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2026-08-17 - 19:25
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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 Aug 17, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
155192288262,17sleep20-21swapper/207:07:122
155182268237,20sleep10-21swapper/107:07:111
156062263232,20sleep00-21swapper/007:08:190
155512253222,20sleep30-21swapper/307:07:373
172392810,0sleep30-21swapper/312:26:463
258642600,0sleep30-21swapper/309:40:163
281882570,0sleep20-21swapper/210:57:362
108312560,0sleep20-21swapper/212:04:192
165812550,0sleep30-21swapper/309:15:183
97172200,0sleep10-21swapper/111:44:241
164962200,0sleep00-21swapper/009:54:000
244412180,0sleep00-21swapper/011:33:500
179942160,0sleep00-21swapper/009:15:590
159792160,0sleep10-21swapper/109:53:371
83412150,0sleep10-21swapper/109:30:091
199732150,0sleep30-21swapper/311:30:293
154052150,0sleep20-21swapper/211:28:232
265352140,0sleep0131rcuc/007:30:170
326932130,0sleep20-21swapper/211:57:422
22802130,0sleep30-21swapper/311:01:063
206562130,0sleep00-21swapper/010:53:180
63772120,0sleep20-21swapper/211:22:592
244772100,0sleep20-21swapper/209:58:382
144792100,0sleep00-21swapper/009:14:430
158599994,3cyclictest275-21systemd-journal11:43:432
158599990,8cyclictest23312-21ssh11:32:592
158509992,4cyclictest24852-21cron09:40:000
3657280,0sleep30-21swapper/310:43:163
25400280,0sleep00-21swapper/009:20:190
158629984,3cyclictest275-21systemd-journal12:40:003
158629984,3cyclictest275-21systemd-journal11:09:273
158629984,3cyclictest275-21systemd-journal10:55:013
158549987,1cyclictest22-21ksoftirqd/112:05:001
158549985,3cyclictest30727-21snmpd11:36:401
158549980,1cyclictest8810-21taskset11:24:491
158509984,3cyclictest5547-21diskstats12:20:130
158509984,3cyclictest27274-21df10:00:140
158509983,3cyclictest275-21systemd-journal09:00:150
14351280,0sleep30-21swapper/309:52:233
23062270,0sleep10-21swapper/109:19:481
158629975,2cyclictest34-21ksoftirqd/312:00:013
158629973,3cyclictest275-21systemd-journal10:00:403
158629973,3cyclictest24540-21sed10:55:173
158629971,2cyclictest17362-21threads07:10:213
158599973,3cyclictest30727-21snmpd09:01:202
158599973,3cyclictest275-21systemd-journal09:45:252
158599973,3cyclictest275-21systemd-journal07:29:582
158599973,1cyclictest0-21swapper/212:14:572
158599972,3cyclictest275-21systemd-journal10:00:402
158549976,1cyclictest15140-21kworker/1:209:26:561
158549975,2cyclictest22-21ksoftirqd/109:10:011
158549974,2cyclictest30727-21snmpd12:12:201
158549973,3cyclictest504-21dbus-daemon09:50:011
158549970,4cyclictest24526-21ls11:15:011
158549970,1cyclictest5669-21ntp_states07:55:161
158509974,2cyclictest30727-21snmpd11:13:070
158509973,3cyclictest504-21dbus-daemon07:14:280
158509973,3cyclictest275-21systemd-journal08:05:010
158509973,3cyclictest275-21systemd-journal07:20:440
158509973,1cyclictest0-21swapper/012:01:050
1686260,0sleep20-21swapper/212:36:462
158629966,0cyclictest0-21swapper/310:28:163
158629963,2cyclictest6474-21ssh09:28:553
158629963,2cyclictest504-21dbus-daemon09:30:333
158629963,2cyclictest504-21dbus-daemon08:26:163
158629963,2cyclictest4126-21ssh09:46:033
158629963,2cyclictest31400-21ssh11:18:503
158629963,2cyclictest30727-21snmpd12:21:413
158629963,2cyclictest30727-21snmpd10:31:363
158629963,2cyclictest30727-21snmpd08:06:223
158629963,2cyclictest30727-21snmpd07:35:183
158629963,2cyclictest30727-21snmpd07:35:183
158629963,2cyclictest2808-21expr07:50:143
158629963,2cyclictest275-21systemd-journal10:15:153
158629963,2cyclictest26163-21sh10:37:103
158629963,2cyclictest22767-21sh11:51:333
158629963,2cyclictest21243-21tail12:10:143
158629963,2cyclictest17401-21awk08:20:173
158629963,2cyclictest13208-21ssh10:10:253
158629963,2cyclictest12726-21grep12:05:143
158629962,3cyclictest4601-21cat12:00:163
158629962,3cyclictest30727-21snmpd12:15:443
158629962,3cyclictest30727-21snmpd11:45:343
158629962,3cyclictest30727-21snmpd11:26:193
158629962,3cyclictest30727-21snmpd11:20:253
158629962,3cyclictest30727-21snmpd10:23:443
158629962,3cyclictest30727-21snmpd09:10:033
158629962,3cyclictest30727-21snmpd08:47:143
158629962,3cyclictest30727-21snmpd07:33:423
158629962,3cyclictest30727-21snmpd07:16:033
158629962,3cyclictest3039-21sensors_temp09:00:193
158629962,3cyclictest28134-21awk11:35:193
158629962,3cyclictest275-21systemd-journal11:42:033
158629962,3cyclictest19128-21cat09:55:173
158629962,3cyclictest12371-21df_inode08:10:133
158629962,3cyclictest0-21swapper/310:45:063
158629960,6cyclictest0-21swapper/311:12:323
158599966,0cyclictest0-21swapper/210:41:012
158599966,0cyclictest0-21swapper/209:39:542
158599963,2cyclictest8300-21sh10:08:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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