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2026-06-08 - 04:42
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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 highest latencies:
System rackcslot2.osadl.org (updated Mon Jun 08, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2896927249,18sleep00-21swapper/019:04:440
2918527150,16sleep10-21swapper/119:07:001
17042600,0sleep00-21swapper/000:33:010
29536994211,30cyclictest1545-21ssh22:20:471
29536994210,27cyclictest91rcu_preempt23:56:091
29536994210,25cyclictest0-21swapper/100:08:151
29536994110,30cyclictest0-21swapper/119:44:001
29536994110,29cyclictest25714-21ssh22:09:301
29536994010,30cyclictest0-21swapper/123:59:121
29536994010,29cyclictest0-21swapper/123:32:511
29536994010,29cyclictest0-21swapper/122:44:001
29536994010,29cyclictest0-21swapper/121:19:391
29536994010,29cyclictest0-21swapper/119:19:001
29536993910,29cyclictest0-21swapper/122:51:131
29536993910,29cyclictest0-21swapper/100:35:161
29536993910,28cyclictest0-21swapper/123:28:031
29536993910,28cyclictest0-21swapper/123:05:321
29536993810,28cyclictest0-21swapper/123:34:331
29536993810,28cyclictest0-21swapper/121:47:361
29536993810,28cyclictest0-21swapper/121:38:381
29536993810,27cyclictest0-21swapper/123:43:451
29536993713,23cyclictest91rcu_preempt22:14:201
29536993712,24cyclictest0-21swapper/123:43:561
29536993712,24cyclictest0-21swapper/123:43:561
29536993710,27cyclictest0-21swapper/122:08:061
29536993710,27cyclictest0-21swapper/119:24:051
29536993710,25cyclictest0-21swapper/122:24:021
2953699370,36cyclictest27540-21python21:29:031
2953699370,35cyclictest9667-21memory21:04:001
2953699370,35cyclictest8763-21/usr/sbin/munin23:14:011
29536993613,18cyclictest91rcu_preempt21:26:441
29536993610,26cyclictest0-21swapper/123:50:101
29536993610,26cyclictest0-21swapper/123:10:271
29536993610,25cyclictest0-21swapper/122:38:201
29536993610,25cyclictest0-21swapper/121:57:291
29536993610,25cyclictest0-21swapper/120:36:221
2953699360,35cyclictest7390-21irqstats22:29:001
2953699360,35cyclictest24312-21df_inode20:18:581
2953699360,35cyclictest10792-21diskmemload00:25:011
29536993511,23cyclictest32645-21ls19:14:051
29536993510,25cyclictest0-21swapper/121:13:591
29536993510,24cyclictest0-21swapper/121:08:581
29536993510,23cyclictest0-21swapper/123:19:301
29536993510,23cyclictest0-21swapper/100:29:561
2953699350,34cyclictest5952-21ntp_states20:54:021
2953699350,34cyclictest25445-21apache_accesses22:53:571
2953699350,34cyclictest23357-21apache_processe00:18:561
2953699340,33cyclictest17464-21switchtime19:59:071
2953699340,33cyclictest1695-21apache_processe21:38:571
2953699340,33cyclictest15339-21mailstats22:39:041
2953699340,33cyclictest10792-21diskmemload21:52:351
2953699340,33cyclictest0-21swapper/120:03:581
2953699340,33cyclictest0-21swapper/120:03:581
268382340,2sleep02953599cyclictest21:28:570
2953699330,32cyclictest7895-21sh20:59:021
2953699330,32cyclictest5113-21df19:28:571
2953699330,32cyclictest20174-21awk00:14:011
2953699330,32cyclictest1199-21runrttasks20:26:561
2953699330,32cyclictest100350irq/108-eth1-tx22:00:051
2953699330,32cyclictest0-21swapper/122:59:001
2953699330,32cyclictest0-21swapper/100:08:571
2953699320,31cyclictest14488-21apache_accesses19:53:551
2953699320,31cyclictest0-21swapper/120:13:571
2953699320,31cyclictest0-21swapper/119:33:571
2953699320,30cyclictest8749-21apache_accesses19:38:561
2953699310,30cyclictest5115-21sed20:53:441
2953699310,30cyclictest30097-21irqstats19:08:591
2953699310,30cyclictest0-21swapper/119:51:301
2953699300,29cyclictest0-21swapper/120:29:001
2953699290,28cyclictest0-21swapper/120:43:561
29535992917,11cyclictest0-21swapper/019:08:590
2953699281,26cyclictest0-21swapper/120:09:571
29535992710,3cyclictest0-21swapper/019:44:190
29535992624,1cyclictest4869-21ssh21:42:550
2953699250,24cyclictest0-21swapper/120:40:101
29535992510,10cyclictest0-21swapper/023:05:350
2953599250,15cyclictest0-21swapper/020:34:010
29535992417,6cyclictest1535-21apache223:43:060
29535992417,5cyclictest32070-21latency19:14:000
29535992410,6cyclictest0-21swapper/021:54:020
29535992318,2cyclictest0-21swapper/023:13:590
29535992310,7cyclictest0-21swapper/021:23:570
29535992214,5cyclictest0-21swapper/020:52:520
29535992210,8cyclictest0-21swapper/022:05:350
29535992119,1cyclictest770-21irqbalance21:47:250
29535992119,1cyclictest0-21swapper/000:13:140
29535992118,3cyclictest1519-21apache222:49:260
29535992118,2cyclictest1519-21apache223:19:540
29535992116,4cyclictest1535-21apache223:56:590
29535992116,2cyclictest0-21swapper/000:08:390
29535992112,4cyclictest0-21swapper/022:13:570
29535992110,5cyclictest0-21swapper/022:44:050
2953599210,5cyclictest0-21swapper/000:19:460
1088522110,0sleep00-21swapper/023:59:480
2953599206,9cyclictest32608-21pmu-power20:39:030
2953599203,10cyclictest0-21swapper/021:52:170
29535992020,0cyclictest81ktimersoftd/021:12:580
29535992015,4cyclictest1535-21apache223:29:500
2953599201,4cyclictest0-21swapper/000:24:410
29535992013,3cyclictest29533-21cyclictest19:33:590
29535992012,4cyclictest0-21swapper/023:23:580
2953599200,1cyclictest0-21swapper/023:50:250
1758022010,0sleep00-21swapper/021:16:200
449221910,0sleep00-21swapper/022:24:170
2953599195,7cyclictest0-21swapper/019:24:020
2953599195,10cyclictest0-21swapper/019:18:560
2953599193,9cyclictest0-21swapper/022:18:590
29535991919,0cyclictest0-21swapper/023:00:230
29535991910,4cyclictest0-21swapper/022:09:010
672221810,6sleep00-21swapper/022:28:460
622721810,0sleep00-21swapper/019:29:240
2953599184,9cyclictest0-21swapper/020:24:000
2953599184,10cyclictest0-21swapper/023:13:040
2953599182,10cyclictest0-21swapper/023:33:590
29535991816,1cyclictest2298-21/usr/sbin/munin00:33:560
29535991816,1cyclictest159912sleep022:39:530
29535991815,2cyclictest18916-21ssh22:00:450
29535991812,1cyclictest0-21swapper/019:58:580
29535991810,5cyclictest0-21swapper/019:49:010
29535991810,5cyclictest0-21swapper/000:17:050
29535991810,4cyclictest0-21swapper/020:53:570
29535991810,4cyclictest0-21swapper/019:53:560
29535991810,3cyclictest0-21swapper/022:34:050
29535991810,3cyclictest0-21swapper/020:28:560
2953599180,8cyclictest0-21swapper/021:03:560
2953599177,3cyclictest0-21swapper/020:43:590
2953599172,9cyclictest0-21swapper/021:34:030
29535991713,2cyclictest0-21swapper/021:19:150
29535991710,4cyclictest0-21swapper/020:58:570
29535991710,4cyclictest0-21swapper/020:08:550
29535991710,3cyclictest0-21swapper/019:39:050
29535991710,2cyclictest0-21swapper/020:15:410
29535991710,1cyclictest0-21swapper/020:03:570
29535991710,1cyclictest0-21swapper/020:03:570
2953599166,6cyclictest0-21swapper/023:43:580
2953599166,6cyclictest0-21swapper/023:43:580
2953599163,8cyclictest0-21swapper/020:19:040
29535991610,2cyclictest0-21swapper/022:56:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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