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2025-11-24 - 02:14
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Sun Nov 23, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2683126855,8sleep10-21swapper/107:04:421
272482660,0sleep00-21swapper/010:12:000
301162650,1sleep030115-21seq08:36:590
2647526450,9sleep00-21swapper/007:02:080
27210993210,0cyclictest0-21swapper/107:18:221
2720999301,4cyclictest20907-21taskset10:46:060
2720999282,23cyclictest0-21swapper/010:35:270
27209992721,5cyclictest4725-21apache207:48:390
27210992622,3cyclictest2389-21ssh11:03:091
2721099261,24cyclictest16633-21rm09:16:261
27209992622,3cyclictest0-21swapper/009:33:330
2720999260,25cyclictest0-21swapper/011:41:570
27210992511,8cyclictest0-21swapper/107:39:241
27209992525,0cyclictest0-21swapper/011:03:220
27209992524,0cyclictest0-21swapper/011:47:440
27209992517,6cyclictest4725-21apache212:20:560
27209992511,10cyclictest4725-21apache212:09:580
2721099242,3cyclictest0-21swapper/109:23:231
27210992420,4cyclictest4706-21apache210:44:511
2720999241,6cyclictest0-21swapper/009:38:260
2720999240,18cyclictest168-21systemd-journal07:37:330
27210992323,0cyclictest0-21swapper/109:36:211
27210992322,1cyclictest0-21swapper/112:19:141
27210992317,5cyclictest98050irq/109-eth1-tx11:51:591
27210992310,4cyclictest0-21swapper/107:07:211
27210992310,3cyclictest0-21swapper/110:12:541
2721099230,11cyclictest0-21swapper/110:27:061
27209992317,5cyclictest4725-21apache210:23:270
27209992315,6cyclictest4706-21apache212:22:340
27209992314,7cyclictest8773-21diskmemload11:20:000
27209992313,7cyclictest541-21/usr/sbin/munin07:21:590
27209992312,5cyclictest636-21nscd08:53:540
2720999230,22cyclictest0-21swapper/011:24:380
2720999230,15cyclictest32150-21taskset12:26:560
2720999230,0cyclictest0-21swapper/009:18:140
2721099228,13cyclictest0-21swapper/109:47:261
2721099222,19cyclictest2800-21kworker/1:012:04:381
27210992210,9cyclictest0-21swapper/112:21:571
27210992210,9cyclictest0-21swapper/110:51:091
27210992210,7cyclictest0-21swapper/110:07:061
27210992210,5cyclictest0-21swapper/111:27:231
2721099220,22cyclictest0-21swapper/109:06:511
2721099220,1cyclictest10376-21apache_volume11:56:571
27209992218,4cyclictest795-21sendmail-mta11:30:040
27209992215,5cyclictest4725-21apache209:44:350
27209992210,5cyclictest0-21swapper/010:47:050
2721099215,10cyclictest0-21swapper/108:12:041
2721099213,10cyclictest0-21swapper/108:32:051
27210992120,1cyclictest4706-21apache209:45:311
27210992119,1cyclictest0-21swapper/112:07:051
27210992114,4cyclictest0-21swapper/111:18:311
27210992111,6cyclictest0-21swapper/107:12:061
27210992111,5cyclictest0-21swapper/110:02:041
27210992110,7cyclictest0-21swapper/109:36:571
27210992110,6cyclictest0-21swapper/107:41:581
27210992110,5cyclictest0-21swapper/108:06:581
27210992110,4cyclictest0-21swapper/110:51:581
27210992110,2cyclictest0-21swapper/108:01:561
27210992110,1cyclictest0-21swapper/110:00:151
2720999215,7cyclictest17493-21ls08:02:050
2720999214,9cyclictest0-21swapper/008:46:580
27209992119,1cyclictest0-21swapper/010:10:490
27209992118,2cyclictest8773-21diskmemload11:52:440
27209992116,4cyclictest4706-21apache212:15:340
27209992115,2cyclictest2724-21wc07:26:570
27209992110,6cyclictest0-21swapper/012:04:280
27209992110,1cyclictest0-21swapper/011:36:580
27209992110,11cyclictest0-21swapper/010:30:400
2721099209,6cyclictest0-21swapper/111:39:251
2721099203,10cyclictest0-21swapper/110:31:571
27210992020,0cyclictest231ktimersoftd/110:19:151
2721099201,8cyclictest0-21swapper/111:13:381
27210992016,3cyclictest795-21sendmail-mta11:24:241
27210992016,3cyclictest27207-21cyclictest09:16:581
27210992010,7cyclictest0-21swapper/107:47:011
27210992010,4cyclictest0-21swapper/109:28:451
27210992010,3cyclictest0-21swapper/110:21:581
2720999201,7cyclictest0-21swapper/011:12:020
27209992013,5cyclictest4725-21apache209:25:170
1583322010,0sleep00-21swapper/010:38:310
2721099199,3cyclictest0-21swapper/112:15:481
2721099197,9cyclictest0-21swapper/107:57:011
27210991919,0cyclictest0-21swapper/111:08:271
27210991916,2cyclictest4725-21apache210:38:421
27210991914,4cyclictest18540-21snmpd08:23:341
27210991914,3cyclictest4725-21apache211:45:101
27210991910,5cyclictest0-21swapper/107:31:471
27210991910,2cyclictest0-21swapper/107:51:591
2720999199,7cyclictest4706-21apache211:57:470
2720999192,9cyclictest0-21swapper/010:57:040
27209991918,1cyclictest1964-21apache207:17:020
27209991910,7cyclictest0-21swapper/009:56:250
27209991910,6cyclictest0-21swapper/008:07:020
27209991910,6cyclictest0-21swapper/007:52:080
27209991910,0cyclictest0-21swapper/009:16:060
2720999190,4cyclictest0-21swapper/007:31:450
2721099189,4cyclictest0-21swapper/109:53:421
2721099184,11cyclictest0-21swapper/108:17:071
2721099183,9cyclictest7015-21apache_accesses09:01:571
2721099183,7cyclictest0-21swapper/108:47:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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