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2026-08-17 - 16:49
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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 all highest latencies:
System rackcslot2.osadl.org (updated Mon Aug 17, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1128828356,22sleep00-21swapper/007:06:070
1114727751,21sleep10-21swapper/107:04:391
62352710,0sleep00-21swapper/009:24:530
69512690,0sleep10-21swapper/109:26:281
11663993710,0cyclictest0-21swapper/010:46:060
11663992823,4cyclictest8521-21awk12:33:070
11664992711,5cyclictest0-21swapper/109:20:121
11664992626,0cyclictest0-21swapper/108:49:211
11664992621,3cyclictest21508-21apache209:51:161
11664992610,13cyclictest0-21swapper/111:16:591
11664992510,1cyclictest0-21swapper/111:43:051
1166399253,3cyclictest0-21swapper/011:51:560
11663992516,5cyclictest21482-21apache209:47:560
1166499245,13cyclictest0-21swapper/111:28:301
11664992422,1cyclictest21482-21apache208:24:201
11664992411,2cyclictest0-21swapper/107:58:361
11663992424,0cyclictest0-21swapper/009:52:060
11663992424,0cyclictest0-21swapper/009:01:000
11663992422,1cyclictest12185-21ssh11:04:570
11663992410,9cyclictest0-21swapper/012:04:170
1166499231,6cyclictest26090-21kworker/u4:112:14:361
11664992315,5cyclictest636-21nscd12:34:241
11664992311,2cyclictest0-21swapper/111:52:591
11664992310,8cyclictest0-21swapper/110:25:121
11664992310,7cyclictest0-21swapper/112:22:191
11664992310,5cyclictest0-21swapper/108:58:201
11663992323,0cyclictest0-21swapper/011:48:050
11663992318,4cyclictest21508-21apache211:21:000
11663992310,4cyclictest0-21swapper/011:38:520
11663992310,4cyclictest0-21swapper/009:38:230
11663992310,4cyclictest0-21swapper/009:38:230
1166399230,2cyclictest0-21swapper/011:55:430
1591022210,0sleep10-21swapper/111:57:131
1166499225,13cyclictest0-21swapper/108:28:191
11664992222,0cyclictest0-21swapper/111:26:001
11664992211,3cyclictest5951-21ssh11:43:141
11664992210,9cyclictest0-21swapper/110:59:471
11664992210,6cyclictest0-21swapper/110:07:331
11664992210,4cyclictest0-21swapper/111:03:461
1166499220,13cyclictest0-21swapper/112:23:291
11663992220,1cyclictest3700-21if_eth210:53:220
11663992213,5cyclictest0-21swapper/009:10:360
11663992212,4cyclictest0-21swapper/010:08:220
11663992210,5cyclictest0-21swapper/009:08:080
11663992210,3cyclictest0-21swapper/010:58:210
962722110,0sleep00-21swapper/009:29:230
1166499214,9cyclictest0-21swapper/109:13:191
1166499211,19cyclictest0-21swapper/109:32:481
11664992111,4cyclictest25542-21diskmemload11:18:461
11664992110,8cyclictest0-21swapper/110:40:551
11664992110,8cyclictest0-21swapper/107:53:191
1166399213,11cyclictest0-21swapper/007:26:470
1166399212,18cyclictest30560-21/usr/sbin/munin12:18:220
11663992116,3cyclictest21508-21apache210:43:050
11663992112,2cyclictest9258-21sh10:14:420
1166399211,14cyclictest0-21swapper/012:14:390
11663992110,8cyclictest0-21swapper/010:32:530
11663992110,5cyclictest0-21swapper/008:26:030
11663992110,4cyclictest0-21swapper/007:18:200
310792200,0sleep00-21swapper/007:58:080
1166499206,7cyclictest27119-21users09:08:301
1166499204,11cyclictest30172-21/usr/sbin/munin09:58:271
11664992020,0cyclictest802-21apache210:09:151
11664992018,1cyclictest0-21swapper/110:48:211
11664992010,7cyclictest0-21swapper/110:32:061
11664992010,4cyclictest0-21swapper/107:14:031
11664992010,3cyclictest0-21swapper/108:03:201
11664992010,0cyclictest13962-21cron08:38:071
11664992010,0cyclictest0-21swapper/110:18:431
1166399204,8cyclictest0-21swapper/008:38:240
1166399204,7cyclictest25542-21diskmemload10:18:180
11663992017,2cyclictest11661-21cyclictest12:08:580
11663992013,4cyclictest19023-21sh12:01:180
11663992012,3cyclictest0-21swapper/008:13:270
11663992011,1cyclictest24790-21kworker/u4:210:06:570
11663992010,9cyclictest0-21swapper/008:08:200
11663992010,6cyclictest100250irq/107-eth1-rx11:23:110
11663992010,6cyclictest0-21swapper/010:23:530
11663992010,6cyclictest0-21swapper/007:38:220
11663992010,5cyclictest0-21swapper/009:13:120
11663992010,5cyclictest0-21swapper/008:43:480
11663992010,4cyclictest0-21swapper/007:43:200
11663992010,0cyclictest0-21swapper/007:11:520
1448421910,0sleep00-21swapper/009:37:240
1166499196,8cyclictest0-21swapper/109:53:561
1166499196,8cyclictest0-21swapper/108:13:211
1166499194,8cyclictest0-21swapper/112:08:251
1166499193,10cyclictest25542-21diskmemload09:43:281
11664991919,0cyclictest21508-21apache210:56:451
11664991918,0cyclictest0-21swapper/107:09:191
11664991911,2cyclictest0-21swapper/111:08:121
11664991910,7cyclictest0-21swapper/109:39:121
11664991910,7cyclictest0-21swapper/109:39:121
11664991910,5cyclictest0-21swapper/112:28:181
11664991910,4cyclictest0-21swapper/108:08:271
11664991910,3cyclictest0-21swapper/109:03:181
11664991910,1cyclictest0-21swapper/112:06:491
11664991910,1cyclictest0-21swapper/110:36:221
1166399194,12cyclictest0-21swapper/012:23:200
11663991918,1cyclictest21508-21apache212:35:160
11663991917,2cyclictest21482-21apache211:14:420
11663991912,5cyclictest947-21sendmail-mta11:35:250
11663991912,3cyclictest10050irq/110-ahci[0011:10:190
11663991910,3cyclictest0-21swapper/009:59:330
11663991910,2cyclictest0-21swapper/008:18:190
1166399190,16cyclictest0-21swapper/009:19:240
1166499189,5cyclictest21482-21apache211:33:121
1166499186,7cyclictest0-21swapper/111:58:201
1166499186,5cyclictest0-21swapper/110:43:311
1166499184,9cyclictest27336-21/usr/sbin/munin07:48:201
11664991818,0cyclictest0-21swapper/109:35:431
11664991815,2cyclictest21410-21apache207:33:081
11664991810,5cyclictest0-21swapper/107:43:281
11664991810,4cyclictest0-21swapper/108:53:181
1166499180,9cyclictest0-21swapper/107:18:291
1166399183,8cyclictest0-21swapper/007:58:260
11663991810,5cyclictest0-21swapper/008:03:200
11663991810,2cyclictest0-21swapper/007:28:200
1166499172,4cyclictest0-21swapper/108:43:271
11664991714,2cyclictest21508-21apache208:40:011
11664991710,5cyclictest0-21swapper/108:18:191
11664991710,5cyclictest0-21swapper/107:25:091
11664991710,3cyclictest0-21swapper/110:13:181
1166399173,5cyclictest0-21swapper/008:33:270
11663991715,1cyclictest0-21swapper/010:50:140
11663991710,4cyclictest0-21swapper/011:28:180
11663991710,4cyclictest0-21swapper/008:56:440
11663991710,2cyclictest0-21swapper/007:33:080
11664991610,2cyclictest0-21swapper/107:28:191
1166399163,7cyclictest26287-21ssh09:53:240
11663991614,1cyclictest7-21ksoftirqd/007:53:080
11663991610,5cyclictest0-21swapper/010:33:250
11663991610,2cyclictest0-21swapper/008:28:080
11664991510,5cyclictest0-21swapper/107:41:031
1166399155,3cyclictest13602-21apache_accesses07:13:190
11663991410,1cyclictest19194-21pidof08:48:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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