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2026-08-09 - 08:49
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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 Sun Aug 09, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
254172298268,19sleep20-21swapper/219:08:162
255522284257,18sleep10-21swapper/119:10:001
251962268238,19sleep00-21swapper/019:05:400
254842265212,16sleep30-21swapper/319:09:103
225222610,0sleep00-21swapper/023:50:070
305392580,0sleep20-21swapper/221:18:492
299852550,0sleep00-21swapper/000:33:120
191992550,0sleep10-21swapper/123:08:521
173032550,0sleep10-21swapper/100:25:201
120402540,0sleep30-21swapper/323:24:163
10492540,0sleep30-21swapper/300:35:153
276132230,0sleep00-21swapper/023:13:590
9542190,2sleep122-21ksoftirqd/121:20:161
63042190,0sleep00-21swapper/000:19:180
327132180,0sleep10-21swapper/100:35:091
304712180,0sleep00-21swapper/023:35:140
96962160,0sleep30-21swapper/321:45:093
135622160,0sleep10-21swapper/121:46:561
232342140,0sleep30-21swapper/300:10:003
260972130,0sleep10-21swapper/120:20:141
23122130,0sleep10-21swapper/122:19:351
31631290,0sleep30-21swapper/322:36:393
27991290,0sleep30-21swapper/321:36:033
256579996,2cyclictest658-21snmpd00:23:560
8338280,0sleep20-21swapper/222:42:172
32246280,0sleep00-21swapper/022:56:420
256699985,2cyclictest15552-21diskmemload23:35:133
256699983,3cyclictest275-21systemd-journal19:40:013
256659982,3cyclictest27582-21munin-run20:25:002
256619986,1cyclictest6786-21users19:35:231
256619982,3cyclictest9452-21dump-pmu-power19:45:001
256579987,1cyclictest12-21ksoftirqd/000:30:000
256699976,1cyclictest6076-21ssh00:19:073
256699973,3cyclictest275-21systemd-journal22:02:323
256699973,3cyclictest15121-21apt-get00:05:153
256699972,4cyclictest504-11dbus-daemon21:03:573
256659976,1cyclictest1351-21ssh00:15:282
256659976,1cyclictest0-21swapper/223:13:252
256659973,3cyclictest9703-21apt19:45:132
256659973,3cyclictest7295-21diskstats20:50:132
256659970,2cyclictest18723-21munin-run22:10:012
256619977,0cyclictest0-21swapper/100:00:441
256619973,3cyclictest658-21snmpd23:16:101
256619973,3cyclictest504-21dbus-daemon22:10:011
256579974,2cyclictest24715-21df_inode21:15:130
256579973,3cyclictest658-21snmpd21:52:200
256579973,1cyclictest0-21swapper/021:47:490
256579973,1cyclictest0-21swapper/000:39:170
22326270,0sleep00-21swapper/000:09:360
256699966,0cyclictest0-21swapper/323:30:173
256699963,2cyclictest592-21rm23:55:393
256699963,2cyclictest5424-21cat23:00:173
256699963,2cyclictest504-21dbus-daemon19:31:443
256699963,2cyclictest504-21dbus-daemon19:31:443
256699963,2cyclictest29986-21sh21:18:233
256699963,2cyclictest275-21systemd-journal21:41:513
256699963,2cyclictest21438-21ssh21:51:223
256699963,2cyclictest16627-21sh23:26:113
256699963,1cyclictest0-21swapper/322:15:523
256699963,1cyclictest0-21swapper/300:00:083
256699962,3cyclictest9521-21ntpq21:25:183
256699962,3cyclictest8316-21expr00:20:143
256699962,3cyclictest658-21snmpd23:11:253
256699962,3cyclictest658-21snmpd22:58:033
256699962,3cyclictest658-21snmpd22:45:363
256699962,3cyclictest658-21snmpd22:40:033
256699962,3cyclictest658-21snmpd22:30:033
256699962,3cyclictest658-21snmpd21:23:573
256699962,3cyclictest658-21snmpd20:50:443
256699962,3cyclictest658-21snmpd20:46:203
256699962,3cyclictest658-21snmpd20:40:263
256699962,3cyclictest658-21snmpd20:37:443
256699962,3cyclictest658-21snmpd20:33:013
256699962,3cyclictest658-21snmpd20:28:373
256699962,3cyclictest658-21snmpd20:20:403
256699962,3cyclictest658-21snmpd20:15:133
256699962,3cyclictest658-21snmpd19:37:423
256699962,3cyclictest3384-21awk22:20:133
256699962,3cyclictest275-21systemd-journal21:05:313
256699962,3cyclictest25282-21cat00:30:153
256699962,3cyclictest20376-21sed22:10:213
256699962,3cyclictest16620-21expr21:10:153
256699962,1cyclictest0-21swapper/323:51:113
256699962,1cyclictest0-21swapper/323:47:243
256699962,1cyclictest0-21swapper/323:05:043
256699962,1cyclictest0-21swapper/322:05:043
256699962,1cyclictest0-21swapper/321:57:163
256699962,1cyclictest0-21swapper/300:25:193
256699960,6cyclictest0-21swapper/323:18:013
256699960,6cyclictest0-21swapper/322:25:353
256699960,0cyclictest0-21swapper/321:31:413
256659966,0cyclictest0-21swapper/222:32:242
256659966,0cyclictest0-21swapper/221:55:282
256659965,1cyclictest28-21ksoftirqd/221:25:012
256659963,2cyclictest8654-21sh23:21:382
256659963,2cyclictest7990-21ssh23:01:352
256659963,2cyclictest501-21in:imuxsock19:45:012
256659963,2cyclictest31849-21ssh22:56:232
256659963,2cyclictest24848-21uname00:10:182
256659963,2cyclictest24159-21memory20:15:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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