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2026-09-09 - 12:59
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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 Wed Sep 09, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38369910950,42cyclictest0-21swapper/022:49:540
38369910742,22cyclictest526-21rs:main0
38369910741,22cyclictest8381-21sed00:34:390
38369910739,38cyclictest878-21cpu23:29:520
38369910642,52cyclictest23161-21grep22:20:110
38369910642,52cyclictest23161-21grep22:20:110
38369910542,31cyclictest4647-21sendmail_mailst21:50:120
38369910541,19cyclictest500-21apt-key21:44:390
38369910537,28cyclictest9298-21date21:04:400
38369910537,28cyclictest9298-21date21:04:400
38369910439,23cyclictest15948-21tune2fs19:44:560
38369910347,21cyclictest31526-21sh22:34:480
38369910347,21cyclictest31526-21sh22:34:480
38369910340,23cyclictest22756-21uname00:05:020
38369910340,23cyclictest22756-21uname00:05:020
3853991023,51cyclictest862-21ssh21:44:522
38369910239,27cyclictest8897-21ssh23:42:210
38369910239,20cyclictest341-21ssh00:20:130
38369910239,20cyclictest341-21ssh00:20:130
38369910238,29cyclictest25669-21apt-get20:14:480
38369910238,24cyclictest20847-21fschecks_time20:00:000
38369910238,24cyclictest20847-21fschecks_time20:00:000
3098210210,60sleep13151-21grep19:05:211
38369910140,22cyclictest4783-21/usr/sbin/munin23:35:130
38369910134,28cyclictest21324-21rm22:17:520
3853991004,39cyclictest27424-21fschecks_count23:19:592
38539910037,10cyclictest0-21swapper/222:40:152
38369910055,34cyclictest954-21ssh21:45:060
3836999943,45cyclictest0-21swapper/021:24:510
3836999939,27cyclictest15276-21rm23:53:040
3836999939,27cyclictest15276-21rm23:53:040
3836999938,26cyclictest14921-21ssh22:07:090
29482998,65sleep22996-21/usr/sbin/munin19:05:182
28622998,61sleep02892-21ntp_kernel_pll_19:05:120
3853999855,38cyclictest3828-21cyclictest22:56:462
385399984,38cyclictest16137-21/usr/sbin/munin22:09:522
385399984,38cyclictest16137-21/usr/sbin/munin22:09:522
3836999841,23cyclictest31486-21head20:30:150
3836999841,22cyclictest8263-21dpkg22:49:390
3836999839,23cyclictest25357-21latency_hist20:14:380
3836999838,28cyclictest15221-21unixbench_singl21:15:150
3836999838,20cyclictest9563-21unixbench_multi00:35:140
3836999837,23cyclictest16606-21kernelversion23:55:020
3836999834,23cyclictest28519-21cpu22:29:520
385399976,35cyclictest23595-21/usr/sbin/munin21:30:182
3853999735,7cyclictest0-21swapper/221:59:392
385399973,50cyclictest30659-21kernelversion23:25:022
3853999731,13cyclictest0-21swapper/200:29:382
3853999727,18cyclictest0-21swapper/223:51:132
3853999727,18cyclictest0-21swapper/223:51:132
3836999740,23cyclictest18459-21grep23:05:090
3836999740,23cyclictest18459-21grep23:05:090
385399964,39cyclictest343-21runrttasks22:44:572
385399963,36cyclictest29184-21fschecks_time20:25:002
385399963,34cyclictest20778-21fschecks_count21:24:582
385399963,34cyclictest20429-21latency_hist19:59:392
385399963,32cyclictest21149-21rm23:09:592
3853999630,19cyclictest0-21swapper/200:04:582
3853999630,19cyclictest0-21swapper/200:04:582
3853999628,13cyclictest0-21swapper/220:45:012
3836999639,50cyclictest1-21systemd23:04:370
3836999638,30cyclictest25583-21ssh00:09:450
3836999637,23cyclictest3603-21grep20:45:110
3836999636,23cyclictest28273-21users23:20:160
385399954,46cyclictest6129-21/usr/sbin/munin20:55:032
3853999536,12cyclictest0-21swapper/219:50:002
3853999534,11cyclictest0-21swapper/219:14:362
3853999534,11cyclictest0-21swapper/219:14:362
385399953,39cyclictest343-21runrttasks22:04:312
385399953,35cyclictest25267-21cmp20:14:372
385399953,34cyclictest343-21runrttasks20:20:022
385399953,34cyclictest31969-21ls22:35:022
385399953,34cyclictest31969-21ls22:35:022
3836999539,20cyclictest30230-21apt-get23:24:480
3836999531,29cyclictest0-21swapper/022:25:040
3836999531,26cyclictest0-21swapper/019:35:090
3836999531,26cyclictest0-21swapper/019:35:090
3836999531,22cyclictest0-21swapper/023:11:560
385399945,35cyclictest12419-21latency_hist19:34:402
385399944,38cyclictest16598-21kernelversion23:55:012
385399944,33cyclictest5687-21fschecks_count00:29:572
3853999436,8cyclictest0-21swapper/221:50:002
385399943,41cyclictest26518-21timerwakeupswit20:15:272
385399943,40cyclictest23099-21timerwakeupswit20:05:122
385399943,40cyclictest23099-21timerwakeupswit20:05:122
385399943,36cyclictest31744-21/usr/sbin/munin00:19:582
385399943,36cyclictest31744-21/usr/sbin/munin00:19:582
385399943,35cyclictest28120-21modprobe22:29:352
385399943,35cyclictest22361-21sh22:19:522
385399943,35cyclictest22361-21sh22:19:522
385399943,34cyclictest22240-21latency_hist22:19:402
385399942,44cyclictest12558-21cpu19:34:532
385399942,44cyclictest12558-21cpu19:34:532
385399942,35cyclictest30518-21acpi20:29:482
3836999443,23cyclictest2187-21ssh22:39:520
3836999440,18cyclictest22005-21apt00:04:360
3836999440,18cyclictest22005-21apt00:04:360
3836999439,22cyclictest7735-21cpu19:19:520
3836999438,23cyclictest24195-21ntpq21:30:080
385399934,34cyclictest1303-21/usr/sbin/munin20:40:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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