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2026-04-21 - 16:15
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rack4slot4.osadl.org (updated Tue Apr 21, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
101802810chrt46650irq/116-QMan10:48:553
101802810chrt46650irq/116-QMan10:48:553
101802810chrt46650irq/116-QMan10:48:553
71710rcu_preempt0-21swapper/210:22:362
71710rcu_preempt0-21swapper/210:22:362
71710rcu_preempt0-21swapper/210:22:362
71690rcu_preempt0-21swapper/210:17:312
71690rcu_preempt0-21swapper/210:17:312
71690rcu_preempt0-21swapper/010:00:120
71690rcu_preempt0-21swapper/010:00:120
71690rcu_preempt0-21swapper/010:00:120
71640rcu_preempt0-21swapper/009:44:250
71640rcu_preempt0-21swapper/009:44:250
71640rcu_preempt0-21swapper/009:44:250
71530rcu_preempt0-21swapper/011:13:050
71530rcu_preempt0-21swapper/011:13:050
855299511cyclictest1958-21snmpd12:23:282
855299511cyclictest1958-21snmpd12:23:282
8550994936cyclictest8566-21apt-get07:12:360
8550994936cyclictest8566-21apt-get07:12:360
8550994936cyclictest8566-21apt-get07:12:360
71490rcu_preempt0-21swapper/010:11:460
71490rcu_preempt0-21swapper/010:11:460
71490rcu_preempt0-21swapper/010:11:460
71470rcu_preempt0-21swapper/110:27:321
71470rcu_preempt0-21swapper/110:27:321
71470rcu_preempt0-21swapper/110:27:321
8550994625cyclictest23870-21/usr/sbin/munin08:07:380
8550994625cyclictest23870-21/usr/sbin/munin08:07:380
8550994623cyclictest1959-21runrttasks09:22:280
8550994623cyclictest1959-21runrttasks09:22:280
855399453cyclictest0-21swapper/312:31:493
855399453cyclictest0-21swapper/312:31:493
855399453cyclictest0-21swapper/312:31:493
855399451cyclictest27660-21kworker/u8:211:17:533
855399451cyclictest27660-21kworker/u8:211:17:533
855399451cyclictest27660-21kworker/u8:211:17:533
855399451cyclictest16367-21apt-get11:22:483
855399451cyclictest16367-21apt-get11:22:483
855399451cyclictest16367-21apt-get11:22:483
855299452cyclictest25896-21ssh11:38:372
855299452cyclictest25896-21ssh11:38:372
855299452cyclictest25896-21ssh11:38:372
8550994535cyclictest31655-21apt-get09:52:370
8550994535cyclictest31655-21apt-get09:52:370
8550994524cyclictest772-21users10:52:580
8550994524cyclictest772-21users10:52:580
8550994524cyclictest4130-21df08:52:400
8550994524cyclictest4130-21df08:52:400
8553994418cyclictest13654-21ntp_states10:17:503
8553994418cyclictest13654-21ntp_states10:17:503
8553994418cyclictest13654-21ntp_states10:17:503
855299448cyclictest32260-21ssh11:51:142
855299448cyclictest32260-21ssh11:51:142
8550994424cyclictest6382-21ssh10:04:170
8550994424cyclictest6382-21ssh10:04:170
8550994424cyclictest27396-21wc11:42:280
8550994424cyclictest27396-21wc11:42:280
8550994424cyclictest27396-21wc11:42:280
8550994424cyclictest21114-21memory09:32:480
8550994424cyclictest21114-21memory09:32:480
8550994424cyclictest21114-21memory09:32:480
8550994424cyclictest18455-21df07:47:410
8550994424cyclictest18455-21df07:47:410
8550994422cyclictest27231-21/usr/sbin/munin08:17:530
8550994422cyclictest27231-21/usr/sbin/munin08:17:530
8550994421cyclictest0-21swapper/009:07:440
8550994421cyclictest0-21swapper/009:07:440
8550994420cyclictest0-21swapper/012:11:290
8550994420cyclictest0-21swapper/012:11:290
8550994420cyclictest0-21swapper/012:11:290
855399433cyclictest0-21swapper/309:42:463
855399433cyclictest0-21swapper/309:42:463
855399433cyclictest0-21swapper/309:42:463
855399432cyclictest6729-21ntp_states12:02:513
855399432cyclictest6729-21ntp_states12:02:513
855399432cyclictest4802-21munin-run10:02:273
855399432cyclictest4802-21munin-run10:02:273
855399432cyclictest4802-21munin-run10:02:273
855399432cyclictest25255-21ntp_states11:37:523
855399432cyclictest25255-21ntp_states11:37:523
855399432cyclictest25255-21ntp_states11:37:523
855399432cyclictest22660-21ntp_states12:32:533
855399432cyclictest22660-21ntp_states12:32:533
855399432cyclictest22104-21diskstats11:32:423
855399432cyclictest22104-21diskstats11:32:423
855299433cyclictest0-21swapper/211:22:432
855299433cyclictest0-21swapper/211:22:432
855299433cyclictest0-21swapper/211:22:432
855299433cyclictest0-21swapper/207:57:492
855299433cyclictest0-21swapper/207:57:492
855299433cyclictest0-21swapper/207:57:492
855299432cyclictest26555-21df09:42:402
855299432cyclictest26555-21df09:42:402
855299432cyclictest26555-21df09:42:402
8552994317cyclictest28004-1ssh11:42:482
8552994317cyclictest28004-1ssh11:42:482
8552994317cyclictest28004-1ssh11:42:482
8550994323cyclictest2977-21/usr/sbin/munin10:57:440
8550994323cyclictest2977-21/usr/sbin/munin10:57:440
8550994323cyclictest28263-21diskstats08:22:420
8550994323cyclictest28263-21diskstats08:22:420
8550994323cyclictest1959-21runrttasks07:37:400
8550994323cyclictest1959-21runrttasks07:37:400
8550994323cyclictest1959-21runrttasks07:37:400
8550994322cyclictest6085-21ssh12:02:290
8550994322cyclictest6085-21ssh12:02:290
8550994322cyclictest22322-21latency_hist08:02:270
8550994322cyclictest22322-21latency_hist08:02:270
8550994322cyclictest22322-21latency_hist08:02:270
8550994322cyclictest13352-21diskstats10:17:420
8550994322cyclictest13352-21diskstats10:17:420
8550994322cyclictest13352-21diskstats10:17:420
8550994320cyclictest3330-1kworker/0:0H10:12:590
8550994320cyclictest3330-1kworker/0:0H10:12:590
8550994320cyclictest27603-21latency_hist12:42:310
8550994320cyclictest27603-21latency_hist12:42:310
8550994320cyclictest0-21swapper/011:09:290
8550994320cyclictest0-21swapper/011:09:290
8550994320cyclictest0-21swapper/008:12:440
8550994320cyclictest0-21swapper/008:12:440
8550994320cyclictest0-21swapper/008:12:440
8550994319cyclictest0-21swapper/009:02:440
8550994319cyclictest0-21swapper/009:02:440
8550994319cyclictest0-21swapper/009:02:440
8550994313cyclictest0-21swapper/011:49:270
8550994313cyclictest0-21swapper/011:49:270
71430rcu_preempt14160-21meminfo11:17:491
71430rcu_preempt14160-21meminfo11:17:491
71430rcu_preempt14160-21meminfo11:17:491
71430rcu_preempt0-21swapper/011:22:420
71430rcu_preempt0-21swapper/011:22:420
71430rcu_preempt0-21swapper/011:22:420
855399424cyclictest0-21swapper/309:47:503
855399424cyclictest0-21swapper/309:47:503
855399423cyclictest0-21swapper/311:31:243
855399423cyclictest0-21swapper/311:31:243
855399423cyclictest0-21swapper/311:31:243
855399423cyclictest0-21swapper/310:47:523
855399423cyclictest0-21swapper/310:47:523
855399423cyclictest0-21swapper/310:47:523
855399422cyclictest15376-21/usr/sbin/munin09:22:463
855399422cyclictest15376-21/usr/sbin/munin09:22:463
855399422cyclictest15376-21/usr/sbin/munin09:22:463
855399421cyclictest4970-21apt-get10:02:373
855399421cyclictest4970-21apt-get10:02:373
855399421cyclictest16633-21sendmail-msp12:22:573
855399421cyclictest16633-21sendmail-msp12:22:573
855299424cyclictest0-21swapper/210:42:532
855299424cyclictest0-21swapper/210:42:532
855299424cyclictest0-21swapper/210:42:532
855299423cyclictest31905-21df_inode09:52:422
855299423cyclictest31905-21df_inode09:52:422
855299423cyclictest0-21swapper/212:07:502
855299423cyclictest0-21swapper/212:07:502
855299423cyclictest0-21swapper/212:07:502
855299423cyclictest0-21swapper/212:03:402
855299423cyclictest0-21swapper/212:03:402
855299423cyclictest0-21swapper/211:53:302
855299423cyclictest0-21swapper/211:53:302
855299423cyclictest0-21swapper/210:27:582
855299423cyclictest0-21swapper/210:27:582
855299423cyclictest0-21swapper/210:27:582
855299422cyclictest8641-21ntp_states09:07:512
855299422cyclictest8641-21ntp_states09:07:512
855299422cyclictest22614-21df08:02:402
855299422cyclictest22614-21df08:02:402
855299422cyclictest22614-21df08:02:402
855299422cyclictest15831-21meminfo09:22:482
855299422cyclictest15831-21meminfo09:22:482
855299422cyclictest15831-21meminfo09:22:482
8552994218cyclictest17993-1kworker/2:3H09:40:282
8552994218cyclictest17993-1kworker/2:3H09:40:282
8552994218cyclictest17993-1kworker/2:3H09:40:282
8552994217cyclictest11215-21munin-run07:22:272
8552994217cyclictest11215-21munin-run07:22:272
8552994217cyclictest11215-21munin-run07:22:272
8550994221cyclictest6162-21/usr/sbin/munin12:02:350
8550994221cyclictest6162-21/usr/sbin/munin12:02:350
8550994220cyclictest22420-21ntp_states11:32:530
8550994220cyclictest22420-21ntp_states11:32:530
8550994220cyclictest1959-21runrttasks10:42:260
8550994220cyclictest1959-21runrttasks10:42:260
8550994220cyclictest1959-21runrttasks10:42:260
8550994220cyclictest0-21swapper/012:28:320
8550994220cyclictest0-21swapper/012:28:320
8550994220cyclictest0-21swapper/012:28:320
8550994220cyclictest0-21swapper/011:44:190
8550994220cyclictest0-21swapper/011:44:190
8550994220cyclictest0-21swapper/011:44:190
8550994220cyclictest0-21swapper/007:42:560
8550994220cyclictest0-21swapper/007:42:560
8550994220cyclictest0-21swapper/007:27:400
8550994220cyclictest0-21swapper/007:27:400
8550994220cyclictest0-21swapper/007:27:400
8550994219cyclictest0-21swapper/011:06:010
8550994219cyclictest0-21swapper/011:06:010
8550994219cyclictest0-21swapper/010:25:050
8550994219cyclictest0-21swapper/010:25:050
8550994219cyclictest0-21swapper/010:25:050
8550994219cyclictest0-21swapper/009:22:510
8550994219cyclictest0-21swapper/009:22:510
8550994219cyclictest0-21swapper/009:22:510
8550994215cyclictest30614-21ssh10:48:020
8550994215cyclictest30614-21ssh10:48:020
8550994215cyclictest30614-21ssh10:48:020
71420rcu_preempt0-21swapper/211:17:302
71420rcu_preempt0-21swapper/211:17:302
855399414cyclictest0-21swapper/310:34:283
855399414cyclictest0-21swapper/310:34:283
855399413cyclictest8413-21df11:07:413
855399413cyclictest8413-21df11:07:413
855399413cyclictest0-21swapper/311:02:383
855399413cyclictest0-21swapper/311:02:383
855399413cyclictest0-21swapper/310:38:473
855399413cyclictest0-21swapper/310:38:473
855399413cyclictest0-21swapper/310:38:473
855399413cyclictest0-21swapper/310:28:453
855399413cyclictest0-21swapper/310:28:453
855399413cyclictest0-21swapper/310:28:453
855399413cyclictest0-21swapper/309:33:313
855399413cyclictest0-21swapper/309:33:313
855399413cyclictest0-21swapper/309:33:313
855399413cyclictest0-21swapper/308:12:513
855399413cyclictest0-21swapper/308:12:513
855399413cyclictest0-21swapper/308:12:513
855399412cyclictest7249-21ntp_states09:02:523
855399412cyclictest7249-21ntp_states09:02:523
855399412cyclictest7249-21ntp_states09:02:523
855399412cyclictest32173-21/usr/sbin/munin08:37:513
855399412cyclictest32173-21/usr/sbin/munin08:37:513
855399412cyclictest22307-21munin-run08:02:273
855399412cyclictest22307-21munin-run08:02:273
855399412cyclictest22307-21munin-run08:02:273
855399412cyclictest1555-21chrt11:53:263
855399412cyclictest1555-21chrt11:53:263
855399412cyclictest11392-21/usr/sbin/munin12:12:583
855399412cyclictest11392-21/usr/sbin/munin12:12:583
855399412cyclictest11164-21df_inode11:12:463
855399412cyclictest11164-21df_inode11:12:463
855399412cyclictest10860-21ntp_states10:12:553
855399412cyclictest10860-21ntp_states10:12:553
855399411cyclictest27387-21sendmail-msp11:47:573
855399411cyclictest27387-21sendmail-msp11:47:573
855399411cyclictest16899-21/usr/sbin/munin07:42:573
855399411cyclictest16899-21/usr/sbin/munin07:42:573
855399411cyclictest16760-21awk10:22:563
855399411cyclictest16760-21awk10:22:563
855399411cyclictest16760-21awk10:22:563
855399411cyclictest12216-21users07:22:563
855399411cyclictest12216-21users07:22:563
855399411cyclictest12216-21users07:22:563
855399411cyclictest10049-21aten_r4power_vo07:17:403
855399411cyclictest10049-21aten_r4power_vo07:17:403
855399411cyclictest10049-21aten_r4power_vo07:17:403
8553994119cyclictest19145-21users07:47:553
8553994119cyclictest19145-21users07:47:553
8553994117cyclictest15209-21sendmail-msp09:28:063
8553994117cyclictest15209-21sendmail-msp09:28:063
8553994117cyclictest15209-21sendmail-msp09:28:063
8553994116cyclictest28265-21diskstats08:22:423
8553994116cyclictest28265-21diskstats08:22:423
855299414cyclictest0-21swapper/210:51:122
855299414cyclictest0-21swapper/210:51:122
855299414cyclictest0-21swapper/210:51:122
855299413cyclictest11896-21memory12:12:542
855299413cyclictest11896-21memory12:12:542
855299413cyclictest0-21swapper/212:27:562
855299413cyclictest0-21swapper/212:27:562
855299413cyclictest0-21swapper/212:27:562
855299413cyclictest0-21swapper/211:12:272
855299413cyclictest0-21swapper/211:12:272
855299413cyclictest0-21swapper/209:32:452
855299413cyclictest0-21swapper/209:32:452
855299413cyclictest0-21swapper/209:32:452
855299413cyclictest0-21swapper/209:12:562
855299413cyclictest0-21swapper/209:12:562
855299413cyclictest0-21swapper/207:52:262
855299413cyclictest0-21swapper/207:52:262
855299412cyclictest915-21ssh10:53:192
855299412cyclictest915-21ssh10:53:192
855299412cyclictest6908-21df09:02:412
855299412cyclictest6908-21df09:02:412
855299412cyclictest6908-21df09:02:412
855299412cyclictest28944-1kworker/2:5H08:37:552
855299412cyclictest28944-1kworker/2:5H08:37:552
855299412cyclictest28023-21apt-get08:22:372
855299412cyclictest28023-21apt-get08:22:372
855299412cyclictest14632-21ntp_states07:32:492
855299412cyclictest14632-21ntp_states07:32:492
8552994117cyclictest0-21swapper/210:17:502
8552994117cyclictest0-21swapper/210:17:502
8552994117cyclictest0-21swapper/210:17:502
8552994116cyclictest0-21swapper/209:30:102
8552994116cyclictest0-21swapper/209:30:102
8552994116cyclictest0-21swapper/209:30:102
8552994116cyclictest0-21swapper/207:37:462
8552994116cyclictest0-21swapper/207:37:462
8552994116cyclictest0-21swapper/207:37:462
8550994122cyclictest19556-21irqstats11:27:480
8550994122cyclictest19556-21irqstats11:27:480
8550994122cyclictest19556-21irqstats11:27:480
8550994121cyclictest20292-21ssh10:30:030
8550994121cyclictest20292-21ssh10:30:030
8550994121cyclictest20292-21ssh10:30:030
8550994121cyclictest0-21swapper/008:29:010
8550994121cyclictest0-21swapper/008:29:010
8550994121cyclictest0-21swapper/008:29:010
8550994120cyclictest1958-21snmpd12:34:310
8550994120cyclictest1958-21snmpd12:34:310
8550994119cyclictest29596-21ntpq09:47:530
8550994119cyclictest29596-21ntpq09:47:530
8550994119cyclictest0-21swapper/012:12:430
8550994119cyclictest0-21swapper/012:12:430
8550994119cyclictest0-21swapper/010:45:390
8550994119cyclictest0-21swapper/010:45:390
8550994119cyclictest0-21swapper/010:45:390
8550994119cyclictest0-21swapper/009:39:270
8550994119cyclictest0-21swapper/009:39:270
8550994119cyclictest0-21swapper/009:39:270
8550994119cyclictest0-21swapper/009:30:470
8550994119cyclictest0-21swapper/009:30:470
8550994119cyclictest0-21swapper/009:30:470
8550994119cyclictest0-21swapper/009:15:230
8550994119cyclictest0-21swapper/009:15:230
8550994118cyclictest22960-21ntp_states08:02:520
8550994118cyclictest22960-21ntp_states08:02:520
8550994118cyclictest22960-21ntp_states08:02:520
71410rcu_preempt0-21swapper/212:17:372
71410rcu_preempt0-21swapper/212:17:372
71410rcu_preempt0-21swapper/212:17:372
855399404cyclictest0-21swapper/309:38:473
855399404cyclictest0-21swapper/309:38:473
855399404cyclictest0-21swapper/309:38:473
855399404cyclictest0-21swapper/308:32:503
855399404cyclictest0-21swapper/308:32:503
855399403cyclictest0-21swapper/309:57:313
855399403cyclictest0-21swapper/309:57:313
855399403cyclictest0-21swapper/307:37:483
855399403cyclictest0-21swapper/307:37:483
855399403cyclictest0-21swapper/307:37:483
855399402cyclictest29720-21irqstats08:27:473
855399402cyclictest29720-21irqstats08:27:473
855399402cyclictest29720-21irqstats08:27:473
855399401cyclictest1688-21ntp_states08:42:523
855399401cyclictest1688-21ntp_states08:42:523
8553994018cyclictest10921-21ssh12:11:283
8553994018cyclictest10921-21ssh12:11:283
8553994018cyclictest10921-21ssh12:11:283
855299404cyclictest0-21swapper/208:17:552
855299404cyclictest0-21swapper/208:17:552
855299403cyclictest0-21swapper/212:33:332
855299403cyclictest0-21swapper/212:33:332
855299403cyclictest0-21swapper/211:37:272
855299403cyclictest0-21swapper/211:37:272
855299403cyclictest0-21swapper/210:04:582
855299403cyclictest0-21swapper/210:04:582
855299403cyclictest0-21swapper/210:02:222
855299403cyclictest0-21swapper/210:02:222
855299403cyclictest0-21swapper/210:02:222
855299403cyclictest0-21swapper/209:47:382
855299403cyclictest0-21swapper/209:47:382
855299403cyclictest0-21swapper/208:27:562
855299403cyclictest0-21swapper/208:27:562
855299403cyclictest0-21swapper/208:27:562
855299402cyclictest3766-21meminfo11:57:522
855299402cyclictest3766-21meminfo11:57:522
855299402cyclictest22277-21ssh10:33:052
855299402cyclictest22277-21ssh10:33:052
8550994024cyclictest1959-21runrttasks07:52:460
8550994024cyclictest1959-21runrttasks07:52:460
8550994024cyclictest1959-21runrttasks07:52:460
8550994024cyclictest16384-21sendmail-msp11:22:270
8550994024cyclictest16384-21sendmail-msp11:22:270
8550994024cyclictest16384-21sendmail-msp11:22:270
8550994023cyclictest1959-21runrttasks12:19:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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