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2026-04-10 - 21:28
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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
Characteristics of the highest latencies:
System rackcslot2.osadl.org (updated Fri Apr 10, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324952730,1sleep00-21swapper/012:29:250
342526849,8sleep00-21swapper/007:07:260
272492680,0sleep10-21swapper/110:51:061
184826755,8sleep10-21swapper/107:04:191
166602640,1sleep10-21swapper/111:21:471
3778993410,1cyclictest0-21swapper/109:48:481
3777993010,19cyclictest0-21swapper/010:11:040
3777992820,3cyclictest81ktimersoftd/007:59:260
3777992725,2cyclictest0-21swapper/012:04:330
3777992713,5cyclictest636-21nscd09:55:420
377899265,19cyclictest0-21swapper/111:09:541
3778992625,0cyclictest0-21swapper/110:34:191
377899255,11cyclictest0-21swapper/108:49:271
3778992517,7cyclictest13668-21apache211:45:171
3777992521,4cyclictest13668-21apache211:07:020
3777992510,11cyclictest0-21swapper/009:24:530
377899240,3cyclictest0-21swapper/112:06:521
3777992410,7cyclictest0-21swapper/010:34:450
3777992410,6cyclictest0-21swapper/010:59:330
377799240,23cyclictest0-21swapper/010:01:500
1217222410,0sleep10-21swapper/108:54:251
3778992321,1cyclictest0-21swapper/108:24:041
3778992316,6cyclictest9860-21apache207:29:211
3778992314,6cyclictest13639-21apache210:21:311
3778992313,4cyclictest0-21swapper/111:07:471
3777992322,1cyclictest0-21swapper/008:47:080
3777992317,5cyclictest13668-21apache209:47:310
3777992316,4cyclictest29078-21apache_volume08:14:240
3777992310,8cyclictest0-21swapper/007:44:220
377899229,10cyclictest17705-21diskmemload10:10:591
377899224,12cyclictest0-21swapper/112:19:231
3778992220,1cyclictest0-21swapper/112:16:571
3778992219,2cyclictest231ktimersoftd/110:03:521
3778992211,8cyclictest100150irq/106-eth1-rx12:03:251
3778992211,3cyclictest0-21swapper/108:38:131
3778992210,5cyclictest0-21swapper/109:40:101
3777992210,4cyclictest0-21swapper/011:19:230
3777992210,3cyclictest0-21swapper/008:30:240
377899216,13cyclictest0-21swapper/108:39:231
377899215,13cyclictest0-21swapper/110:04:301
3778992119,1cyclictest13639-21apache211:35:461
3778992111,6cyclictest23966-21kworker/u4:011:50:371
3778992110,6cyclictest0-21swapper/111:14:321
3778992110,5cyclictest0-21swapper/109:54:331
3778992110,5cyclictest0-21swapper/109:14:551
3778992110,4cyclictest100350irq/108-eth1-tx10:28:191
3778992110,0cyclictest0-21swapper/111:58:141
377899210,14cyclictest0-21swapper/111:39:261
3777992116,4cyclictest32583-21/usr/sbin/munin09:29:240
3777992115,3cyclictest7-21ksoftirqd/009:34:260
3777992114,6cyclictest0-21swapper/008:22:160
3777992113,3cyclictest20246-21ntp_kernel_pll_07:49:290
3777992111,4cyclictest100350irq/108-eth1-tx11:54:260
3777992111,4cyclictest0-21swapper/008:04:310
377799211,13cyclictest0-21swapper/008:09:300
3777992110,6cyclictest0-21swapper/011:29:260
187322110,0sleep10-21swapper/109:30:191
377899203,10cyclictest0-21swapper/109:34:281
3778992017,2cyclictest13668-21apache211:03:291
377899201,15cyclictest0-21swapper/110:57:521
3778992011,4cyclictest100250irq/107-eth1-rx12:36:461
377899201,12cyclictest0-21swapper/112:29:311
3778992010,9cyclictest0-21swapper/108:24:251
3778992010,7cyclictest0-21swapper/109:52:031
3778992010,5cyclictest0-21swapper/107:19:221
3778992010,2cyclictest0-21swapper/107:34:251
3778992010,1cyclictest0-21swapper/109:28:261
377799206,8cyclictest0-21swapper/012:14:230
377799203,12cyclictest7455-21rm09:39:220
3777992018,2cyclictest13668-21apache212:38:420
3777992018,1cyclictest7-21ksoftirqd/009:11:470
3777992018,1cyclictest585-21gmain10:14:120
377799201,18cyclictest0-21swapper/012:26:290
3777992011,4cyclictest0-21swapper/010:26:200
3777992010,9cyclictest0-21swapper/007:12:200
3777992010,7cyclictest0-21swapper/007:24:310
3777992010,6cyclictest0-21swapper/012:09:290
3777992010,6cyclictest0-21swapper/011:34:210
3777992010,5cyclictest0-21swapper/011:15:280
3777992010,5cyclictest0-21swapper/010:23:300
3777992010,4cyclictest0-21swapper/009:24:010
2768222010,0sleep00-21swapper/012:22:250
377899193,9cyclictest0-21swapper/108:09:241
3778991917,1cyclictest19022-21ls12:09:311
3778991917,1cyclictest100350irq/108-eth1-tx10:29:411
3778991910,4cyclictest0-21swapper/108:59:231
3778991910,4cyclictest0-21swapper/108:00:031
3778991910,3cyclictest0-21swapper/107:24:241
3778991910,3cyclictest0-21swapper/107:09:151
377799195,8cyclictest21410-21/usr/sbin/munin07:54:230
3777991917,1cyclictest12540-21ssh12:00:590
3777991917,0cyclictest0-21swapper/007:33:340
3777991911,4cyclictest0-21swapper/011:51:120
3777991910,8cyclictest0-21swapper/010:40:010
3777991910,5cyclictest0-21swapper/011:44:430
3777991910,3cyclictest0-21swapper/009:49:240
377899183,10cyclictest0-21swapper/109:09:221
3778991816,1cyclictest13668-21apache210:47:501
3778991811,6cyclictest29170-21kworker/1:211:25:021
3778991810,5cyclictest0-21swapper/109:19:291
3778991810,4cyclictest0-21swapper/107:46:251
377799182,10cyclictest1062-21/usr/sbin/munin08:24:280
3777991817,1cyclictest7-21ksoftirqd/010:58:210
3777991812,5cyclictest13639-21apache209:14:590
3777991810,5cyclictest0-21swapper/007:14:240
3777991810,4cyclictest0-21swapper/011:09:250
3777991810,4cyclictest0-21swapper/010:49:310
3777991810,4cyclictest0-21swapper/010:04:310
3777991810,1cyclictest0-21swapper/010:45:480
2907021810,0sleep10-21swapper/108:14:231
377899172,6cyclictest17705-21diskmemload10:40:391
3778991716,1cyclictest744-21snmpd07:18:241
377899171,11cyclictest0-21swapper/112:24:291
3778991710,4cyclictest0-21swapper/108:44:281
3778991710,3cyclictest0-21swapper/109:04:241
3778991710,3cyclictest0-21swapper/107:49:261
3778991710,2cyclictest0-21swapper/111:29:141
3778991710,0cyclictest0-21swapper/110:15:101
377799177,8cyclictest0-21swapper/010:29:220
377799177,6cyclictest17705-21diskmemload11:39:220
377799177,1cyclictest7-21ksoftirqd/011:25:370
3777991716,0cyclictest7-21ksoftirqd/008:54:120
3777991713,4cyclictest16051-21cpuspeed_turbos09:04:230
3777991710,3cyclictest0-21swapper/007:34:120
3777991710,2cyclictest0-21swapper/007:19:230
1566121710,2sleep00-21swapper/007:39:210
377899165,6cyclictest17031-21pidof07:40:181
377899164,8cyclictest0-21swapper/107:56:551
3778991611,1cyclictest25243-21/usr/sbin/munin08:04:311
3777991614,1cyclictest13639-21apache209:00:260
3777991610,1cyclictest0-21swapper/008:39:310
3777991610,1cyclictest0-21swapper/008:34:230
377899152,7cyclictest2691-21fschecks_count08:29:241
377799151,8cyclictest0-21swapper/008:54:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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