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2026-03-25 - 20:56
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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 Mar 25, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7530991112,88cyclictest4340-21apt-get10:34:542
75309910250,42cyclictest0-21swapper/211:19:472
75259910134,18cyclictest0-21swapper/109:49:311
7530999863,25cyclictest5087-21apt-key08:34:342
7530999863,25cyclictest5087-21apt-key08:34:342
7530999841,50cyclictest13633-21latency_hist11:44:342
7525999837,9cyclictest0-21swapper/108:19:341
7525999837,9cyclictest0-21swapper/108:19:341
7530999712,13cyclictest0-21swapper/210:44:422
7530999712,13cyclictest0-21swapper/210:44:422
753099934,35cyclictest3778-21/usr/sbin/munin09:39:512
753099924,34cyclictest22646-21latency11:04:562
753099923,37cyclictest27819-21latency_hist08:04:342
753099923,35cyclictest2823-21wc08:25:072
753099923,34cyclictest8586-21latency_hist08:44:342
753099923,33cyclictest5478-21open_inodes11:30:022
753099923,33cyclictest5478-21open_inodes11:30:022
753099923,33cyclictest1680-21sh10:29:592
753099913,36cyclictest18982-21latency_hist10:59:332
753099913,36cyclictest18982-21latency_hist10:59:332
7530999127,10cyclictest0-21swapper/211:59:532
753099912,29cyclictest18417-21fschecks_count09:09:532
753099903,76cyclictest21436-21rm09:14:492
7525999042,17cyclictest181rcu_preempt11:01:361
752199903,35cyclictest15-21ksoftirqd/007:44:330
634629026,33sleep2381ktimers/206:59:592
753099893,35cyclictest24673-21/usr/sbin/munin10:14:572
753099893,34cyclictest31352-21idleruntime-cro12:14:312
753099893,34cyclictest10821-21head09:50:072
753099893,33cyclictest28843-21processes11:15:032
753099893,33cyclictest28843-21processes11:15:032
753099893,33cyclictest15444-21ssh09:04:532
7530998923,25cyclictest32571-21modprobe08:19:312
7530998923,25cyclictest32571-21modprobe08:19:312
7525998954,10cyclictest31-21ksoftirqd/108:35:151
70432897,53sleep17050-21users07:00:191
753099883,38cyclictest352-21runrttasks10:00:212
753099883,38cyclictest352-21runrttasks10:00:212
753099883,38cyclictest27833-21sh10:19:502
753099883,34cyclictest2150-21/usr/sbin/munin12:20:052
753099883,34cyclictest2150-21/usr/sbin/munin12:20:052
753099883,33cyclictest31012-21latency_hist08:14:342
753099883,33cyclictest31012-21latency_hist08:14:342
7530998828,54cyclictest0-21swapper/207:39:572
753099882,32cyclictest16330-21latency_hist07:29:352
753099882,32cyclictest16330-21latency_hist07:29:352
753099882,31cyclictest19709-21latency_hist07:39:342
753099882,31cyclictest19709-21latency_hist07:39:342
7525998847,10cyclictest7512-21cyclictest12:25:471
753099874,35cyclictest21513-21/usr/sbin/munin07:45:312
753099874,35cyclictest21513-21/usr/sbin/munin07:45:312
753099874,32cyclictest9046-21modprobe07:09:312
753099873,34cyclictest32227-21ntpq12:14:592
753099873,31cyclictest8064-21ssh11:34:522
7530998731,48cyclictest0-21swapper/208:35:212
753099872,35cyclictest643-21fschecks_time08:19:552
753099872,35cyclictest643-21fschecks_time08:19:552
753099872,33cyclictest9852-21cstates07:09:512
753099865,30cyclictest24352-21/usr/sbin/munin09:20:092
753099863,38cyclictest11931-21acpi08:54:432
753099863,33cyclictest28376-21wc08:04:572
753099863,32cyclictest7899-21ntp_kernel_pll_10:39:592
753099863,32cyclictest22351-21wc10:10:052
7530998610,27cyclictest7111-21sort09:44:552
7521998665,10cyclictest31658-21ssh11:20:110
7530998566,12cyclictest28287-21timerwakeupswit09:25:082
7530998566,12cyclictest28287-21timerwakeupswit09:25:082
753099854,31cyclictest5114-21/usr/sbin/munin12:25:432
7530998523,11cyclictest0-21swapper/211:29:342
7530998523,11cyclictest0-21swapper/211:29:342
753099852,29cyclictest26234-21/usr/sbin/munin12:04:592
7521998569,10cyclictest20833-21munin-run09:14:320
7521998554,23cyclictest0-21swapper/009:30:100
753099844,29cyclictest12725-21/usr/sbin/munin09:54:582
753099843,34cyclictest14251-21latency11:44:572
753099843,34cyclictest14251-21latency11:44:572
753099843,33cyclictest8984-21sort12:30:052
753099843,33cyclictest13839-21ntpq10:49:592
753099843,33cyclictest13373-21cut07:19:552
753099843,33cyclictest13373-21cut07:19:552
753099843,32cyclictest8794-21cstates08:44:502
753099843,32cyclictest25885-21ssh11:10:052
753099843,32cyclictest22041-21ssh11:04:342
753099843,31cyclictest25214-21taskset07:54:572
7530998428,10cyclictest0-21swapper/209:30:082
73032847,61sleep00-21swapper/007:03:320
7530998340,36cyclictest0-21swapper/210:05:272
753099833,27cyclictest30567-21/usr/sbin/munin10:25:032
753099833,27cyclictest30567-21/usr/sbin/munin10:25:032
753099832,30cyclictest11639-21cron08:54:312
753099832,29cyclictest12925-21sed07:19:342
753099832,29cyclictest12925-21sed07:19:342
753099832,23cyclictest1110-21/usr/sbin/munin09:34:532
753099824,29cyclictest16425-21/usr/sbin/munin07:30:452
753099823,36cyclictest24081-21head07:50:072
753099823,23cyclictest19719-21/usr/sbin/munin11:54:592
753099823,23cyclictest19719-21/usr/sbin/munin11:54:592
753099822,31cyclictest14124-21wc09:00:032
7521998266,9cyclictest27884-21ssh10:19:530
7525998140,32cyclictest28958-21sort12:09:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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