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2026-05-20 - 03:09
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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 rackaslot8.osadl.org (updated Wed May 20, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
54072302272,18sleep10-21swapper/119:06:101
55122278247,20sleep20-21swapper/219:07:312
55202276245,21sleep00-21swapper/019:07:380
56442258226,22sleep30-21swapper/319:09:143
247322590,0sleep10-21swapper/100:23:231
242482570,0sleep10-21swapper/122:45:141
172122560,0sleep20-21swapper/223:59:422
172122560,0sleep20-21swapper/223:59:422
317042550,0sleep20-21swapper/223:29:072
27462550,1sleep12747-21fschecks_time00:10:141
68762540,0sleep30-21swapper/321:16:093
64532200,0sleep00-21swapper/022:34:480
304912180,0sleep00-21swapper/022:29:430
197082170,0sleep20-21swapper/200:20:162
90232160,0sleep30-21swapper/300:14:173
70632140,0sleep00-21swapper/023:14:120
199952140,0sleep10-21swapper/121:44:231
314472130,0sleep10-21swapper/122:30:121
203332130,0sleep00-21swapper/022:42:440
580799120,3cyclictest275-21systemd-journal00:20:013
579099127,1cyclictest12-21ksoftirqd/022:40:000
108012120,0chrt0-21swapper/021:19:110
580799112,3cyclictest504-21dbus-daemon22:15:013
99122100,0sleep20-21swapper/222:55:322
580799104,1cyclictest19108-21unixbench_multi23:40:193
580299104,1cyclictest501-21in:imuxsock00:25:072
580299100,3cyclictest275-21systemd-journal21:11:572
580299100,3cyclictest275-21systemd-journal20:10:012
58079993,2cyclictest27549-21ssh00:05:223
58079993,2cyclictest25963-21ssh22:07:033
58079993,2cyclictest25963-21ssh22:07:033
58079993,1cyclictest9557-21taskset20:25:423
58079992,2cyclictest658-21snmpd20:10:353
58079992,2cyclictest504-21dbus-daemon22:37:273
58079992,2cyclictest0-21swapper/300:33:253
58079992,1cyclictest0-21swapper/323:52:453
58079992,1cyclictest0-21swapper/322:46:373
58079990,3cyclictest275-21systemd-journal23:32:333
58079990,3cyclictest275-21systemd-journal23:11:073
58079990,3cyclictest275-21systemd-journal20:24:563
58079990,3cyclictest275-21systemd-journal20:15:363
58079990,3cyclictest275-21systemd-journal20:05:573
58029996,3cyclictest0-21swapper/221:15:262
58029993,1cyclictest15197-21chrt00:17:402
58029993,1cyclictest0-21swapper/222:10:042
58029992,3cyclictest6703-21cat19:10:192
58029992,3cyclictest658-21snmpd00:02:122
58029992,2cyclictest30519-21unixbench_singl21:30:212
58029992,2cyclictest25863-21cat19:50:192
58029992,2cyclictest2002-21head23:10:202
58029992,1cyclictest0-21swapper/222:54:552
58029991,3cyclictest658-21snmpd20:20:362
58029991,3cyclictest275-21systemd-journal21:53:102
58029991,3cyclictest22344-21ssh22:44:192
58029991,3cyclictest0-21swapper/200:37:502
57909997,2cyclictest12-21ksoftirqd/019:55:010
57909997,2cyclictest12-21ksoftirqd/000:00:010
57909997,2cyclictest12-21ksoftirqd/000:00:010
58079983,1cyclictest663-21runrttasks23:46:503
58079982,2cyclictest21464-21ssh22:43:363
58079982,2cyclictest10121-21sort23:15:223
58079982,1cyclictest0-21swapper/323:55:283
58079982,1cyclictest0-21swapper/323:55:283
58079981,3cyclictest0-21swapper/300:36:063
58029983,4cyclictest0-21swapper/223:05:182
58029983,1cyclictest3874-21unixbench_multi00:10:202
58029983,1cyclictest20249-21sh23:21:392
58029983,1cyclictest0-21swapper/221:46:542
58029982,2cyclictest658-21snmpd23:54:362
58029982,2cyclictest658-21snmpd23:31:352
58029982,2cyclictest658-21snmpd20:51:542
58029982,2cyclictest5755-21open_inodes21:35:172
58029982,2cyclictest15106-21chrt19:27:342
58029982,2cyclictest13899-21ssh23:18:062
58029981,3cyclictest658-21snmpd21:25:132
58029980,4cyclictest18367-21grep19:35:152
58029980,3cyclictest275-21systemd-journal22:08:362
58029980,3cyclictest275-21systemd-journal22:08:362
58029980,2cyclictest275-21systemd-journal22:19:262
58029980,0cyclictest0-21swapper/220:56:042
57949987,1cyclictest22-21ksoftirqd/100:40:001
57909985,2cyclictest10839-21systemctl19:20:010
57909984,2cyclictest275-21systemd-journal20:45:420
57909983,3cyclictest17874-40gzip00:00:010
57909980,7cyclictest31231-21ssh23:28:450
22617280,0sleep30-21swapper/321:45:213
58079974,2cyclictest504-21dbus-daemon21:32:443
58079973,3cyclictest658-21snmpd22:54:383
58079973,3cyclictest13314-21ntpq20:35:173
58079972,3cyclictest275-21systemd-journal20:50:583
58079972,2cyclictest658-21snmpd21:00:393
58079970,1cyclictest13428-21sort22:00:013
58029973,3cyclictest658-21snmpd20:36:152
58029973,3cyclictest504-21dbus-daemon23:04:372
58029973,3cyclictest3388-21expr00:30:132
58029973,3cyclictest32485-21cut22:30:162
58029972,3cyclictest275-21systemd-journal20:19:212
58029972,2cyclictest29046-21ssh22:48:052
58029972,1cyclictest27356-21date23:45:202
58029972,1cyclictest1682-21sh00:09:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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