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2025-11-10 - 08:55
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Mon Nov 10, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2842721080,0sleep028426-21memory23:42:090
2433827057,9sleep10-21swapper/119:06:161
2401726755,8sleep00-21swapper/019:02:550
24576993229,3cyclictest0-21swapper/019:53:430
24576993028,2cyclictest0-21swapper/021:40:220
24576993010,2cyclictest0-21swapper/021:25:110
24576992929,0cyclictest0-21swapper/021:07:430
24576992910,2cyclictest0-21swapper/022:19:470
24576992828,0cyclictest0-21swapper/000:32:480
24577992725,0cyclictest0-21swapper/122:37:351
24577992718,8cyclictest30440-21apache222:48:481
2457799263,22cyclictest20813-21kworker/u4:122:58:351
2457799262,22cyclictest3606-21ssh21:45:081
24577992621,4cyclictest9322-21sshd22:34:191
24577992617,3cyclictest97850irq/107-eth1-rx22:03:161
24577992610,6cyclictest0-21swapper/100:01:591
24577992512,13cyclictest0-21swapper/121:11:291
24577992510,5cyclictest0-21swapper/123:22:041
24576992524,0cyclictest0-21swapper/021:45:070
24576992520,5cyclictest30440-21apache200:00:020
2457799242,3cyclictest0-21swapper/121:34:121
24577992423,0cyclictest0-21swapper/121:27:241
24577992410,7cyclictest0-21swapper/120:37:121
24576992423,1cyclictest0-21swapper/021:59:310
24576992414,5cyclictest30440-21apache221:33:470
24576992410,9cyclictest0-21swapper/023:02:190
24576992410,7cyclictest0-21swapper/000:27:080
24576992410,1cyclictest0-21swapper/022:26:290
24576992410,10cyclictest0-21swapper/020:16:210
24577992320,0cyclictest0-21swapper/100:17:071
24577992314,5cyclictest30440-21apache222:01:511
24577992311,6cyclictest0-21swapper/122:52:311
24577992310,8cyclictest0-21swapper/123:09:471
2457799230,20cyclictest1951-21rm22:25:141
24576992321,2cyclictest81ktimersoftd/023:32:340
24576992317,5cyclictest2001-21ls20:56:500
24576992310,6cyclictest0-21swapper/022:44:450
24577992219,2cyclictest709-21irqbalance00:16:351
24577992212,4cyclictest0-21swapper/120:22:101
24577992210,6cyclictest0-21swapper/100:27:151
24576992216,5cyclictest30440-21apache223:26:540
24576992210,6cyclictest0-21swapper/022:38:060
24577992120,1cyclictest0-21swapper/122:10:581
24577992120,0cyclictest231ktimersoftd/119:35:161
24577992112,4cyclictest0-21swapper/121:20:031
24577992110,6cyclictest0-21swapper/121:47:031
2457799210,3cyclictest0-21swapper/100:10:161
2457799210,1cyclictest0-21swapper/100:24:481
2457699213,13cyclictest0-21swapper/022:32:060
24576992118,2cyclictest709-21irqbalance20:31:450
24576992110,7cyclictest0-21swapper/000:11:280
2457699210,13cyclictest0-21swapper/023:17:030
2975522010,1sleep00-21swapper/019:17:170
2457799208,7cyclictest0-21swapper/122:17:011
24577992019,1cyclictest0-21swapper/120:16:491
24577992017,2cyclictest817-21apache219:56:461
24577992017,2cyclictest24-21ksoftirqd/120:46:501
24577992014,3cyclictest0-21swapper/122:12:451
2457799201,18cyclictest0-21swapper/123:32:281
24577992011,6cyclictest0-21swapper/120:32:071
24577992010,9cyclictest0-21swapper/123:50:021
2457699201,5cyclictest0-21swapper/022:47:050
24576992010,7cyclictest0-21swapper/022:57:070
24576992010,5cyclictest1111-21runrttasks22:02:390
24576992010,5cyclictest0-21swapper/023:37:500
24576992010,5cyclictest0-21swapper/022:15:310
24576992010,3cyclictest0-21swapper/020:07:060
2457699200,3cyclictest18820-21rm00:12:210
2457699200,15cyclictest0-21swapper/000:18:070
3164221910,0sleep10-21swapper/120:47:111
2457799196,9cyclictest0-21swapper/119:12:041
2457799192,8cyclictest5270-21diskstats23:12:031
24577991919,0cyclictest0-21swapper/119:50:421
24577991918,1cyclictest0-21swapper/100:00:281
24577991916,3cyclictest18540-21snmpd20:09:151
24577991913,3cyclictest97750irq/106-eth1-rx23:39:341
24577991910,7cyclictest97850irq/107-eth1-rx21:55:071
24577991910,4cyclictest0-21swapper/123:53:531
24577991910,4cyclictest0-21swapper/123:27:071
24577991910,4cyclictest0-21swapper/119:07:051
2457799190,13cyclictest0-21swapper/119:41:391
2457699196,4cyclictest5842-21diskmemload21:47:060
24576991917,1cyclictest81ktimersoftd/020:43:330
24576991913,5cyclictest30440-21apache223:24:450
24576991910,5cyclictest0-21swapper/019:32:060
24576991910,1cyclictest0-21swapper/020:02:110
2444321910,0sleep00-21swapper/022:54:200
2681121810,0sleep00-21swapper/020:36:540
2457799187,5cyclictest19166-21ls21:22:131
2457799186,4cyclictest10923-21/usr/sbin/munin21:12:081
2457799184,7cyclictest5842-21diskmemload23:41:531
24577991810,5cyclictest0-21swapper/123:06:141
24577991810,4cyclictest0-21swapper/122:27:061
24577991810,4cyclictest0-21swapper/119:31:021
24577991810,4cyclictest0-21swapper/119:17:081
24577991810,3cyclictest0-21swapper/121:06:101
24577991810,1cyclictest0-21swapper/120:28:361
2457699185,5cyclictest15051-21/usr/sbin/munin21:17:100
2457699185,5cyclictest0-21swapper/019:22:060
2457699183,8cyclictest0-21swapper/019:42:040
24576991813,3cyclictest8930-21munin-node20:00:070
24576991811,5cyclictest0-21swapper/021:52:070
24576991810,5cyclictest0-21swapper/019:37:050
24576991810,4cyclictest0-21swapper/023:50:520
24576991810,1cyclictest0-21swapper/021:12:080
24576991810,0cyclictest0-21swapper/023:15:470
1058221810,0sleep10-21swapper/123:18:051
2790221710,0sleep00-21swapper/019:13:100
2457799174,5cyclictest2012-21munin-run20:56:501
24577991711,4cyclictest97850irq/107-eth1-rx21:37:061
24577991710,2cyclictest0-21swapper/119:57:131
2457699174,5cyclictest0-21swapper/019:07:040
24576991717,0cyclictest0-21swapper/000:22:050
24576991716,1cyclictest24574-21cyclictest21:05:500
24576991712,3cyclictest0-21swapper/022:09:340
24576991710,3cyclictest0-21swapper/021:30:380
24576991710,3cyclictest0-21swapper/019:27:120
24576991710,2cyclictest0-21swapper/000:02:080
24576991710,1cyclictest0-21swapper/020:22:210
24576991710,0cyclictest0-21swapper/020:17:050
2048321710,0sleep10-21swapper/120:17:431
2457799164,11cyclictest0-21swapper/119:42:091
2457799163,7cyclictest13598-21/usr/sbin/munin20:02:051
2457799162,7cyclictest0-21swapper/100:32:061
2457799161,6cyclictest0-21swapper/120:57:041
24577991610,6cyclictest0-21swapper/122:46:121
2457699165,7cyclictest4833-21awk23:11:510
2457699164,1cyclictest0-21swapper/022:27:540
24576991613,2cyclictest81ktimersoftd/020:32:210
24576991610,2cyclictest0-21swapper/020:57:100
24576991510,2cyclictest0-21swapper/023:52:430
24576991510,2cyclictest0-21swapper/019:47:020
24577991414,0cyclictest0-21swapper/119:22:111
24576991410,2cyclictest0-21swapper/020:47:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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