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2026-03-24 - 12:49
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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 376 highest latencies:
System rackaslot8.osadl.org (updated Tue Mar 24, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
159692306276,19sleep20-21swapper/219:08:062
160862282255,18sleep10-21swapper/119:09:291
159082277246,20sleep00-21swapper/019:07:240
158142271239,21sleep30-21swapper/319:06:223
184772630,0sleep00-21swapper/021:35:580
216862610,0sleep10-21swapper/123:15:181
284572600,0sleep328450-21perf23:20:013
131282580,0sleep10-21swapper/122:50:321
297642570,0sleep20-21swapper/200:38:232
120972570,0sleep20-21swapper/222:50:172
115442570,0sleep20-21swapper/222:10:572
170542550,0sleep30-21swapper/323:51:193
4842540,0sleep00-21swapper/022:43:380
186202530,0sleep10-21swapper/100:31:101
292932500,0sleep00-21swapper/021:23:240
218692260,0sleep10-21swapper/100:14:201
153492200,0sleep20-21swapper/223:11:272
200022180,0sleep00-21swapper/023:34:190
66082140,0sleep00-21swapper/022:46:540
259512140,0sleep00-21swapper/020:40:130
310042130,0sleep30-21swapper/321:24:443
320862120,0sleep10-21swapper/123:02:171
211912110,0sleep10-21swapper/122:16:561
168342110,0sleep10-21swapper/121:35:141
1622899109,1cyclictest28-21ksoftirqd/222:00:022
126162100,0chrt0-21swapper/223:30:012
7355290,0chrt0-21swapper/023:45:200
7355290,0chrt0-21swapper/023:45:200
162319992,5cyclictest141rcu_preempt22:05:563
162289993,3cyclictest25062-21munin-run20:40:002
162289990,8cyclictest30339-21cat20:50:142
162209991,5cyclictest22757-21basename00:15:000
5032280,0sleep30-21swapper/300:04:083
22529280,0sleep30-21swapper/300:14:503
2207280,0sleep10-21swapper/122:44:551
162319987,1cyclictest34-21ksoftirqd/322:35:013
162319984,2cyclictest275-21systemd-journal23:05:233
162319983,3cyclictest275-21systemd-journal21:57:403
162289980,7cyclictest0-21swapper/222:40:182
162259986,1cyclictest14361-21taskset22:32:241
162259983,3cyclictest275-21systemd-journal23:25:011
162259982,4cyclictest13639-21munin-run20:15:001
3302270,0sleep30-21swapper/321:46:273
162319973,3cyclictest658-21snmpd23:42:173
162319973,3cyclictest658-21snmpd19:54:263
162319973,3cyclictest658-21snmpd19:31:343
162319973,3cyclictest504-21dbus-daemon19:10:373
162319973,3cyclictest12622-21ntpq20:10:173
162319973,2cyclictest491-21systemd-logind20:45:013
162319972,3cyclictest275-21systemd-journal20:50:063
162289976,1cyclictest28-21ksoftirqd/222:40:012
162289975,1cyclictest18323-21ssh00:11:372
162289973,3cyclictest504-21dbus-daemon23:40:012
162259974,2cyclictest504-21dbus-daemon21:40:181
162259973,3cyclictest658-21snmpd22:03:241
162259970,4cyclictest14446-21idleruntime-cro00:10:001
162259970,1cyclictest9683-21expr22:10:161
162259970,1cyclictest6305-21diskmemload23:10:391
162209973,3cyclictest658-21snmpd00:02:150
162209973,3cyclictest504-21dbus-daemon21:53:040
162209973,3cyclictest491-21systemd-logind19:44:540
162209973,3cyclictest275-21systemd-journal22:11:000
162209972,3cyclictest2207-21ls19:50:010
162209971,4cyclictest8886-21awk20:05:010
162209971,3cyclictest7098-21sh21:30:000
13579270,1sleep10-21swapper/121:52:581
162319965,1cyclictest34-21ksoftirqd/300:30:003
162319965,1cyclictest34-21ksoftirqd/300:10:003
162319965,1cyclictest34-21ksoftirqd/300:00:003
162319963,2cyclictest7884-21ssh22:28:483
162319963,2cyclictest5853-21head21:05:213
162319963,2cyclictest31448-21ssh23:01:473
162319963,2cyclictest275-21systemd-journal19:38:243
162319963,2cyclictest2084-21sh23:23:173
162319963,2cyclictest17610-21sed21:35:193
162319963,1cyclictest0-21swapper/323:33:533
162319963,1cyclictest0-21swapper/322:03:193
162319962,3cyclictest658-21snmpd23:35:083
162319962,3cyclictest658-21snmpd23:25:023
162319962,3cyclictest658-21snmpd22:48:193
162319962,3cyclictest658-21snmpd22:44:403
162319962,3cyclictest658-21snmpd22:15:433
162319962,3cyclictest658-21snmpd21:52:423
162319962,3cyclictest658-21snmpd21:43:143
162319962,3cyclictest658-21snmpd21:32:443
162319962,3cyclictest658-21snmpd20:33:573
162319962,3cyclictest658-21snmpd19:57:203
162319962,3cyclictest658-21snmpd19:41:473
162319962,3cyclictest275-21systemd-journal23:46:583
162319962,3cyclictest275-21systemd-journal23:46:583
162319962,3cyclictest275-21systemd-journal21:17:583
162319962,3cyclictest2309-21ls19:50:013
162319962,3cyclictest1541-21seq20:56:383
162319962,3cyclictest11322-11brltty20:35:513
162319962,1cyclictest0-21swapper/323:12:053
162319962,1cyclictest0-21swapper/322:56:393
162319962,1cyclictest0-21swapper/300:37:203
162319962,1cyclictest0-21swapper/300:31:003
162319960,6cyclictest0-21swapper/322:12:233
162319960,6cyclictest0-21swapper/300:21:563
162319960,6cyclictest0-21swapper/300:17:583
162319960,5cyclictest20251-21ntp_states19:15:173
162289965,1cyclictest25141-21ssh00:15:282
162289963,2cyclictest658-21snmpd21:00:252
162289963,2cyclictest658-21snmpd20:07:262
162289963,2cyclictest590-21head21:25:182
162289963,2cyclictest30500-40gzip00:00:012
162289963,2cyclictest29925-11brltty19:40:192
162289963,2cyclictest28844-21rm23:58:582
162289963,2cyclictest275-21systemd-journal21:23:232
162289963,2cyclictest275-21systemd-journal19:32:042
162289963,2cyclictest26537-21ssh21:40:482
162289963,2cyclictest21841-21ssh22:55:502
162289963,2cyclictest17153-21gzip21:35:172
162289962,3cyclictest8735-21sshd20:03:232
162289962,3cyclictest7003-21tr23:45:192
162289962,3cyclictest7003-21tr23:45:192
162289962,3cyclictest658-21snmpd21:51:422
162289962,3cyclictest658-21snmpd21:19:282
162289962,3cyclictest658-21snmpd21:12:012
162289962,3cyclictest658-21snmpd20:58:252
162289962,3cyclictest658-21snmpd20:31:242
162289962,3cyclictest658-21snmpd20:18:142
162289962,3cyclictest658-21snmpd19:55:552
162289962,3cyclictest658-21snmpd19:45:112
162289962,3cyclictest658-21snmpd19:26:252
162289962,3cyclictest658-21snmpd19:21:282
162289962,3cyclictest658-21snmpd00:30:282
162289962,3cyclictest658-21snmpd00:20:122
162289962,3cyclictest658-21snmpd00:05:422
162289962,3cyclictest29617-21sshd20:47:402
162289962,3cyclictest1-21systemd23:52:232
162289962,2cyclictest4372-21taskset21:47:152
162289962,2cyclictest28341-1kworker/u9:000:25:342
162289961,3cyclictest275-21systemd-journal23:32:432
162289960,6cyclictest0-21swapper/223:00:102
162289960,6cyclictest0-21swapper/222:30:202
162289960,6cyclictest0-21swapper/222:15:042
162289960,4cyclictest10671-21sh22:50:002
162289960,3cyclictest31004-21find23:40:182
162289960,0cyclictest0-21swapper/223:21:352
162259966,0cyclictest0-21swapper/100:21:221
162259963,2cyclictest658-21snmpd21:19:071
162259963,2cyclictest658-21snmpd19:43:101
162259963,2cyclictest3848-21ssh22:25:421
162259963,2cyclictest30881-21ls23:40:181
162259963,2cyclictest275-21systemd-journal23:30:001
162259963,2cyclictest275-21systemd-journal20:03:241
162259963,2cyclictest275-21systemd-journal19:15:011
162259963,2cyclictest275-21systemd-journal00:36:401
162259963,2cyclictest24096-21rm22:38:311
162259963,2cyclictest19847-21sshd21:56:231
162259963,2cyclictest1408-21cat22:05:141
162259963,2cyclictest1282-21ssh21:25:251
162259962,3cyclictest658-21snmpd23:56:091
162259962,3cyclictest658-21snmpd23:53:481
162259962,3cyclictest658-21snmpd23:46:241
162259962,3cyclictest658-21snmpd23:46:241
162259962,3cyclictest658-21snmpd23:28:141
162259962,3cyclictest658-21snmpd21:31:191
162259962,3cyclictest658-21snmpd21:07:401
162259962,3cyclictest658-21snmpd20:55:401
162259962,3cyclictest658-21snmpd20:44:051
162259962,3cyclictest658-21snmpd20:24:291
162259962,3cyclictest658-21snmpd19:55:021
162259962,3cyclictest658-21snmpd19:48:411
162259962,3cyclictest504-21dbus-daemon20:35:001
162259962,3cyclictest504-21dbus-daemon00:17:041
162259962,3cyclictest275-21systemd-journal21:24:131
162259962,3cyclictest275-21systemd-journal21:11:171
162259960,6cyclictest0-21swapper/123:08:221
162259960,6cyclictest0-21swapper/100:25:191
162259960,2cyclictest27837-21/usr/sbin/munin20:45:201
162259960,0cyclictest0-21swapper/122:55:291
162259960,0cyclictest0-21swapper/122:47:261
162209963,2cyclictest8553-21sh21:10:220
162209963,2cyclictest8012-21ssh00:25:160
162209963,2cyclictest658-21snmpd21:44:390
162209963,2cyclictest658-21snmpd21:05:070
162209963,2cyclictest658-21snmpd00:35:430
162209963,2cyclictest658-21snmpd00:08:570
162209963,2cyclictest504-21dbus-daemon21:45:090
162209963,2cyclictest504-21dbus-daemon21:35:000
162209963,2cyclictest30399-21ssh23:01:000
162209963,2cyclictest27689-21taskset19:32:110
162209963,2cyclictest21242-21ssh22:55:210
162209963,2cyclictest12602-21threads22:50:200
162209962,3cyclictest658-21snmpd23:36:380
162209962,3cyclictest658-21snmpd23:16:250
162209962,3cyclictest658-21snmpd22:27:340
162209962,3cyclictest658-21snmpd22:20:030
162209962,3cyclictest658-21snmpd22:03:210
162209962,3cyclictest658-21snmpd21:17:540
162209962,3cyclictest658-21snmpd20:24:080
162209962,3cyclictest658-21snmpd20:15:380
162209962,3cyclictest658-21snmpd20:10:290
162209962,3cyclictest658-21snmpd20:05:050
162209962,3cyclictest658-21snmpd19:15:070
162209962,3cyclictest658-21snmpd00:32:340
162209962,3cyclictest30736-21cat20:50:170
162209962,3cyclictest2793-21cat21:00:160
162209962,3cyclictest22731-21expr23:55:130
162209962,3cyclictest22188-21cat19:20:150
162209962,3cyclictest18644-21expr22:35:130
162209962,3cyclictest17902-21awk19:10:180
162209962,3cyclictest1656-21tail22:05:150
162209962,3cyclictest10574-21cat22:30:130
162209962,2cyclictest5190-21awk23:45:010
162209960,6cyclictest0-21swapper/023:25:240
162209960,5cyclictest18331-21/usr/sbin/munin20:25:130
162319953,1cyclictest9521-21cpuspeed_turbos20:05:123
162319953,1cyclictest32484-21sed21:25:143
162319953,1cyclictest22524-21sed19:20:183
162319953,1cyclictest16109-21find20:20:133
162319953,1cyclictest0-21swapper/321:10:173
162319952,2cyclictest7160-21expr20:00:143
162319952,2cyclictest3435-21timerandwakeup21:00:193
162319952,2cyclictest26917-21taskset20:40:353
162319952,2cyclictest23939-21ls19:25:133
162319952,2cyclictest19388-21awk20:25:193
162319951,3cyclictest0-21swapper/322:50:073
162319950,4cyclictest25488-21ssh22:20:013
162319950,4cyclictest14513-21idleruntime20:15:143
162319950,1cyclictest331rcuc/322:35:123
162289953,2cyclictest51250irq/139-enp4s0-23:15:122
162289953,2cyclictest2093-21fschecks_count22:25:142
162289953,1cyclictest28618-21fschecks_count19:35:152
162289953,1cyclictest24525-21date22:00:022
162289952,2cyclictest8439-21ssh21:30:162
162289952,2cyclictest658-21snmpd20:29:332
162289952,2cyclictest658-21snmpd20:20:052
162289952,2cyclictest658-21snmpd19:15:132
162289952,2cyclictest4570-21expr21:05:132
162289952,2cyclictest4474-21cat23:05:152
162289952,2cyclictest3701-21cat19:50:182
162289952,2cyclictest26229-21fschecks_count22:20:152
162289951,3cyclictest658-21snmpd20:10:112
162289951,3cyclictest25837-21/usr/sbin/munin20:40:122
162289951,3cyclictest16547-21cat19:10:102
162289950,4cyclictest0-21swapper/222:05:162
162259952,2cyclictest9318-21sort20:05:011
162259952,2cyclictest658-21snmpd21:45:121
162259952,2cyclictest658-21snmpd19:25:041
162259952,2cyclictest3731-21chrt21:01:001
162259952,2cyclictest28396-21cat19:35:131
162259952,2cyclictest27232-21cat19:30:191
162259952,2cyclictest26214-21awk22:20:151
162259952,2cyclictest22478-21ntpq19:20:171
162259952,2cyclictest22104-21cat23:35:141
162259952,2cyclictest2187-21cron19:50:011
162259952,2cyclictest20828-21gdbus20:30:011
162259952,2cyclictest19216-21missed_timers19:15:021
162259952,2cyclictest18354-21apt20:25:131
162259951,3cyclictest491-21systemd-logind20:52:321
162259951,3cyclictest0-21swapper/100:00:181
162259950,3cyclictest275-21systemd-journal20:18:001
162209953,1cyclictest3736-21acpi23:05:120
162209953,1cyclictest12394-21expr23:10:110
162209952,2cyclictest701-21missed_timers20:55:170
162209952,2cyclictest658-21snmpd23:20:020
162209952,2cyclictest658-21snmpd19:50:080
162209952,2cyclictest658-21snmpd19:35:100
162209952,2cyclictest658-21snmpd00:15:050
162209952,2cyclictest32443-21memory00:20:150
162209952,2cyclictest29925-11brltty19:55:200
162209952,2cyclictest27660-21cmp20:45:010
162209952,2cyclictest23375-21expr20:35:150
162209952,2cyclictest20368-21gpgv20:30:010
162209952,2cyclictest17121-21expr21:55:130
162209952,2cyclictest13855-21sh23:50:060
162209951,3cyclictest658-21snmpd22:15:060
162209951,3cyclictest25074-21ls19:25:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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