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2025-12-31 - 12:17
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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 Dec 31, 2025 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1766991138,77cyclictest15559-21apt-get23:59:421
1766991048,65cyclictest2200-21taskset22:45:131
1766991048,65cyclictest2200-21taskset22:45:131
1766999826,14cyclictest0-21swapper/119:19:391
176699974,43cyclictest11928-21latency_hist23:54:281
1766999739,8cyclictest0-21swapper/119:35:011
63929626,43sleep30-21swapper/319:04:583
1766999668,21cyclictest382-21rs:main1
1766999668,21cyclictest382-21rs:main1
1766999611,67cyclictest20387-21apt-get20:04:491
177399956,48cyclictest39-21ksoftirqd/220:44:482
176699953,34cyclictest15156-21unixbench_multi23:05:031
159292950,7sleep115920-21ssh22:14:291
1766999439,49cyclictest0-21swapper/120:24:491
1766999438,48cyclictest0-21swapper/123:29:471
176699933,30cyclictest22753-21ssh00:10:031
176699933,30cyclictest22753-21ssh00:10:031
176699933,30cyclictest18242-21/usr/sbin/munin21:25:021
1766999329,12cyclictest0-21swapper/123:20:161
176699926,65cyclictest20399-21apt-get23:14:431
176699926,65cyclictest20399-21apt-get23:14:431
1766999234,11cyclictest0-21swapper/123:45:011
176699922,39cyclictest27535-21grep00:19:271
176699922,35cyclictest15031-40mandb23:59:291
176699922,34cyclictest13413-21modprobe19:44:241
57929114,52sleep1617-21if_eth019:04:561
1773999174,10cyclictest1465-21apt-key22:44:262
1773999154,14cyclictest1749-21cyclictest20:56:302
1773999154,14cyclictest1749-21cyclictest20:56:302
1766999135,48cyclictest0-21swapper/123:09:581
1766999135,48cyclictest0-21swapper/123:09:581
176699913,34cyclictest12037-21ssh21:14:281
176699913,34cyclictest12037-21ssh21:14:281
176699913,32cyclictest9696-21basename22:04:251
176699912,30cyclictest30580-21latency_hist00:24:271
176699912,30cyclictest30580-21latency_hist00:24:271
1766999058,21cyclictest31756-21timerwakeupswit00:25:031
1766999037,46cyclictest0-21swapper/122:50:001
176699903,30cyclictest408-21fschecks_time23:34:481
176699902,35cyclictest10884-21latency_hist22:59:281
176699902,35cyclictest10884-21latency_hist22:59:281
176699902,33cyclictest29962-21latency_hist20:34:281
1773998947,9cyclictest181rcu_preempt23:14:392
1773998947,9cyclictest181rcu_preempt23:14:392
176699893,38cyclictest2128-21fschecks_count19:09:471
176699893,34cyclictest19240-21switchtime20:00:001
176699893,33cyclictest4445-21/usr/sbin/munin00:34:481
176699893,33cyclictest4445-21/usr/sbin/munin00:34:481
176699893,33cyclictest346-21runrttasks19:19:271
176699893,32cyclictest15221-21/usr/sbin/munin21:19:551
176699893,29cyclictest27467-21taskset21:39:431
176699893,29cyclictest27467-21taskset21:39:431
1766998932,13cyclictest12889-21ssh22:09:281
176699892,35cyclictest6637-21cut21:00:001
176699892,32cyclictest31589-21latency_hist20:39:271
176699883,37cyclictest537-21grep20:41:021
176699883,36cyclictest22079-21/usr/sbin/munin22:24:451
176699883,36cyclictest16151-21cpuspeed22:14:431
176699883,35cyclictest5734-21latency_hist20:59:261
176699883,35cyclictest5734-21latency_hist20:59:261
176699883,35cyclictest13774-21ls19:44:441
176699883,33cyclictest23876-21fschecks_time20:14:491
176699883,33cyclictest23876-21fschecks_time20:14:491
176699883,33cyclictest17374-21seq19:54:551
176699883,31cyclictest28697-21ntp_kernel_pll_22:34:531
176699883,31cyclictest25563-21latency22:29:501
1766998829,12cyclictest0-21swapper/123:24:531
176699882,39cyclictest25230-21/usr/sbin/munin20:19:571
176699882,38cyclictest19846-21mailstats22:19:591
176699882,30cyclictest840-21/usr/sbin/munin21:50:011
176699882,28cyclictest16714-21latency_hist19:54:271
176699873,33cyclictest12470-21fschecks_time21:14:471
176699873,28cyclictest20590-21ssh00:07:261
176699872,34cyclictest9666-21wc19:30:021
176699872,33cyclictest3693-21/usr/sbin/munin23:39:531
176699872,33cyclictest3693-21/usr/sbin/munin23:39:531
176699872,32cyclictest8908-21latency_hist21:09:281
176699872,30cyclictest4219-21latency_hist20:54:281
148928715,35sleep00-21swapper/019:07:530
176699863,41cyclictest31232-21cat21:45:041
176699862,30cyclictest8675-21latency_hist19:29:281
176699854,33cyclictest1740-21mailstats20:45:071
176699853,33cyclictest2152-21sendmail_mailqu00:30:021
176699853,33cyclictest11944-21timerandwakeup23:00:011
176699853,29cyclictest22326-21if_eth020:09:491
1766998511,28cyclictest24713-21kernelversion21:34:521
1762998568,11cyclictest24560-21fschecks_time21:34:480
1773998464,14cyclictest8918-21diskmemload00:34:592
1773998464,14cyclictest8918-21diskmemload00:34:592
176699843,29cyclictest31159-21/usr/sbin/munin22:39:361
1762998463,14cyclictest913-21latency_hist20:44:270
1762998453,9cyclictest181rcu_preempt22:49:540
1773998362,13cyclictest25792-21processes22:29:572
1773998342,10cyclictest181rcu_preempt20:09:302
1773998339,11cyclictest181rcu_preempt19:49:582
1773998334,17cyclictest181rcu_preempt23:33:592
1762998341,21cyclictest181rcu_preempt22:39:270
1773998243,10cyclictest1749-21cyclictest19:25:002
1773998148,8cyclictest181rcu_preempt22:48:452
1773998148,8cyclictest181rcu_preempt22:48:452
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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