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2026-08-21 - 11:19
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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 Fri Aug 21, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237592280248,19sleep20-21swapper/219:08:402
237682278252,17sleep10-21swapper/119:08:471
236632272240,22sleep00-21swapper/019:07:250
236352259227,21sleep30-21swapper/319:07:043
214232640,0sleep20-21swapper/222:12:192
68942630,0sleep30-21swapper/322:23:053
219072620,0sleep10-21swapper/123:10:281
20472610,0sleep10-21swapper/119:30:131
176592610,0sleep20-21swapper/222:49:182
39462600,1sleep20-21swapper/219:35:102
76742590,0sleep20-21swapper/221:25:172
33612590,0sleep30-21swapper/323:00:133
291262570,0sleep20-21swapper/221:38:182
286512570,0sleep20-21swapper/223:34:562
203652560,0sleep10-21swapper/120:10:161
32062550,0sleep10-21swapper/123:00:071
56202370,0sleep30-21swapper/323:40:133
60682150,0sleep00-21swapper/022:03:200
22912150,0sleep30-21swapper/322:59:363
242062140,0sleep20-21swapper/223:12:132
35652130,2sleep228-21ksoftirqd/221:42:122
302152130,0sleep10-21swapper/123:35:181
182642130,0sleep30-21swapper/323:47:383
182642130,0sleep30-21swapper/323:47:373
161882120,0sleep00-21swapper/022:09:410
17831290,0sleep20-21swapper/222:30:012
30980280,0sleep00-21swapper/000:34:270
29363280,0sleep20-21swapper/222:17:032
239699986,1cyclictest34-21ksoftirqd/300:00:013
239679984,3cyclictest275-21systemd-journal21:00:552
239629984,3cyclictest275-21systemd-journal20:57:171
239699975,1cyclictest34-21ksoftirqd/319:15:023
239699974,2cyclictest30727-21snmpd23:07:433
239699974,2cyclictest30727-21snmpd22:44:163
239699974,2cyclictest28989-21cron19:20:013
239699973,3cyclictest1614-21apt-get19:30:113
239699973,2cyclictest275-21systemd-journal00:00:553
239699973,1cyclictest0-21swapper/321:28:083
239699970,7cyclictest0-21swapper/322:04:273
239699970,3cyclictest20407-21apt23:30:013
239699970,0cyclictest0-21swapper/323:24:483
239679974,2cyclictest504-21dbus-daemon23:37:352
239679973,3cyclictest853-21ntpq00:35:172
239679973,3cyclictest275-21systemd-journal19:22:542
239679972,3cyclictest30285-21awk20:35:002
239679970,1cyclictest0-21swapper/223:15:132
239629971,5cyclictest31565-21idleruntime-cro19:25:011
239589974,2cyclictest30727-21snmpd21:34:190
239589974,2cyclictest12-21ksoftirqd/019:20:010
239589974,2cyclictest1-21systemd23:59:190
239589973,3cyclictest8670-21df_inode19:45:120
239589973,3cyclictest30727-21snmpd22:13:420
239589972,3cyclictest275-21systemd-journal19:15:010
239589970,5cyclictest11194-21dump-pmu-power23:05:000
22829270,0sleep30-21swapper/321:15:133
22273270,0sleep00-21swapper/000:10:010
239699966,0cyclictest0-21swapper/322:32:293
239699966,0cyclictest0-21swapper/300:07:013
239699963,2cyclictest7101-21cat00:20:133
239699963,2cyclictest5483-21sshd19:36:283
239699963,2cyclictest504-21dbus-daemon23:51:253
239699963,2cyclictest31884-21grep20:35:173
239699963,2cyclictest30727-21snmpd23:31:173
239699963,2cyclictest3027-21sh00:36:313
239699963,2cyclictest29398-21awk23:15:183
239699963,2cyclictest17260-21rm21:30:353
239699963,2cyclictest16935-21swap00:25:203
239699963,2cyclictest16678-21sshd20:02:103
239699963,2cyclictest16293-21ssh22:28:563
239699963,1cyclictest0-21swapper/322:47:033
239699962,3cyclictest6741-21cat19:40:143
239699962,3cyclictest32584-21date00:15:213
239699962,3cyclictest30727-21snmpd22:51:193
239699962,3cyclictest30727-21snmpd21:42:403
239699962,3cyclictest30727-21snmpd21:24:123
239699962,3cyclictest30727-21snmpd21:02:093
239699962,3cyclictest30727-21snmpd20:42:113
239699962,3cyclictest30727-21snmpd20:25:113
239699962,3cyclictest30727-21snmpd19:57:163
239699962,3cyclictest30727-21snmpd19:57:163
239699962,3cyclictest30727-21snmpd19:50:463
239699962,3cyclictest30727-21snmpd19:45:043
239699962,3cyclictest28827-21grep20:30:143
239699962,3cyclictest24723-21cat21:55:123
239699962,3cyclictest16430-21expr21:50:143
239699962,3cyclictest14994-21cat21:10:143
239699962,1cyclictest0-21swapper/323:13:103
239699962,1cyclictest0-21swapper/322:36:193
239699961,3cyclictest275-21systemd-journal21:09:563
239699960,6cyclictest0-21swapper/321:48:493
239699960,5cyclictest24493-21sh00:30:143
239679966,0cyclictest0-21swapper/221:17:222
239679963,2cyclictest8417-21rm00:00:472
239679963,2cyclictest663-21runrttasks23:40:122
239679963,2cyclictest504-21dbus-daemon23:55:192
239679963,2cyclictest504-21dbus-daemon21:13:032
239679963,2cyclictest504-21dbus-daemon20:45:532
239679963,2cyclictest504-21dbus-daemon20:08:462
239679963,2cyclictest31545-21grep21:20:132
239679963,2cyclictest30727-21snmpd00:32:102
239679963,2cyclictest22719-21sh22:32:292
239679963,2cyclictest19367-21ssh00:07:492
239679963,2cyclictest19212-21ssh23:48:222
239679963,2cyclictest19212-21ssh23:48:222
239679963,2cyclictest1632-21sh22:20:132
239679963,2cyclictest15824-21cut21:30:142
239679963,0cyclictest141rcu_preempt20:50:112
239679962,3cyclictest9537-21cat22:05:162
239679962,3cyclictest32686-21seq20:38:382
239679962,3cyclictest30727-21snmpd23:06:342
239679962,3cyclictest30727-21snmpd21:46:502
239679962,3cyclictest30727-21snmpd20:56:112
239679962,3cyclictest30727-21snmpd20:15:222
239679962,3cyclictest30727-21snmpd20:02:492
239679962,3cyclictest30727-21snmpd19:49:292
239679962,3cyclictest30727-21snmpd19:15:122
239679962,3cyclictest30727-21snmpd19:13:062
239679962,3cyclictest275-21systemd-journal23:52:092
239679962,3cyclictest275-21systemd-journal00:19:552
239679962,3cyclictest25666-21seq20:23:052
239679962,3cyclictest25244-21cut21:55:152
239679962,3cyclictest2220-21hostname19:30:132
239679962,1cyclictest0-21swapper/223:20:492
239679962,1cyclictest0-21swapper/222:40:112
239679961,4cyclictest0-21swapper/200:10:112
239679960,6cyclictest0-21swapper/223:28:002
239679960,6cyclictest0-21swapper/223:04:122
239679960,6cyclictest0-21swapper/221:50:492
239679960,0cyclictest0-21swapper/200:26:062
239629966,0cyclictest0-21swapper/120:35:231
239629965,1cyclictest6836-21ssh22:03:551
239629964,2cyclictest5789-21cron19:40:011
239629964,1cyclictest21510-21sed23:30:141
239629963,2cyclictest674-21lldpd00:12:391
239629963,2cyclictest5106-21ssh23:59:381
239629963,2cyclictest3213-21sh00:17:311
239629963,2cyclictest31495-21seq21:40:001
239629963,2cyclictest30727-21snmpd23:42:381
239629963,2cyclictest30727-21snmpd21:59:351
239629963,2cyclictest275-21systemd-journal21:05:001
239629963,2cyclictest275-21systemd-journal20:17:081
239629963,2cyclictest2637-21cron20:45:001
239629963,2cyclictest25830-21ssh21:16:281
239629963,2cyclictest19317-21sh22:10:421
239629963,2cyclictest17406-21ssh22:29:471
239629963,2cyclictest14863-21systemctl23:45:201
239629963,2cyclictest14863-21systemctl23:45:201
239629963,2cyclictest14630-21ssh23:25:361
239629963,2cyclictest14530-21sh22:46:561
239629963,2cyclictest1367-21ssh23:18:121
239629963,1cyclictest0-21swapper/100:30:541
239629962,3cyclictest5863-21cupsd00:00:581
239629962,3cyclictest4432-21cat23:20:111
239629962,3cyclictest30727-21snmpd22:56:161
239629962,3cyclictest30727-21snmpd22:37:451
239629962,3cyclictest30727-21snmpd22:20:211
239629962,3cyclictest30727-21snmpd22:19:341
239629962,3cyclictest30727-21snmpd21:43:221
239629962,3cyclictest30727-21snmpd21:13:181
239629962,3cyclictest30727-21snmpd20:20:191
239629962,3cyclictest30727-21snmpd19:28:541
239629962,3cyclictest30727-21snmpd19:12:451
239629962,3cyclictest275-21systemd-journal21:25:001
239629962,3cyclictest18899-21cat22:30:151
239629962,3cyclictest16504-21expr21:50:141
239629962,3cyclictest0-21swapper/121:27:071
239629960,6cyclictest0-21swapper/123:08:091
239629960,6cyclictest0-21swapper/121:47:481
239629960,6cyclictest0-21swapper/121:07:221
239629960,6cyclictest0-21swapper/100:21:091
239629960,0cyclictest0-21swapper/123:52:251
239629960,0cyclictest0-21swapper/122:05:581
239589966,0cyclictest0-21swapper/021:45:120
239589963,2cyclictest7590-21sh22:23:360
239589963,2cyclictest6932-21cat00:00:150
239589963,2cyclictest275-21systemd-journal20:13:210
239589963,2cyclictest275-21systemd-journal00:13:050
239589963,2cyclictest26970-21ssh21:55:560
239589963,2cyclictest24320-21ssh23:50:540
239589963,2cyclictest18190-21sh21:12:010
239589963,2cyclictest17802-21grep21:50:210
239589963,2cyclictest1638-21ntpq20:40:170
239589963,2cyclictest12245-21ssh00:23:030
239589963,2cyclictest11377-21sh22:45:160
239589963,1cyclictest0-21swapper/023:29:330
239589962,3cyclictest824-21ntp_kernel_pll_00:35:170
239589962,3cyclictest7411-21cat20:55:120
239589962,3cyclictest504-21dbus-daemon22:31:570
239589962,3cyclictest4510-21expr23:20:120
239589962,3cyclictest30727-21snmpd23:49:170
239589962,3cyclictest30727-21snmpd23:49:170
239589962,3cyclictest30727-21snmpd23:07:250
239589962,3cyclictest30727-21snmpd21:43:130
239589962,3cyclictest30727-21snmpd21:36:010
239589962,3cyclictest30727-21snmpd20:50:320
239589962,3cyclictest30727-21snmpd20:45:050
239589962,3cyclictest30727-21snmpd20:29:200
239589962,3cyclictest30727-21snmpd19:59:130
239589962,3cyclictest30727-21snmpd19:59:130
239589962,3cyclictest30727-21snmpd19:55:010
239589962,3cyclictest30727-21snmpd19:41:130
239589962,3cyclictest30727-21snmpd19:35:090
239589962,3cyclictest30727-21snmpd00:29:420
239589962,3cyclictest27768-21cstates22:55:120
239589962,3cyclictest275-21systemd-journal00:17:210
239589962,3cyclictest12481-21cat21:05:150
239589962,1cyclictest0-21swapper/023:37:240
239589962,1cyclictest0-21swapper/023:30:030
239589961,4cyclictest0-21swapper/023:10:110
239589961,3cyclictest275-21systemd-journal20:07:120
239589960,6cyclictest0-21swapper/022:16:140
239589960,5cyclictest8007-21ntp_states21:25:190
239589960,0cyclictest0-21swapper/022:44:090
239589960,0cyclictest0-21swapper/022:25:080
239699953,1cyclictest21666-21cpu20:15:113
239699952,2cyclictest5102-21find20:50:113
239699952,2cyclictest30727-21snmpd00:10:273
239699952,2cyclictest30040-21cat23:35:173
239699952,2cyclictest24541-21cat20:20:143
239699952,2cyclictest23732-21grep21:35:133
239699951,3cyclictest3555-21if_enp4s020:45:153
239699951,3cyclictest25348-21/usr/sbin/munin22:15:123
239699951,3cyclictest17842-21cat20:05:163
239699951,3cyclictest16977-21ssh22:10:063
239699951,2cyclictest674-21lldpd22:05:083
239699950,4cyclictest29582-21taskset19:20:113
239699950,4cyclictest21059-21sshd20:11:333
239699950,3cyclictest7312-21systemd-udevd20:55:063
239699950,1cyclictest31949-21cut19:25:133
239679955,0cyclictest0-21swapper/219:40:112
239679952,2cyclictest8930-21sh00:20:312
239679952,2cyclictest501-21in:imuxsock21:08:532
239679952,2cyclictest336-21ssh22:00:122
239679952,2cyclictest30727-21snmpd22:50:102
239679952,2cyclictest20072-21cat20:10:142
239679952,2cyclictest12988-21expr19:55:132
239679952,2cyclictest12988-21expr19:55:132
239679951,3cyclictest575-21/usr/sbin/munin19:25:192
239679951,3cyclictest30727-21snmpd20:40:112
239679951,3cyclictest30727-21snmpd19:54:402
239679951,3cyclictest27384-21/usr/sbin/munin22:55:122
239679951,3cyclictest26276-21ssh22:35:022
239679950,4cyclictest26259-21expr20:25:122
239629953,1cyclictest15358-11brltty22:40:171
239629952,2cyclictest7783-21sshd19:42:061
239629952,2cyclictest5403-21expr20:50:121
239629952,2cyclictest3850-21ntpq20:45:171
239629952,2cyclictest30727-21snmpd00:05:151
239629952,2cyclictest28281-21taskset20:30:031
239629952,2cyclictest27711-21cat19:15:161
239629952,2cyclictest17620-21cut20:05:151
239629952,2cyclictest15222-21wc21:30:121
239629952,2cyclictest15169-21cstates20:00:131
239629952,2cyclictest13004-21cat19:55:131
239629952,2cyclictest13004-21cat19:55:131
239629952,2cyclictest11181-21cat19:50:151
239629952,1cyclictest0-21swapper/122:50:051
239629950,4cyclictest8267-21/usr/sbin/munin19:45:171
239629950,4cyclictest32042-21ssh00:35:051
239629950,4cyclictest26067-21/usr/sbin/munin20:25:161
239629950,4cyclictest16220-21hwlatdetect00:25:151
239589953,1cyclictest95602sleep021:00:050
239589953,1cyclictest663-21runrttasks20:30:120
239589953,1cyclictest31604-21hddtemp_smartct21:20:130
239589953,1cyclictest31487-21cat20:35:140
239589953,1cyclictest29374-21rm23:15:180
239589952,2cyclictest30255-21cat19:20:140
239589952,2cyclictest24017-21cpuspeed_turbos20:20:120
239589952,2cyclictest22855-21cstates21:15:130
239589952,2cyclictest22163-21gltestperf20:15:130
239589952,2cyclictest0-21swapper/020:00:140
239589951,3cyclictest5224-21ssh23:40:120
239589951,3cyclictest30727-21snmpd19:25:090
239589951,3cyclictest27253-21cat22:35:140
239589951,3cyclictest1588-21/usr/sbin/munin19:30:120
239589950,4cyclictest19020-21/usr/sbin/munin22:50:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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