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2026-03-23 - 23:30
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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 Mon Mar 23, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194012276249,17sleep10-21swapper/107:09:191
193412275248,18sleep20-21swapper/207:08:322
193122261230,20sleep00-21swapper/007:08:100
193882257230,18sleep30-21swapper/307:09:093
318602620,0sleep20-21swapper/212:20:122
149402600,0sleep00-21swapper/009:32:320
302972570,0sleep230298-21tune2fs11:20:142
221042570,0sleep20-21swapper/210:35:332
156562550,0sleep10-21swapper/111:30:261
133412550,0sleep10-21swapper/112:28:521
41932530,0sleep10-21swapper/109:25:401
171702530,0sleep30-21swapper/310:52:323
228662200,0sleep20-21swapper/208:25:182
154592200,0sleep00-21swapper/011:30:200
78002170,0sleep00-21swapper/012:05:160
153092170,0sleep00-21swapper/012:10:130
156852150,0sleep30-21swapper/311:10:533
319272140,0sleep3331rcuc/311:01:053
326052130,0sleep10-21swapper/110:42:211
26752130,0sleep30-21swapper/311:42:453
1956799113,1cyclictest0-21swapper/211:13:172
1956799100,3cyclictest5624-21idleruntime-cro11:45:012
1956799100,3cyclictest275-21systemd-journal12:38:342
1956799100,2cyclictest275-21systemd-journal10:25:002
20421290,0chrt0-21swapper/212:33:012
195679993,2cyclictest504-21dbus-daemon08:43:072
195679993,2cyclictest31315-21cron07:39:562
195679993,1cyclictest4999-21needreboot10:45:142
195679992,2cyclictest6067-21uname11:05:172
195679992,2cyclictest32252-1kworker/u9:112:12:482
195679992,2cyclictest30377-21ssh12:19:362
195679992,2cyclictest275-21systemd-journal12:01:242
195679992,2cyclictest24232-21ssh09:57:512
195679992,1cyclictest0-21swapper/210:40:152
195679990,5cyclictest29300-21users10:00:222
195679990,3cyclictest3856-21ntpq09:45:172
195679990,2cyclictest275-21systemd-journal09:01:282
195679990,2cyclictest275-21systemd-journal08:35:322
195679990,1cyclictest21918-21ntp_states10:55:172
195649993,3cyclictest16801-21munin-run08:15:011
11345290,0sleep30-21swapper/308:00:183
11345290,0sleep30-21swapper/308:00:173
195729986,1cyclictest0-21swapper/309:51:253
195679983,1cyclictest658-21snmpd08:10:202
195679982,2cyclictest8999-21sh11:26:392
195679982,2cyclictest6937-21ssh10:06:412
195679982,2cyclictest17946-21netstat08:15:162
195679982,1cyclictest5990-21ssh10:25:382
195679982,1cyclictest24001-21timerwakeupswit11:55:192
195679982,1cyclictest12816-21cat10:50:122
195679981,3cyclictest658-21snmpd12:27:032
195679981,3cyclictest32635-21/usr/sbin/munin08:50:192
195679981,3cyclictest0-21swapper/209:15:592
195679980,3cyclictest9250-21sh12:06:052
195679980,3cyclictest8769-21ssh11:46:042
195679980,3cyclictest5726-11brltty11:15:032
195679980,3cyclictest5319-21sh09:26:322
195679980,3cyclictest27546-21ssh11:38:162
195679980,3cyclictest26712-21ssh09:20:122
195679980,3cyclictest2077-21ssh11:03:022
195679980,3cyclictest16296-21sh11:50:352
195679980,3cyclictest15519-21rm09:32:582
195679980,3cyclictest14666-21wc11:30:152
195679980,3cyclictest13594-21sed10:30:192
195679980,3cyclictest13267-21basename08:05:162
195679980,3cyclictest13186-21rm10:10:192
195679980,3cyclictest11741-21/usr/sbin/munin09:50:152
195679980,3cyclictest11409-21sed08:00:202
195679980,3cyclictest11409-21sed08:00:202
195679980,3cyclictest0-21swapper/209:11:262
195679980,2cyclictest275-21systemd-journal09:41:232
195679980,2cyclictest275-21systemd-journal08:56:532
195649983,3cyclictest275-21systemd-journal07:40:021
195649981,4cyclictest11638-21idleruntime-cro10:30:001
195609986,1cyclictest4826-21mailstats10:05:220
21714270,1sleep10-21swapper/111:15:121
195729973,3cyclictest275-21systemd-journal12:36:293
195729973,3cyclictest275-21systemd-journal12:28:093
195729973,2cyclictest275-21systemd-journal07:55:063
195679973,1cyclictest0-21swapper/209:39:292
195679972,1cyclictest32001-21taskset08:45:222
195679971,2cyclictest658-21snmpd07:26:302
195679970,3cyclictest8558-21diskstats07:55:142
195679970,3cyclictest8447-21smart_sda09:05:192
195679970,3cyclictest7156-21smart_sda07:50:182
195679970,3cyclictest27078-11brltty07:45:102
195679970,3cyclictest24032-21ssh10:17:162
195679970,2cyclictest275-21systemd-journal07:30:342
195649976,1cyclictest22-21ksoftirqd/109:15:001
195649973,3cyclictest658-21snmpd11:56:081
195649973,3cyclictest658-21snmpd11:37:561
195609974,2cyclictest658-21snmpd10:25:360
195609973,3cyclictest658-21snmpd12:21:080
195609973,3cyclictest658-21snmpd11:20:220
195609972,3cyclictest275-21systemd-journal09:00:060
195609971,3cyclictest0-21swapper/011:15:010
10682270,0sleep30-21swapper/310:49:083
195729965,1cyclictest34-21ksoftirqd/310:35:013
195729964,1cyclictest1452-21smart_sda08:50:203
195729963,2cyclictest9662-21acpi09:10:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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