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2026-05-16 - 20:33
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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 Sat May 16, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173692870,1sleep10-21swapper/112:34:161
837327033,32sleep00-21swapper/007:08:370
810526956,9sleep10-21swapper/107:05:471
8585993510,18cyclictest0-21swapper/007:19:100
8586993010,19cyclictest0-21swapper/109:12:171
8585992910,3cyclictest0-21swapper/009:17:510
858599290,1cyclictest1968-21apache_volume10:49:070
8585992810,0cyclictest0-21swapper/010:21:030
858699276,18cyclictest17541-21kworker/u4:212:00:331
8585992726,1cyclictest0-21swapper/009:20:490
8585992710,9cyclictest0-21swapper/010:01:540
858699262,23cyclictest0-21swapper/109:45:221
8586992510,11cyclictest0-21swapper/111:29:151
8586992510,10cyclictest0-21swapper/111:34:091
8586992510,0cyclictest0-21swapper/111:10:011
8586992422,1cyclictest14735-21latency_hist08:48:551
8586992415,3cyclictest1199-21runrttasks08:07:501
858699240,3cyclictest0-21swapper/111:46:251
8585992420,3cyclictest81ktimersoftd/009:24:540
8585992410,4cyclictest0-21swapper/010:34:170
8586992322,1cyclictest18437-21apache210:50:191
8586992316,4cyclictest0-21swapper/109:33:541
8586992310,1cyclictest0-21swapper/111:07:241
858699230,20cyclictest0-21swapper/111:24:561
858599230,15cyclictest10648-21perf11:43:560
858699222,18cyclictest13375-21ssh12:29:141
858699221,1cyclictest8612-21rm10:57:431
8586992210,4cyclictest0-21swapper/112:04:071
858699220,17cyclictest0-21swapper/111:54:141
8585992222,0cyclictest0-21swapper/007:30:390
858599222,17cyclictest0-21swapper/011:04:350
8585992218,4cyclictest0-21swapper/010:39:560
858599221,11cyclictest3862-21munin-run10:08:560
8585992210,8cyclictest0-21swapper/010:09:160
8585992210,6cyclictest0-21swapper/010:54:570
8585992210,4cyclictest0-21swapper/007:44:140
8585992210,0cyclictest0-21swapper/009:58:400
858599220,21cyclictest0-21swapper/008:44:090
8586992113,5cyclictest31186-21ssh09:19:111
8586992112,7cyclictest100250irq/107-eth1-rx11:49:551
8586992112,7cyclictest100250irq/107-eth1-rx11:49:551
8586992110,9cyclictest0-21swapper/112:27:231
8586992110,7cyclictest100150irq/106-eth1-rx10:46:101
8586992110,5cyclictest0-21swapper/110:59:161
8586992110,5cyclictest0-21swapper/107:59:131
858699210,8cyclictest0-21swapper/108:24:081
858699210,21cyclictest0-21swapper/110:17:001
858699210,20cyclictest0-21swapper/110:02:441
858599215,11cyclictest0-21swapper/009:04:150
8585992121,0cyclictest14470-21ssh12:30:540
8585992121,0cyclictest0-21swapper/007:38:530
8585992114,5cyclictest947-21sendmail-mta12:24:290
8585992113,4cyclictest23513-21ntp_states09:09:130
3071222110,0sleep00-21swapper/011:26:410
858699205,7cyclictest18718-21/usr/sbin/munin07:34:101
858699204,8cyclictest0-21swapper/110:36:241
858699202,9cyclictest0-21swapper/107:14:071
8586992016,3cyclictest802-21apache208:09:111
858699201,12cyclictest21391-21/usr/sbin/munin09:49:091
8586992010,6cyclictest0-21swapper/111:19:451
8586992010,6cyclictest0-21swapper/107:09:071
8586992010,0cyclictest0-21swapper/109:37:351
858699200,11cyclictest20931-21/usr/sbin/munin09:04:101
858599209,6cyclictest636-21nscd12:37:560
858599205,11cyclictest0-21swapper/010:29:100
858599204,9cyclictest0-21swapper/008:49:080
858599204,3cyclictest13219-21ssh11:46:310
858599202,6cyclictest0-21swapper/007:59:070
8585992013,3cyclictest100150irq/106-eth1-rx11:35:500
8585992010,5cyclictest0-21swapper/011:59:060
8585992010,5cyclictest0-21swapper/011:19:080
914621910,0sleep19154-21ssh11:40:361
858699199,5cyclictest16893-21diskmemload10:24:271
858699195,10cyclictest0-21swapper/110:04:181
858699194,11cyclictest0-21swapper/107:39:121
858699192,9cyclictest26385-21diskstats07:54:101
8586991919,0cyclictest0-21swapper/107:49:541
8586991912,4cyclictest8583-21cyclictest11:16:271
8586991910,6cyclictest0-21swapper/112:13:411
8586991910,6cyclictest0-21swapper/107:44:171
8586991910,4cyclictest0-21swapper/112:19:121
858599197,6cyclictest17621-21ssh10:26:060
858599193,11cyclictest0-21swapper/007:09:120
8585991918,1cyclictest18409-21apache210:15:200
8585991917,1cyclictest802-21apache211:13:210
8585991912,6cyclictest100250irq/107-eth1-rx09:33:180
8585991910,6cyclictest0-21swapper/009:49:090
8585991910,5cyclictest0-21swapper/012:04:130
8585991910,3cyclictest0-21swapper/008:34:080
8585991910,2cyclictest0-21swapper/007:54:080
8585991910,1cyclictest0-21swapper/011:32:400
858599190,18cyclictest0-21swapper/008:43:130
3171821910,0sleep00-21swapper/008:08:380
1804721910,1sleep10-21swapper/107:33:521
858699189,4cyclictest19473-21df10:29:091
858699186,7cyclictest13547-21taskset09:39:071
858699183,8cyclictest0-21swapper/108:54:091
858699181,11cyclictest0-21swapper/110:19:241
8586991810,3cyclictest0-21swapper/107:24:071
8586991810,1cyclictest0-21swapper/108:59:071
858699180,9cyclictest0-21swapper/109:54:051
858599185,10cyclictest0-21swapper/012:09:160
858599184,9cyclictest0-21swapper/009:39:130
858599183,7cyclictest22466-21diskmemload12:20:370
858599182,11cyclictest0-21swapper/009:44:120
8585991815,2cyclictest8583-21cyclictest07:42:280
8585991815,2cyclictest636-21nscd11:14:480
8585991811,5cyclictest11339-21ssh11:00:440
1630321810,0sleep10-21swapper/108:50:331
1209921810,0sleep00-21swapper/007:17:110
858699172,4cyclictest30320-21kworker/u4:210:08:561
8586991715,0cyclictest28652-21ssh10:40:051
8586991712,4cyclictest18409-21apache209:17:021
8586991710,4cyclictest0-21swapper/107:19:151
8586991710,3cyclictest0-21swapper/112:14:081
858699170,9cyclictest0-21swapper/108:29:091
858599173,9cyclictest0-21swapper/008:54:120
858599173,8cyclictest0-21swapper/007:24:080
8585991711,3cyclictest0-21swapper/009:01:570
8585991711,2cyclictest0-21swapper/008:19:290
858599171,12cyclictest0-21swapper/008:13:560
8585991710,6cyclictest0-21swapper/010:44:030
8585991710,5cyclictest0-21swapper/008:29:150
8585991710,2cyclictest0-21swapper/009:34:350
858699162,9cyclictest0-21swapper/108:19:081
8586991610,5cyclictest0-21swapper/109:26:161
8586991610,2cyclictest0-21swapper/108:39:071
858599165,10cyclictest0-21swapper/008:24:130
858599163,5cyclictest0-21swapper/008:14:080
8585991610,5cyclictest0-21swapper/012:15:200
8585991610,1cyclictest0-21swapper/011:51:150
8585991610,1cyclictest0-21swapper/011:51:150
858699151,8cyclictest0-21swapper/108:14:091
858599152,6cyclictest0-21swapper/007:49:080
8585991510,3cyclictest0-21swapper/011:54:060
858699146,3cyclictest745-21watchprog-snmpd08:36:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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