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2026-05-02 - 19:19
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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 rackaslot8.osadl.org (updated Sat May 02, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320412285255,19sleep20-21swapper/207:08:572
320302268235,22sleep30-21swapper/307:08:493
318992268236,21sleep10-21swapper/107:07:071
318152267238,19sleep00-21swapper/007:06:010
209482690,0sleep20-21swapper/212:20:122
83292610,0sleep00-21swapper/010:55:180
285522610,0sleep30-21swapper/312:24:583
26672600,0sleep20-21swapper/210:14:232
197762600,0sleep00-21swapper/012:19:410
250752580,0sleep122-21ksoftirqd/110:27:111
191522550,0sleep10-21swapper/112:00:011
70502210,0sleep10-21swapper/110:55:111
104832210,0sleep10-21swapper/110:18:551
107792170,0sleep10-21swapper/109:21:521
159202160,0sleep00-21swapper/011:38:420
3482150,0sleep10-21swapper/110:31:391
58752140,0sleep20-21swapper/209:56:372
98052130,0sleep30-21swapper/310:18:243
3226699123,2cyclictest504-21dbus-daemon08:20:003
69942110,0sleep10-21swapper/112:11:231
3226699113,2cyclictest11849-21munin-plugin-st07:35:013
3226699111,3cyclictest275-21systemd-journal08:35:003
235592110,0sleep00-21swapper/012:21:100
58842100,0sleep00-21swapper/012:10:330
3226699103,2cyclictest27779-21rm11:06:513
3226699103,1cyclictest275-21systemd-journal09:49:563
3226699102,3cyclictest658-21snmpd11:24:373
3226699102,3cyclictest13321-21cat10:20:153
3226699102,2cyclictest24949-21rm09:10:593
3226699102,2cyclictest15014-21latency_hist11:00:003
3226699100,3cyclictest275-21systemd-journal12:15:353
3226699100,3cyclictest275-21systemd-journal09:15:143
3226699100,3cyclictest17355-21munin-run09:00:003
3226699100,2cyclictest275-21systemd-journal12:40:013
3226699100,2cyclictest275-21systemd-journal09:05:203
3225899105,3cyclictest30372-21dump-pmu-power09:15:011
3809290,0sleep30-21swapper/309:36:323
322669993,2cyclictest21542-21ssh12:00:383
322669993,1cyclictest8657-21unixbench_singl09:20:203
322669993,1cyclictest4148-21sh09:55:213
322669992,2cyclictest26681-21if_err_enp4s009:50:153
322669992,2cyclictest25059-21ssh10:27:113
322669992,2cyclictest22928-21ssh10:06:383
322669992,2cyclictest15172-21cat08:55:013
322669992,2cyclictest13155-21taskset10:00:413
322669992,1cyclictest0-21swapper/310:38:273
322669991,2cyclictest29787-21grep10:30:153
322669991,2cyclictest21823-21diskmemload12:30:123
322669990,4cyclictest15379-21ssh11:57:203
322669990,3cyclictest796-21ntp_states08:20:173
322669990,3cyclictest28489-21perl10:10:123
322669990,3cyclictest275-21systemd-journal10:47:283
322669990,3cyclictest18195-21head07:45:213
322669983,1cyclictest10952-21apt-get08:45:123
322669982,2cyclictest8411-21sed07:25:163
322669982,2cyclictest4792-21rm10:53:363
322669982,2cyclictest0-21swapper/311:25:033
322669982,2cyclictest0-21swapper/311:11:383
322669982,1cyclictest8859-21cat11:15:133
322669982,1cyclictest8859-21cat11:15:123
322669982,1cyclictest7548-21proc_pri08:35:183
322669982,1cyclictest2448-21expr07:15:023
322669981,3cyclictest658-21snmpd08:01:493
322669981,2cyclictest32538-21ssh12:07:313
322669980,3cyclictest5945-21ssh11:51:333
322669980,3cyclictest31593-21ssh12:25:403
322669980,3cyclictest275-21systemd-journal11:35:473
322669980,3cyclictest26999-21df_inode11:45:133
322669980,3cyclictest24146-21ssh09:30:033
322669980,3cyclictest23093-21ssh11:04:413
322669980,3cyclictest19365-21/usr/sbin/munin11:40:193
322669980,3cyclictest18931-21ssh10:42:343
322669980,3cyclictest17500-21sed09:25:213
322669980,3cyclictest1239-21ssh11:30:073
322669980,2cyclictest275-21systemd-journal09:40:203
322669980,2cyclictest275-21systemd-journal08:25:093
322669980,2cyclictest275-21systemd-journal07:39:593
322629984,3cyclictest275-21systemd-journal09:41:352
322589984,3cyclictest504-21dbus-daemon11:05:011
322589983,3cyclictest275-21systemd-journal08:53:281
322589980,7cyclictest14259-21ssh12:15:311
322589980,5cyclictest4024-21perf08:30:011
322539981,4cyclictest15135-21ls08:55:010
322669972,2cyclictest5268-21cat12:10:193
322669970,3cyclictest658-21snmpd07:43:453
322669970,3cyclictest15505-11brltty07:24:063
322629974,2cyclictest23725-11brltty10:04:562
322629973,3cyclictest30960-21ntpq08:15:162
322629973,3cyclictest275-21systemd-journal09:36:102
322629973,2cyclictest275-21systemd-journal09:25:172
322629973,1cyclictest0-21swapper/210:47:502
322629972,3cyclictest4887-21awk10:35:012
322629970,7cyclictest29913-21ssh09:14:422
322629970,7cyclictest0-21swapper/209:22:462
322589973,3cyclictest504-21dbus-daemon10:05:011
322539973,3cyclictest5463-21sed12:30:000
322539973,3cyclictest275-21systemd-journal11:57:400
322539973,3cyclictest275-21systemd-journal11:20:340
322539973,3cyclictest275-21systemd-journal09:14:250
322539973,3cyclictest275-21systemd-journal08:34:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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