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2026-07-21 - 17:55
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Tue Jul 21, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2054226957,8sleep00-21swapper/007:05:390
1905026957,8sleep10-21swapper/107:03:271
10452650,1sleep10-21swapper/112:28:351
20985993211,4cyclictest0-21swapper/010:47:110
20985993010,3cyclictest0-21swapper/009:57:260
2221122910,3sleep00-21swapper/008:33:400
20986992716,8cyclictest30803-21apache211:13:201
20985992620,5cyclictest30803-21apache209:25:140
20985992611,8cyclictest0-21swapper/009:46:230
20985992611,5cyclictest0-21swapper/011:28:320
20985992610,6cyclictest0-21swapper/012:03:380
20986992525,0cyclictest0-21swapper/111:32:411
20986992521,3cyclictest30829-21apache211:47:181
2098599259,15cyclictest0-21swapper/009:28:260
20985992510,4cyclictest0-21swapper/007:38:340
2098599250,7cyclictest0-21swapper/012:33:380
2098599250,2cyclictest0-21swapper/012:16:000
2098699247,16cyclictest0-21swapper/108:07:181
20986992424,0cyclictest0-21swapper/110:38:361
20985992417,4cyclictest8217-21grep09:13:440
2098599240,2cyclictest0-21swapper/009:10:590
20986992316,5cyclictest30803-21apache210:22:031
20986992315,6cyclictest0-21swapper/109:53:311
2098699231,3cyclictest25769-21apache_processe11:38:351
20986992313,7cyclictest231ktimersoftd/112:06:341
2098699231,2cyclictest0-21swapper/111:58:081
20986992310,3cyclictest0-21swapper/110:26:051
2098699230,5cyclictest0-21swapper/110:43:271
2098699230,22cyclictest6040-21diskstats11:13:361
2098599237,7cyclictest588-21in:imuxsock10:08:400
20985992320,1cyclictest0-21swapper/009:20:300
20985992318,4cyclictest30803-21apache211:58:240
20985992317,5cyclictest30803-21apache212:31:010
20985992312,4cyclictest636-21nscd12:10:070
20985992310,6cyclictest0-21swapper/010:18:390
2098599230,4cyclictest0-21swapper/011:02:100
2098699227,15cyclictest0-21swapper/112:14:541
2098699226,9cyclictest0-21swapper/109:03:381
2098699223,6cyclictest1199-21runrttasks07:23:541
2098699223,18cyclictest25149-21ssh12:18:331
20986992222,0cyclictest20983-21cyclictest11:01:561
20986992221,0cyclictest231ktimersoftd/111:38:061
20986992216,4cyclictest30803-21apache210:32:471
20986992214,4cyclictest20983-21cyclictest10:55:401
2098699221,20cyclictest0-21swapper/109:58:291
20986992211,6cyclictest100150irq/106-eth1-rx10:09:301
20986992210,4cyclictest0-21swapper/109:18:361
2098599225,4cyclictest1199-21runrttasks11:50:590
2098599224,12cyclictest13974-21cstates08:13:340
2098599222,9cyclictest0-21swapper/010:30:080
20985992221,1cyclictest0-21swapper/011:40:050
20985992217,2cyclictest8318-21sh10:35:040
20985992213,7cyclictest30803-21apache212:19:280
2098599221,20cyclictest0-21swapper/011:25:250
20985992210,11cyclictest0-21swapper/009:35:070
2098599220,1cyclictest0-21swapper/010:24:510
3164522110,0sleep031651-21ssh11:03:520
20986992115,1cyclictest231ktimersoftd/108:23:411
20986992113,6cyclictest30829-21apache207:43:431
2098699211,19cyclictest0-21swapper/109:11:141
20986992110,9cyclictest0-21swapper/108:17:501
20986992110,8cyclictest0-21swapper/111:19:201
20986992110,4cyclictest0-21swapper/110:03:401
2098599214,6cyclictest2462-21diskmemload10:40:060
2098599211,12cyclictest0-21swapper/007:13:350
20985992110,7cyclictest0-21swapper/007:28:340
20985992110,2cyclictest0-21swapper/010:02:150
2098599210,20cyclictest0-21swapper/008:31:550
2098599210,1cyclictest0-21swapper/011:48:160
2680522010,0sleep00-21swapper/008:45:120
2358722010,0sleep10-21swapper/110:13:411
2098699209,6cyclictest10455-21unixbench_multi11:58:441
2098699209,5cyclictest100250irq/107-eth1-rx07:13:341
2098699205,6cyclictest0-21swapper/107:08:331
2098699203,3cyclictest0-21swapper/108:28:361
20986992015,4cyclictest30803-21apache208:09:511
20986992011,3cyclictest0-21swapper/109:48:431
20986992010,3cyclictest0-21swapper/107:53:391
2098699200,11cyclictest0-21swapper/107:18:391
2098599206,8cyclictest0-21swapper/008:58:390
2098599203,9cyclictest0-21swapper/010:13:330
2098599203,6cyclictest0-21swapper/007:57:150
20985992018,1cyclictest5813-21seq11:13:350
20985992016,3cyclictest802-21apache211:53:480
20985992014,2cyclictest30803-21apache211:10:060
20985992011,5cyclictest20207-1kworker/u5:110:54:260
20985992010,3cyclictest0-21swapper/008:56:060
20985992010,3cyclictest0-21swapper/007:18:340
20985992010,1cyclictest0-21swapper/008:12:590
2098599200,0cyclictest0-21swapper/009:51:220
3203321910,0sleep10-21swapper/111:04:431
2098699197,6cyclictest29288-21cpuspeed_turbos08:53:351
2098699192,8cyclictest0-21swapper/112:26:471
20986991916,1cyclictest0-21swapper/109:17:251
20986991914,5cyclictest0-21swapper/108:22:201
20986991911,3cyclictest0-21swapper/112:11:161
20986991911,3cyclictest0-21swapper/111:50:071
20986991910,6cyclictest0-21swapper/109:36:091
20986991910,6cyclictest0-21swapper/109:28:441
20986991910,5cyclictest0-21swapper/110:33:371
20986991910,5cyclictest0-21swapper/108:42:251
20986991910,4cyclictest0-21swapper/108:03:211
20986991910,3cyclictest0-21swapper/112:33:431
20986991910,3cyclictest0-21swapper/109:47:471
20986991910,1cyclictest0-21swapper/110:52:571
2098599194,13cyclictest0-21swapper/012:23:330
20985991919,0cyclictest0-21swapper/011:35:300
20985991917,1cyclictest24479-21snmpd07:49:060
20985991910,5cyclictest0-21swapper/010:48:320
20985991910,4cyclictest0-21swapper/008:38:330
20985991910,4cyclictest0-21swapper/008:18:450
20985991910,4cyclictest0-21swapper/007:23:390
20986991811,3cyclictest0-21swapper/107:33:331
20986991810,6cyclictest0-21swapper/109:26:021
2098599184,7cyclictest1854-21/usr/sbin/munin09:03:410
2098599184,7cyclictest0-21swapper/008:48:370
20985991817,1cyclictest0-21swapper/011:18:290
20985991814,4cyclictest0-21swapper/009:40:220
2098599180,7cyclictest0-21swapper/008:08:210
3033821710,0sleep10-21swapper/109:42:181
2098699172,8cyclictest0-21swapper/108:43:391
20986991710,3cyclictest0-21swapper/108:58:421
20986991710,3cyclictest0-21swapper/107:40:491
20986991710,1cyclictest0-21swapper/108:33:371
2098699170,8cyclictest0-21swapper/111:23:441
2098599173,6cyclictest0-21swapper/010:05:220
2098599173,10cyclictest0-21swapper/007:58:340
2098599170,6cyclictest0-21swapper/007:43:270
20986991610,3cyclictest0-21swapper/107:48:311
20986991610,2cyclictest0-21swapper/107:28:341
20985991610,5cyclictest0-21swapper/007:35:570
20985991610,2cyclictest0-21swapper/007:08:330
2098699152,4cyclictest0-21swapper/108:48:391
2098599152,8cyclictest0-21swapper/008:23:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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