825-21true23:08:190
4860998669,11cyclictest1-21systemd23:38:191
4860998639,40cyclictest0-21swapper/122:43:571
486099863,33cyclictest24396-21latency_hist21:18:221
486099863,33cyclictest24396-21latency_hist21:18:221
486099863,32cyclictest29561-21ssh00:08:301
486099863,31cyclictest16074-21/usr/sbin/munin21:58:551
486099863,31cyclictest16074-21/usr/sbin/munin21:58:551
486099863,30cyclictest7354-21fschecks_time19:03:431
486099863,30cyclictest18541-21latency_hist19:38:221
486099862,31cyclictest2836-21grep23:23:391
486099862,31cyclictest2836-21grep23:23:391
486099862,30cyclictest25848-21grep19:58:471
4860998615,21cyclictest4578-21wc21:38:451
4856998659,19cyclictest9771-21sendmail21:48:180
486099854,36cyclictest23406-21fschecks_time23:03:411
486099854,30cyclictest11473-21grep20:53:511
486099854,30cyclictest11227-21grep19:13:561
486099854,29cyclictest956-21taskset21:33:211
486099853,44cyclictest8694-21/usr/sbin/munin19:08:371
486099853,35cyclictest352-21runrttasks20:33:581
486099853,35cyclictest22934-21latency_hist23:03:211
486099853,34cyclictest28357-21grep22:18:401
486099853,32cyclictest7858-21/usr/sbin/munin22:38:521
486099853,32cyclictest7858-21/usr/sbin/munin22:38:521
486099853,32cyclictest18152-21latency23:48:501
4860998523,9cyclictest0-21swapper/121:23:341
486099852,35cyclictest15429-21fschecks_time19:28:401
486099852,35cyclictest15429-21fschecks_time19:28:401
486099852,34cyclictest24805-21apt22:13:181
72772840,4sleep2371rcuc/223:30:262
4864998462,16cyclictest13960-21latency_hist22:48:222
486499844,41cyclictest39-21ksoftirqd/223:08:152
486099844,28cyclictest26656-21awk23:08:451
486099843,42cyclictest6570-21ntp_kernel_err00:23:471
486099843,42cyclictest6570-21ntp_kernel_err00:23:471
486099843,33cyclictest1426-21tune2fs20:23:411
486099843,32cyclictest352-21runrttasks19:53:241
486099843,30cyclictest26995-21sort20:03:351
486099843,30cyclictest1331-21fschecks_count21:33:401
486099843,30cyclictest1331-21fschecks_count21:33:401
486099843,28cyclictest20462-21fschecks_time19:43:401
486099843,28cyclictest20462-21fschecks_time19:43:401
486099842,33cyclictest4927-21latency_hist18:58:231
486099842,33cyclictest4927-21latency_hist18:58:231
486099842,33cyclictest24800-21ssh21:18:391
486099842,32cyclictest4152-21latency_hist20:33:211
485699844,47cyclictest5103-21unixbench_multi21:38:550
4856998438,35cyclictest10323-21sshd19:13:290
486499832,47cyclictest39-21ksoftirqd/223:00:272
486099834,32cyclictest17086-21/usr/sbin/munin22:53:471
486099834,30cyclictest29371-21fschecks_count23:13:401
486099834,29cyclictest31505-21modprobe20:18:181
486099834,29cyclictest21051-21ssh23:53:451
486099834,29cyclictest21051-21ssh23:53:451
486099833,32cyclictest1853-21/usr/sbin/munin22:28:511
486099833,32cyclictest18117-21apt-get19:38:321
4856998330,20cyclictest0-21swapper/022:32:560
4856998315,31cyclictest10231-21head20:48:540
486099823,35cyclictest19078-21/usr/sbin/munin22:03:361
4860998218,11cyclictest0-21swapper/100:18:241
4856998249,25cyclictest15550-21ssh22:49:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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