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2025-10-27 - 08:13
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Mon Oct 27, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1456327057,8sleep10-21swapper/119:04:391
1440126754,8sleep00-21swapper/019:02:570
231172650,0sleep10-21swapper/123:52:181
153962580,2sleep11496699cyclictest20:32:101
14966993433,1cyclictest0-21swapper/122:42:271
14966993230,1cyclictest24-21ksoftirqd/121:51:561
14966993029,1cyclictest24-21ksoftirqd/123:01:571
1496599290,2cyclictest0-21swapper/000:22:180
14966992817,3cyclictest0-21swapper/119:57:181
14966992810,3cyclictest0-21swapper/123:41:151
1496599280,26cyclictest307-21ssh22:37:330
14965992711,5cyclictest0-21swapper/000:19:220
14965992710,4cyclictest0-21swapper/023:14:580
14966992621,4cyclictest709-21irqbalance23:05:311
14966992610,4cyclictest0-21swapper/121:07:181
1496699260,2cyclictest28849-21/usr/sbin/munin23:17:101
1496599260,1cyclictest6420-21ssh00:14:180
1496599260,15cyclictest2236-21if_err_eth221:57:110
1496599260,11cyclictest0-21swapper/023:04:450
1496699250,13cyclictest0-21swapper/121:12:041
14965992522,3cyclictest7-21ksoftirqd/021:06:570
1496599250,19cyclictest28637-21diskmemload23:22:080
14966992424,0cyclictest0-21swapper/119:12:481
1496699241,0cyclictest0-21swapper/122:00:271
14966992410,6cyclictest0-21swapper/120:57:151
1496699240,1cyclictest0-21swapper/121:31:271
1496599242,21cyclictest22477-21kworker/u4:022:20:560
14966992310,9cyclictest0-21swapper/100:12:421
14966992310,5cyclictest0-21swapper/122:37:141
14966992310,3cyclictest0-21swapper/122:53:351
14966992310,11cyclictest0-21swapper/123:08:351
14965992322,0cyclictest7-21ksoftirqd/020:16:560
14965992319,2cyclictest0-21swapper/021:18:450
14965992318,3cyclictest22910-21apache223:51:170
1496599231,16cyclictest0-21swapper/000:27:150
1496599231,0cyclictest28637-21diskmemload00:07:350
14965992310,7cyclictest0-21swapper/021:32:090
1496599230,9cyclictest19684-21ssh21:37:110
1496599230,3cyclictest0-21swapper/022:28:170
1496699222,2cyclictest0-21swapper/123:50:161
1496699222,16cyclictest2280-21rm23:24:191
14966992218,1cyclictest0-21swapper/123:28:081
1496699221,7cyclictest0-21swapper/121:42:551
14966992210,6cyclictest0-21swapper/100:17:151
14966992210,4cyclictest0-21swapper/123:32:061
1496599225,7cyclictest0-21swapper/021:12:090
1496599221,17cyclictest0-21swapper/023:35:110
1496599220,3cyclictest0-21swapper/022:47:020
1496599220,2cyclictest0-21swapper/021:08:060
2051122110,0sleep10-21swapper/100:32:511
14966992119,1cyclictest27832-21ssh23:15:481
14966992110,6cyclictest0-21swapper/121:02:101
14966992110,4cyclictest0-21swapper/122:17:031
14965992119,1cyclictest598-21lldpd22:54:530
14965992117,3cyclictest22884-21apache222:22:010
14965992115,5cyclictest22884-21apache223:42:330
14965992113,5cyclictest0-21swapper/021:42:100
1496599211,19cyclictest0-21swapper/022:34:550
1496599211,10cyclictest26940-21diskstats21:47:090
14965992110,9cyclictest0-21swapper/020:27:130
14965992110,8cyclictest0-21swapper/021:54:050
1496599210,11cyclictest4085-21fw_packets23:27:110
800222010,0sleep10-21swapper/121:21:581
2808322010,1sleep00-21swapper/019:39:340
1499322010,0sleep00-21swapper/021:31:230
1496699202,17cyclictest0-21swapper/100:22:001
14966992017,2cyclictest22884-21apache219:44:531
14966992011,5cyclictest75132sleep122:04:011
14966992011,5cyclictest0-21swapper/122:32:181
14966992010,6cyclictest0-21swapper/122:30:241
14966992010,3cyclictest0-21swapper/120:37:071
1496699200,2cyclictest0-21swapper/121:35:131
1496599205,6cyclictest0-21swapper/020:52:110
1496599202,3cyclictest0-21swapper/022:03:240
14965992016,1cyclictest0-21swapper/000:02:010
14965992011,4cyclictest7295-21kworker/0:000:01:560
14965992011,1cyclictest0-21swapper/023:01:460
14965992010,7cyclictest0-21swapper/023:07:100
14965992010,2cyclictest0-21swapper/023:37:440
1496599200,19cyclictest0-21swapper/022:44:510
680721910,0sleep10-21swapper/121:19:381
3194321910,0sleep10-21swapper/121:52:451
1681621910,0sleep00-21swapper/020:34:500
1496699197,6cyclictest30651-21/usr/sbin/munin00:02:171
14966991919,0cyclictest0-21swapper/100:11:481
1496699191,3cyclictest0-21swapper/123:43:311
14966991910,4cyclictest231ktimersoftd/120:12:121
14966991910,4cyclictest0-21swapper/121:37:151
14966991910,4cyclictest0-21swapper/119:27:161
14966991910,2cyclictest0-21swapper/100:27:321
1496599195,7cyclictest0-21swapper/019:22:190
1496599194,11cyclictest0-21swapper/020:02:160
1496599193,2cyclictest28637-21diskmemload22:09:330
14965991917,1cyclictest20111-21ls00:32:180
1496599191,6cyclictest31390-21mailstats19:47:180
14965991916,2cyclictest22910-21apache220:48:440
14965991910,4cyclictest0-21swapper/022:12:100
14965991910,4cyclictest0-21swapper/019:32:510
14965991910,3cyclictest0-21swapper/020:22:160
14965991910,2cyclictest0-21swapper/021:25:260
1496699189,4cyclictest0-21swapper/119:07:121
1496699184,8cyclictest0-21swapper/120:47:101
1496699183,8cyclictest0-21swapper/120:42:111
14966991811,4cyclictest0-21swapper/100:00:001
14966991810,8cyclictest0-21swapper/122:47:391
14966991810,7cyclictest0-21swapper/119:26:441
14966991810,6cyclictest0-21swapper/120:23:551
14966991810,4cyclictest0-21swapper/120:07:101
14966991810,3cyclictest0-21swapper/120:02:121
14966991810,3cyclictest0-21swapper/119:32:521
14966991810,1cyclictest0-21swapper/122:25:431
14966991810,1cyclictest0-21swapper/122:15:211
1496599183,8cyclictest1111-21runrttasks19:07:130
14965991811,3cyclictest0-21swapper/020:17:090
14965991810,0cyclictest0-21swapper/020:07:160
1496599180,17cyclictest19031-21cat20:41:560
2803821710,0sleep10-21swapper/119:39:071
1496699173,7cyclictest0-21swapper/120:27:091
14966991711,3cyclictest0-21swapper/122:07:421
14966991710,7cyclictest0-21swapper/119:51:591
14966991710,6cyclictest0-21swapper/120:17:551
1496599173,5cyclictest29427-21ssh23:17:140
1496599172,8cyclictest0-21swapper/020:42:150
14965991710,4cyclictest0-21swapper/023:53:030
14965991710,3cyclictest0-21swapper/020:01:140
14965991710,3cyclictest0-21swapper/019:27:110
1496699168,5cyclictest231ktimersoftd/119:47:101
1496599165,6cyclictest0-21swapper/019:52:120
14965991615,1cyclictest24946-21apache_accesses20:57:100
14965991610,5cyclictest7295-21kworker/0:019:13:430
14965991610,2cyclictest0-21swapper/019:42:100
1496599160,11cyclictest0-21swapper/019:18:120
14966991513,1cyclictest7688-21kworker/1:019:18:201
14966991510,1cyclictest0-21swapper/120:52:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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