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2025-11-07 - 11:06
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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 Fri Nov 07, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1310527049,8sleep00-21swapper/019:06:030
1284926650,8sleep10-21swapper/119:03:211
106202600,0sleep00-21swapper/023:37:320
13366994040,0cyclictest0-21swapper/000:02:270
13366993410,1cyclictest0-21swapper/022:09:500
13366993324,8cyclictest26956-21diskmemload21:27:380
13367993210,2cyclictest0-21swapper/122:10:341
13367993110,13cyclictest0-21swapper/122:32:061
13367992910,15cyclictest0-21swapper/122:20:241
13367992810,13cyclictest0-21swapper/119:51:061
13366992810,16cyclictest0-21swapper/023:30:050
13367992710,5cyclictest0-21swapper/122:39:281
13367992710,17cyclictest0-21swapper/100:15:531
13367992622,2cyclictest6425-21apache222:59:481
1336799260,3cyclictest4057-21if_eth022:02:061
13366992626,0cyclictest0-21swapper/023:24:250
13366992610,8cyclictest0-21swapper/021:12:280
1336699253,21cyclictest0-21swapper/022:57:150
1336699252,22cyclictest0-21swapper/021:43:090
13366992510,6cyclictest0-21swapper/022:35:210
1336699250,5cyclictest0-21swapper/000:19:290
284432240,1sleep128445-21idleruntime-cro21:51:521
13367992422,2cyclictest6431-21apache223:25:531
13367992420,3cyclictest22003-21sh23:09:531
13367992414,7cyclictest588-21gmain20:11:511
13367992410,6cyclictest0-21swapper/119:27:101
1336799240,20cyclictest15208-21rm23:44:091
1336699249,10cyclictest636-21nscd21:35:070
13366992424,0cyclictest0-21swapper/019:50:360
13366992422,1cyclictest25774-21ssh23:15:150
1336799234,11cyclictest0-21swapper/123:02:041
13367992323,0cyclictest0-21swapper/123:36:101
13367992316,2cyclictest22237-21ssh23:53:411
13367992315,5cyclictest16340-1kworker/u5:000:33:231
13367992314,4cyclictest13364-21cyclictest21:24:371
13367992310,9cyclictest0-21swapper/123:16:591
13367992310,8cyclictest0-21swapper/121:42:151
13367992310,5cyclictest0-21swapper/122:22:041
13367992310,1cyclictest0-21swapper/120:27:151
1336799230,7cyclictest0-21swapper/122:42:111
13366992322,1cyclictest10840-21munin-node21:57:070
13366992318,4cyclictest23570-21snmpd22:17:180
13366992317,3cyclictest134-21jbd2/sda1-800:09:550
13366992310,2cyclictest0-21swapper/021:23:350
13367992222,0cyclictest30428-21ssh21:10:571
1336699226,9cyclictest81ktimersoftd/022:42:140
13366992214,4cyclictest97850irq/107-eth1-rx21:07:490
13366992210,6cyclictest0-21swapper/022:16:510
13366992210,5cyclictest0-21swapper/023:05:450
13366992210,5cyclictest0-21swapper/022:52:050
13366992210,5cyclictest0-21swapper/019:57:050
594422110,0sleep10-21swapper/120:12:061
1336799214,9cyclictest0-21swapper/120:57:141
1336799214,8cyclictest26546-21perf23:16:521
13367992120,1cyclictest0-21swapper/120:05:061
13367992118,1cyclictest0-21swapper/121:18:041
13367992110,5cyclictest0-21swapper/100:22:021
13367992110,4cyclictest0-21swapper/120:42:051
13367992110,3cyclictest0-21swapper/123:37:051
13367992110,0cyclictest0-21swapper/122:12:241
1336699218,12cyclictest0-21swapper/021:17:490
1336699215,9cyclictest0-21swapper/023:07:050
13366992110,5cyclictest0-21swapper/022:37:220
1336799205,9cyclictest0-21swapper/120:52:061
13367992019,1cyclictest0-21swapper/120:48:501
13367992012,3cyclictest0-21swapper/100:30:181
13367992010,1cyclictest0-21swapper/120:17:071
1336799200,1cyclictest0-21swapper/121:16:191
1336699205,10cyclictest0-21swapper/020:32:110
1336699204,2cyclictest26944-21sh21:06:520
1336699203,9cyclictest23061-21grep19:32:050
13366992016,2cyclictest0-21swapper/022:06:260
1336699201,17cyclictest0-21swapper/022:27:100
13366992011,6cyclictest0-21swapper/020:07:090
13366992010,5cyclictest0-21swapper/000:34:520
13366992010,4cyclictest0-21swapper/000:21:530
1336699200,8cyclictest636-21nscd23:58:440
1336799198,10cyclictest20023-21kworker/1:219:39:591
1336799193,11cyclictest0-21swapper/123:51:211
1336799192,8cyclictest0-21swapper/123:57:081
13367991918,1cyclictest6425-21apache219:25:461
13367991917,1cyclictest709-21irqbalance21:57:061
13367991917,1cyclictest0-21swapper/100:02:041
13367991914,2cyclictest26805-21taskset21:05:331
13367991913,5cyclictest6431-21apache200:07:581
13367991913,1cyclictest0-21swapper/121:37:091
13367991911,3cyclictest0-21swapper/119:57:101
13367991910,9cyclictest0-21swapper/122:48:001
13367991910,7cyclictest0-21swapper/121:29:501
13367991910,6cyclictest0-21swapper/119:52:111
13367991910,5cyclictest0-21swapper/123:27:101
1336699196,5cyclictest6424-21apache219:22:060
1336699195,9cyclictest0-21swapper/022:47:110
1336699194,9cyclictest20648-21ssh23:52:060
13366991919,0cyclictest81ktimersoftd/019:19:320
13366991918,0cyclictest7-21ksoftirqd/023:47:130
1336699191,1cyclictest0-21swapper/021:47:060
13366991911,4cyclictest23570-21snmpd20:56:210
13366991910,4cyclictest32452-21kworker/0:021:38:000
13366991910,4cyclictest0-21swapper/000:27:520
13366991910,1cyclictest0-21swapper/023:35:580
969621810,0sleep10-21swapper/122:52:231
13367991813,2cyclictest15443-21turbostat20:41:471
13367991810,5cyclictest6425-21apache219:15:001
13367991810,3cyclictest0-21swapper/121:54:581
1336699185,7cyclictest0-21swapper/019:12:070
1336699181,9cyclictest0-21swapper/020:37:170
13366991817,0cyclictest7-21ksoftirqd/019:11:350
13366991810,7cyclictest0-21swapper/023:17:500
13366991810,5cyclictest0-21swapper/020:50:270
13366991810,4cyclictest0-21swapper/000:12:140
13366991810,2cyclictest0-21swapper/023:42:030
1336799172,14cyclictest0-21swapper/119:34:301
13367991715,1cyclictest7166-21sh00:17:161
13367991712,4cyclictest28119-21vmstat19:42:131
13367991711,4cyclictest23570-21snmpd21:32:231
13367991711,3cyclictest817-21apache220:22:271
1336699174,6cyclictest0-21swapper/021:52:030
1336699173,7cyclictest0-21swapper/020:22:110
1336699173,3cyclictest636-21nscd22:21:580
13366991715,1cyclictest6431-21apache220:19:040
13366991711,3cyclictest98050irq/109-eth1-tx20:31:150
13366991710,4cyclictest0-21swapper/019:52:000
13366991710,2cyclictest0-21swapper/019:42:120
2240721610,0sleep00-21swapper/019:27:420
1521421610,2sleep10-21swapper/120:34:491
1336799165,4cyclictest13386-21/usr/sbin/munin19:07:061
1336799161,6cyclictest0-21swapper/119:18:441
13367991615,1cyclictest6425-21apache222:28:091
13366991611,3cyclictest692-21ntpd20:14:460
13366991610,2cyclictest0-21swapper/019:37:040
13366991610,0cyclictest0-21swapper/020:02:010
13366991510,4cyclictest0-21swapper/020:42:430
1336699132,8cyclictest24535-21head20:57:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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