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2025-12-19 - 15:32
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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 all highest latencies:
System rackaslot8.osadl.org (updated Fri Dec 19, 2025 12:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320412298271,18sleep10-21swapper/107:05:431
322092288264,15sleep20-21swapper/207:07:522
320882276246,20sleep00-21swapper/007:06:180
323232262231,20sleep30-21swapper/307:09:063
57512160,0sleep20-21swapper/212:05:132
102102160,0sleep00-21swapper/008:40:150
286032140,0sleep20-21swapper/211:45:112
325099990,6cyclictest9803-21taskset11:00:232
325019993,3cyclictest11801-21munin-run07:35:010
325099984,2cyclictest9833-21apt-get07:30:102
325099982,4cyclictest14137-21basename07:40:012
325099982,2cyclictest19938-21processes07:50:182
325099981,5cyclictest31030-21taskset10:35:232
325099981,4cyclictest28-21ksoftirqd/208:00:162
325099981,3cyclictest10613-21awk08:40:182
325099980,5cyclictest14586-21taskset11:14:262
325019987,1cyclictest12-21ksoftirqd/012:20:000
325019984,3cyclictest275-21systemd-journal10:45:000
325019981,4cyclictest7983-21idleruntime-cro11:00:000
325139973,3cyclictest658-21snmpd09:58:313
325139973,3cyclictest25547-21df09:15:123
325139970,1cyclictest0-21swapper/309:05:173
325099974,2cyclictest6240-21cron09:45:022
325099974,2cyclictest26070-21apt-get08:05:012
325099973,3cyclictest5129-21plymouth07:20:022
325099973,3cyclictest29200-21apt10:35:002
325099973,3cyclictest275-21systemd-journal12:35:012
325099973,3cyclictest27076-21systemctl09:19:232
325099973,3cyclictest2556-21turbostat.cron12:00:002
325099973,3cyclictest23844-21cron11:35:002
325099973,3cyclictest2262-21latency_hist07:15:022
325099973,3cyclictest16362-21latency_hist07:45:002
325099973,3cyclictest16218-21cron12:30:012
325099973,3cyclictest1267-21cron10:45:012
325099972,4cyclictest0-21swapper/210:15:122
325099972,3cyclictest275-21systemd-journal07:20:012
325099972,1cyclictest9747-21kernelversion09:50:152
325099971,3cyclictest28-21ksoftirqd/211:40:162
325099970,5cyclictest9371-21taskset07:27:532
325099970,5cyclictest31407-21taskset09:27:162
325099970,3cyclictest6496-21tune2fs10:55:152
325099970,3cyclictest16993-21switchtime10:05:192
325049973,3cyclictest658-21snmpd07:43:311
325049973,3cyclictest504-21dbus-daemon12:40:001
325049973,3cyclictest275-21systemd-journal09:21:211
325049973,3cyclictest275-21systemd-journal09:21:211
325049973,3cyclictest275-21systemd-journal09:07:591
325049973,3cyclictest14189-21cat10:00:131
325019974,2cyclictest9474-21sshd12:14:320
325019973,3cyclictest658-21snmpd10:38:010
325019971,3cyclictest2600-21idleruntime-cro12:00:000
325139963,2cyclictest275-21systemd-journal10:44:263
325139963,2cyclictest275-21systemd-journal09:25:303
325139963,2cyclictest23695-21tr10:20:163
325139963,2cyclictest1473-21memory08:20:163
325139962,3cyclictest658-21snmpd12:35:283
325139962,3cyclictest658-21snmpd12:22:483
325139962,3cyclictest658-21snmpd12:10:303
325139962,3cyclictest658-21snmpd11:58:383
325139962,3cyclictest658-21snmpd11:35:083
325139962,3cyclictest658-21snmpd11:00:353
325139962,3cyclictest658-21snmpd10:59:493
325139962,3cyclictest658-21snmpd10:38:403
325139962,3cyclictest658-21snmpd10:32:213
325139962,3cyclictest658-21snmpd10:26:453
325139962,3cyclictest658-21snmpd10:09:243
325139962,3cyclictest658-21snmpd08:47:123
325139962,3cyclictest658-21snmpd08:15:203
325139962,3cyclictest658-21snmpd08:10:533
325139962,3cyclictest658-21snmpd07:54:053
325139962,3cyclictest658-21snmpd07:25:563
325139962,3cyclictest560-21gdbus09:40:053
325139962,3cyclictest4163-21forks10:50:133
325139962,3cyclictest2863-21cat09:35:163
325139962,3cyclictest275-21systemd-journal12:31:383
325139962,3cyclictest26526-21fschecks_count08:05:143
325139962,3cyclictest17509-21expr11:20:153
325139962,3cyclictest17509-21expr11:20:143
325139962,3cyclictest16736-21grep07:45:123
325139962,3cyclictest11052-21grep07:30:193
325139960,2cyclictest27443-21/usr/sbin/munin09:20:203
325139960,2cyclictest27443-21/usr/sbin/munin09:20:203
325099966,0cyclictest0-21swapper/208:15:012
325099963,2cyclictest8488-21awk09:50:012
325099963,2cyclictest504-21dbus-daemon11:15:152
325099963,2cyclictest20678-21idleruntime-cro12:40:012
325099963,2cyclictest1984-21tune2fs10:45:152
325099963,2cyclictest1611-21ntpq08:20:182
325099963,2cyclictest12394-21smartctl08:45:132
325099963,2cyclictest0-21swapper/208:10:022
325099962,3cyclictest9545-21turbostat.cron12:15:012
325099962,3cyclictest658-21snmpd09:00:122
325099962,3cyclictest658-21snmpd08:55:002
325099962,3cyclictest658-21snmpd07:55:532
325099962,3cyclictest6074-21ntp_states08:30:172
325099962,3cyclictest504-21dbus-daemon08:56:192
325099962,3cyclictest3235-21expr08:25:132
325099962,3cyclictest3115-21/usr/sbin/munin12:00:132
325099962,3cyclictest21681-21cut11:30:012
325099962,3cyclictest20894-21expr09:05:122
325099962,3cyclictest18617-21unixbench_multi11:20:222
325099962,3cyclictest18617-21unixbench_multi11:20:222
325099962,3cyclictest18430-21expr10:10:122
325099962,3cyclictest14540-21pmu-power10:00:162
325099962,3cyclictest12220-21ntp_states09:55:162
325099962,3cyclictest10171-21df12:15:132
325099961,4cyclictest0-21swapper/209:10:122
325099961,2cyclictest30768-21acpi11:50:112
325099961,2cyclictest1157-21runrttasks09:31:252
325099961,1cyclictest28-21ksoftirqd/210:25:142
325099961,1cyclictest28-21ksoftirqd/209:35:022
325099961,1cyclictest13425-21wc12:20:202
325099960,4cyclictest18232-21taskset07:46:012
325099960,4cyclictest12093-21taskset11:06:152
325099960,2cyclictest3965-21cstates10:50:132
325099960,2cyclictest28752-21grep09:20:192
325099960,2cyclictest28752-21grep09:20:192
325099960,2cyclictest24109-21apt-get11:35:112
325049966,0cyclictest0-21swapper/110:50:181
325049963,2cyclictest951-21expr11:55:141
325049963,2cyclictest8132-21cut12:10:131
325049963,2cyclictest658-21snmpd08:40:481
325049963,2cyclictest5148-21basename07:20:011
325049963,2cyclictest504-21dbus-daemon09:36:461
325049963,2cyclictest275-21systemd-journal09:10:051
325049962,3cyclictest658-21snmpd11:07:101
325049962,3cyclictest658-21snmpd10:55:191
325049962,3cyclictest658-21snmpd10:20:491
325049962,3cyclictest658-21snmpd10:06:271
325049962,3cyclictest658-21snmpd09:29:231
325049962,3cyclictest658-21snmpd08:30:201
325049962,3cyclictest658-21snmpd08:07:151
325049962,3cyclictest658-21snmpd07:45:591
325049962,3cyclictest658-21snmpd07:35:401
325049962,3cyclictest560-21gdbus10:00:001
325049962,3cyclictest31067-21expr11:50:131
325049962,3cyclictest25830-21cat09:15:151
325049962,3cyclictest16908-21fschecks_count12:30:131
325049962,3cyclictest12429-21diskstats12:20:131
325019966,0cyclictest0-21swapper/008:15:120
325019963,2cyclictest5345-21basename12:05:110
325019963,2cyclictest504-21dbus-daemon09:05:550
325019963,2cyclictest504-21dbus-daemon08:32:580
325019963,2cyclictest3678-21taskset09:36:150
325019963,2cyclictest275-21systemd-journal10:01:230
325019963,2cyclictest275-21systemd-journal09:59:100
325019963,2cyclictest26790-21sshd09:16:040
325019963,2cyclictest22141-21expr11:30:150
325019963,2cyclictest14411-21sh08:50:150
325019963,1cyclictest141rcu_preempt11:10:130
325019962,3cyclictest7810-21cat07:25:120
325019962,3cyclictest658-21snmpd12:39:150
325019962,3cyclictest658-21snmpd12:28:330
325019962,3cyclictest658-21snmpd11:40:300
325019962,3cyclictest658-21snmpd11:36:480
325019962,3cyclictest658-21snmpd10:51:250
325019962,3cyclictest658-21snmpd10:45:490
325019962,3cyclictest658-21snmpd09:43:320
325019962,3cyclictest658-21snmpd08:58:130
325019962,3cyclictest658-21snmpd08:36:500
325019962,3cyclictest658-21snmpd07:57:240
325019962,3cyclictest658-21snmpd07:53:180
325019962,3cyclictest658-21snmpd07:37:170
325019962,3cyclictest658-21snmpd07:10:520
325019962,3cyclictest560-21gdbus11:20:000
325019962,3cyclictest29282-21cat08:10:150
325019962,3cyclictest27656-21grep10:30:130
325019962,3cyclictest275-21systemd-journal11:55:010
325019962,3cyclictest275-21systemd-journal08:29:380
325019962,3cyclictest2617-21cat07:15:010
325019962,3cyclictest23060-21expr10:20:140
325019962,3cyclictest12332-21expr12:20:130
325019962,3cyclictest12129-21cat08:45:130
325019961,3cyclictest17721-21munin-run10:10:010
325019961,1cyclictest141rcu_preempt09:04:030
325019960,5cyclictest9018-21/usr/sbin/munin09:50:180
325019960,2cyclictest29665-21/usr/sbin/munin09:25:160
325139953,1cyclictest31257-21fschecks_time11:50:133
325139953,1cyclictest18876-21df09:00:123
325139953,1cyclictest1302-21chrt09:33:153
325139952,2cyclictest7604-21expr08:35:133
325139952,2cyclictest7177-21cat09:45:173
325139952,2cyclictest7157-21taskset12:08:213
325139952,2cyclictest674-21lldpd10:10:123
325139952,2cyclictest658-21snmpd11:30:083
325139952,2cyclictest658-21snmpd08:25:023
325139952,2cyclictest658-21snmpd08:00:083
325139952,2cyclictest658-21snmpd07:35:073
325139952,2cyclictest658-21snmpd07:10:233
325139952,2cyclictest6277-21mailstats08:30:183
325139952,2cyclictest5595-21cat07:20:123
325139952,2cyclictest3619-21tune2fs07:15:143
325139952,2cyclictest27153-21ls11:40:163
325139952,2cyclictest2416-21expr10:45:163
325139952,2cyclictest21802-21latency07:55:153
325139952,2cyclictest20890-21expr10:15:133
325139952,2cyclictest20213-21gltestperf11:25:163
325139952,2cyclictest15368-21fschecks_time11:15:143
325139952,2cyclictest15069-21cat07:40:163
325139952,2cyclictest10936-21which12:15:173
325139952,2cyclictest10686-21expr11:05:123
325139952,2cyclictest10240-21cat08:40:163
325139951,3cyclictest3533-21/usr/sbin/munin12:00:133
325139951,3cyclictest28751-21cstates11:45:123
325139951,3cyclictest23299-21expr09:10:133
325139951,3cyclictest16983-21expr08:55:163
325139951,3cyclictest14930-21cat12:25:133
325139951,3cyclictest14710-21mailstats10:00:183
325139951,3cyclictest14213-21expr08:50:133
325139951,2cyclictest34-21ksoftirqd/311:10:183
325139950,1cyclictest0-21swapper/309:50:013
325099952,2cyclictest658-21snmpd08:35:142
325099952,2cyclictest22861-21wc10:20:122
325049953,1cyclictest3605-21kernelversion08:25:141
325049953,1cyclictest29865-21grep10:35:141
325049953,1cyclictest22002-21tr11:30:141
325049952,2cyclictest9244-21cat09:50:121
325049952,2cyclictest8284-21cat07:25:151
325049952,2cyclictest8015-21cat08:35:151
325049952,2cyclictest674-21lldpd10:30:141
325049952,2cyclictest674-21lldpd09:40:251
325049952,2cyclictest663-21runrttasks11:39:441
325049952,2cyclictest658-21snmpd08:01:091
325049952,2cyclictest491-21systemd-logind10:15:061
325049952,2cyclictest28428-21cat08:10:011
325049952,2cyclictest27006-21if_err_enp4s011:40:151
325049952,2cyclictest2589-21proc_pri10:45:181
325049952,2cyclictest2560-21taskset08:24:081
325049952,2cyclictest20619-21ntp_states11:25:191
325049952,2cyclictest18185-21cat10:10:011
325049952,2cyclictest17497-21expr11:20:141
325049952,2cyclictest17497-21expr11:20:141
325049952,2cyclictest16423-21cut08:55:131
325049952,2cyclictest16261-21grep11:15:191
325049952,2cyclictest15252-21sed12:25:151
325049952,2cyclictest1-21systemd07:50:011
325049952,2cyclictest12034-21expr08:45:121
325049952,2cyclictest11317-21unixbench_multi07:30:191
325049951,3cyclictest6786-21expr09:45:141
325049951,3cyclictest658-21snmpd11:47:061
325049951,3cyclictest658-21snmpd11:10:071
325049951,3cyclictest658-21snmpd10:40:411
325049951,3cyclictest658-21snmpd09:30:441
325049951,3cyclictest658-21snmpd07:20:131
325049951,3cyclictest6019-21cat12:05:161
325049951,3cyclictest275-21systemd-journal08:18:541
325049951,3cyclictest25675-21cat10:25:161
325049951,3cyclictest21174-21expr07:55:131
325049951,3cyclictest1432-21find07:10:181
325049951,3cyclictest10385-21sed12:15:131
325049950,4cyclictest8217-21/usr/sbin/munin11:00:131
325049950,3cyclictest275-21systemd-journal12:01:591
325049950,1cyclictest14002-21/usr/sbin/munin08:50:161
325049950,0cyclictest0-21swapper/109:02:591
325019953,1cyclictest0-21swapper/008:00:000
325019952,2cyclictest9498-21sed11:00:200
325019952,2cyclictest837-21grep08:20:130
325019952,2cyclictest7112-21hddtemp_smartct09:45:160
325019952,2cyclictest658-21snmpd11:45:030
325019952,2cyclictest658-21snmpd11:25:150
325019952,2cyclictest658-21snmpd07:20:040
325019952,2cyclictest27957-21sshd08:08:520
325019952,2cyclictest25264-21expr10:25:130
325019952,2cyclictest17523-21sh11:20:150
325019952,2cyclictest17523-21sh11:20:150
325019952,2cyclictest17155-21cat12:30:140
325019952,2cyclictest14373-21taskset07:40:100
325019952,2cyclictest11118-21/usr/sbin/munin11:05:140
325019951,3cyclictest658-21snmpd09:10:070
325019951,3cyclictest27786-21expr09:20:130
325019951,3cyclictest27786-21expr09:20:130
325019951,3cyclictest18877-21cut10:10:150
325019951,3cyclictest1489-21/usr/sbin/munin09:35:000
325019950,5cyclictest0-21swapper/010:15:020
325019950,3cyclictest275-21systemd-journal12:00:000
325019950,3cyclictest275-21systemd-journal07:45:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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