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2026-09-05 - 20:09
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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 Sat Sep 05, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3051421377,17sleep00-21swapper/007:06:200
3051421377,17sleep00-21swapper/007:06:200
31026991113,87cyclictest27690-21apt-get10:35:100
310719910255,40cyclictest23883-21cpuspeed11:20:072
31026999872,18cyclictest32733-21latency_hist07:14:530
31071999780,11cyclictest200-21systemd-journal11:54:542
3107199972,28cyclictest343-21runrttasks12:17:232
31071999656,33cyclictest200-21systemd-journal07:23:532
31052999348,39cyclictest15145-21fschecks_count10:15:131
31052999348,39cyclictest15145-21fschecks_count10:15:131
31071999249,36cyclictest3159-21fschecks_time09:00:142
31052999272,14cyclictest16775-21sh12:00:111
31071999173,12cyclictest6446-21fschecks_count09:10:132
31071999173,12cyclictest6446-21fschecks_count09:10:132
3107199914,44cyclictest19706-21sh12:05:062
31071999074,9cyclictest0-21swapper/209:16:152
31071999074,9cyclictest0-21swapper/209:16:152
31052999061,20cyclictest16525-21threads09:25:271
31052999052,30cyclictest0-21swapper/111:10:251
3105299903,79cyclictest0-21swapper/108:05:041
31071998946,36cyclictest0-21swapper/209:25:282
31052998947,36cyclictest5866-21diskmemload12:05:171
3107199883,50cyclictest17340-21apt-get08:05:042
31052998848,32cyclictest0-21swapper/111:20:241
31052998847,34cyclictest0-21swapper/110:45:131
31052998844,34cyclictest22512-21if_eth008:20:151
3107199878,35cyclictest14479-21wc11:05:082
3107199878,35cyclictest14479-21wc11:05:082
31071998744,36cyclictest0-21swapper/212:04:502
2981628712,49sleep129878-21latency07:05:241
2981628712,49sleep129878-21latency07:05:241
3107199863,37cyclictest31096-21rm10:40:052
3107199863,37cyclictest31096-21rm10:40:052
3107199863,28cyclictest343-21runrttasks10:55:512
31052998647,33cyclictest358-21ntpd11:05:201
31052998647,33cyclictest358-21ntpd11:05:201
3105299863,75cyclictest0-21swapper/108:35:031
3105299863,75cyclictest0-21swapper/108:35:031
3102699867,44cyclictest22828-21wc12:10:090
31071998567,12cyclictest18726-21sh10:20:232
3107199852,41cyclictest5855-21latency_hist09:09:542
31052998541,38cyclictest9875-21latency_hist11:49:521
31052998540,37cyclictest29361-21switchtime08:40:251
31052998510,41cyclictest0-21swapper/107:54:061
31052998510,41cyclictest0-21swapper/107:54:061
31026998525,49cyclictest4968-21cpu10:50:080
3102699852,42cyclictest15-21ksoftirqd/012:09:370
31071998445,33cyclictest5866-21diskmemload11:14:412
3107199844,32cyclictest4900-21/usr/sbin/munin10:50:032
31071998442,37cyclictest0-21swapper/208:44:542
3107199843,41cyclictest15700-21/usr/sbin/munin08:01:102
3107199843,36cyclictest27257-21apt-key10:34:522
3107199843,36cyclictest2309-21modprobe07:19:512
3107199843,34cyclictest28363-21run-parts08:39:502
3107199843,34cyclictest28363-21run-parts08:39:502
3107199842,36cyclictest1012-21awk08:54:502
3107199842,36cyclictest1012-21awk08:54:502
3107199842,35cyclictest200-21systemd-journal09:54:502
3107199842,35cyclictest200-21systemd-journal09:54:502
3107199842,33cyclictest13662-21ssh11:03:572
31052998465,13cyclictest12178-21latency_hist07:49:531
31052998465,13cyclictest12178-21latency_hist07:49:531
31052998447,30cyclictest0-21swapper/111:40:081
3105299843,75cyclictest0-21swapper/110:50:031
3105299843,69cyclictest0-21swapper/110:30:051
31026998462,14cyclictest13421-21latency_hist11:54:550
3102699843,27cyclictest15-21ksoftirqd/007:35:180
31071998367,10cyclictest27244-21runrttasks11:25:132
3107199834,37cyclictest23360-21ntp_kernel_pll_12:10:212
3107199833,8cyclictest0-21swapper/208:55:032
3107199833,35cyclictest6555-21grep10:00:282
3107199833,35cyclictest30758-21ssh10:39:532
3107199832,9cyclictest0-21swapper/212:20:082
3107199832,37cyclictest22473-21/usr/sbin/munin09:35:172
31052998343,33cyclictest5866-21diskmemload09:40:081
31052998341,36cyclictest5365-21latency_hist09:59:531
3105299833,46cyclictest343-21runrttasks07:56:541
3105299832,45cyclictest0-21swapper/108:25:271
31026998362,15cyclictest662-21cron09:49:510
31026998362,15cyclictest662-21cron09:49:510
31071998267,10cyclictest31016-21cyclictest10:04:542
31071998267,10cyclictest31016-21cyclictest10:04:542
31071998248,28cyclictest0-21swapper/209:55:102
3107199823,36cyclictest15241-21gpgv07:59:512
3107199823,35cyclictest7136-21latency_hist07:34:532
3107199823,34cyclictest22409-21grep08:20:132
3107199823,33cyclictest21157-21/usr/sbin/munin10:25:112
3107199822,36cyclictest31048-21grep08:46:112
3107199822,36cyclictest31048-21grep08:46:112
3107199822,36cyclictest1747-21/usr/sbin/munin10:45:192
3107199822,35cyclictest7042-21ssh11:45:022
31052998262,10cyclictest0-21swapper/112:35:081
31052998260,15cyclictest32032-21latency_hist12:24:541
3105299823,66cyclictest0-21swapper/111:00:041
31026998260,14cyclictest5866-21diskmemload11:33:540
3102699822,45cyclictest15-21ksoftirqd/007:29:450
3107199814,39cyclictest3399-21cpu12:31:052
3107199813,36cyclictest12480-21/usr/sbin/munin09:20:112
3107199813,35cyclictest21618-21awk09:34:512
3107199813,35cyclictest21618-21awk09:34:512
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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