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2026-07-20 - 10:10
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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 rackbslot7.osadl.org (updated Mon Jul 20, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24086212811,80sleep124120-21munin-run18:56:401
24086212811,80sleep124120-21munin-run18:56:401
24225991213,22cyclictest1160-21interrupts22:47:050
24225991193,43cyclictest32687-21ssh21:51:570
24225991152,34cyclictest11998-21taskset22:11:350
23468211518,61sleep223531-21find18:52:252
23468211518,61sleep223531-21find18:52:252
24225991122,27cyclictest26097-21sh21:40:570
24225991112,23cyclictest26784-21ssh22:36:170
242259911119,67cyclictest21372-21rm00:16:250
242259911119,67cyclictest21372-21rm00:16:250
24225991103,28cyclictest30802-21ssh21:47:230
242259911017,61cyclictest0-21swapper/022:26:550
24225991092,29cyclictest16794-21taskset20:11:220
24225991092,24cyclictest5880-21taskset23:49:150
24225991092,24cyclictest5880-21taskset23:49:150
24225991092,22cyclictest16272-21ssh21:23:570
24225991092,22cyclictest16272-21ssh21:23:570
242259910843,59cyclictest0-21swapper/023:31:410
24225991082,28cyclictest8088-21diskmemload21:11:330
24225991082,28cyclictest8088-21diskmemload21:11:330
24225991073,27cyclictest13736-21sh21:20:090
24225991072,23cyclictest8203-21runrttasks19:43:080
24225991072,23cyclictest5003-21sh21:06:200
24225991063,21cyclictest5390-21ssh22:53:490
24225991062,25cyclictest426-21sh23:40:460
242259910548,50cyclictest170-21jbd2/mmcblk2p2-819:32:120
242259910513,22cyclictest14390-21sh22:14:560
242259910445,52cyclictest29906-21fschecks_count19:12:020
24225991042,27cyclictest23164-21ssh23:23:330
24225991042,26cyclictest8966-21taskset22:06:300
24225991033,28cyclictest25383-21/usr/sbin/munin20:36:500
24225991032,24cyclictest3842-21ssh21:57:530
24225991032,23cyclictest31550-21ssh22:42:560
24225991032,23cyclictest31550-21ssh22:42:560
24225991023,33cyclictest5678-21cstates19:37:210
24225991023,30cyclictest352-21runrttasks00:19:400
24225991023,24cyclictest31454-21df19:16:590
24225991022,22cyclictest29029-21ssh21:45:510
24225991022,22cyclictest29029-21ssh21:45:510
24225991022,22cyclictest12099-21ssh23:59:590
24225991014,22cyclictest16646-21ssh22:17:540
24225991012,24cyclictest17251-21taskset00:08:000
24225991012,23cyclictest11788-21ssh23:05:050
24225991012,22cyclictest8412-21ssh22:58:590
24225991012,22cyclictest8412-21ssh22:58:590
24225991012,22cyclictest26965-21ssh00:25:310
24225991012,22cyclictest26965-21ssh00:25:310
24231991003,81cyclictest5042-21apt-get19:36:542
24225991003,24cyclictest20972-21ssh23:20:460
24225991002,23cyclictest28900-21ssh22:38:520
24225999935,56cyclictest0-21swapper/019:52:300
2422599993,29cyclictest13328-21taskset19:58:300
2422599993,25cyclictest27829-21sort23:32:020
2422599992,22cyclictest2544-21ssh23:43:200
2422999983,43cyclictest31615-21diskmemload23:41:531
24229999812,36cyclictest25654-21grep23:27:181
24225999846,44cyclictest0-21swapper/020:56:410
2422599982,22cyclictest20391-21taskset22:25:060
2422599982,21cyclictest14518-21sh23:09:190
24225999741,49cyclictest9448-21timerwakeupswit21:12:160
24225999739,52cyclictest2847-21threads19:27:160
2422599973,24cyclictest22692-21sh21:34:440
2422599972,22cyclictest8839-21ssh23:54:120
2422599972,22cyclictest15042-21taskset20:04:450
2422599962,25cyclictest27739-21taskset19:06:010
2422599962,22cyclictest16436-21awk23:12:150
2422599962,22cyclictest16436-21awk23:12:150
24229999540,50cyclictest24216-21cyclictest21:37:031
2422999952,37cyclictest24273-21apt-get22:31:531
24225999565,22cyclictest9741-21unixbench_singl19:47:160
2422599952,25cyclictest706-21fschecks_time19:22:030
24229999439,47cyclictest0-21swapper/121:56:431
24229999434,12cyclictest0-21swapper/122:46:431
24229999434,12cyclictest0-21swapper/122:46:431
2422999943,37cyclictest32212-21grep19:17:181
2422999943,30cyclictest25179-21apt-config20:36:431
2422999943,30cyclictest25179-21apt-config20:36:431
24225999470,15cyclictest29637-21awk20:47:210
2422599944,31cyclictest26994-21/usr/sbin/munin20:42:180
2422599943,30cyclictest19326-21sendmail_mailqu20:17:130
2422599943,30cyclictest19326-21sendmail_mailqu20:17:130
2422599943,27cyclictest18173-21uniq21:27:290
2422599942,20cyclictest13285-21ssh00:01:570
2422599942,20cyclictest13285-21ssh00:01:570
24229999334,9cyclictest0-21swapper/119:57:161
2422599934,23cyclictest23323-21unin-run20:31:400
24231999227,31cyclictest39-21ksoftirqd/223:01:362
24231999227,31cyclictest39-21ksoftirqd/223:01:362
24229999239,45cyclictest0-21swapper/100:01:301
2422999923,35cyclictest14567-21switchtime20:02:141
2422999922,37cyclictest18831-21apt-get00:11:491
2422999922,37cyclictest18831-21apt-get00:11:491
2422599923,30cyclictest21662-21systemctl20:26:390
2422599923,23cyclictest25726-21runrttasks19:01:260
2422599923,23cyclictest25726-21runrttasks19:01:260
2422599922,32cyclictest31941-21ssh20:56:530
2422999914,33cyclictest18659-21ssh00:11:421
24229999140,46cyclictest24216-21cyclictest22:11:431
2422999913,43cyclictest9951-21fschecks_time23:02:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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