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2025-12-08 - 16:58
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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 Dec 08, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2737427058,8sleep10-21swapper/107:03:101
2755226957,8sleep00-21swapper/007:05:000
27890994210,31cyclictest0-21swapper/012:26:510
27890994210,20cyclictest91rcu_preempt08:01:310
27890994110,30cyclictest0-21swapper/010:16:590
27890994010,30cyclictest0-21swapper/011:55:270
27890994010,30cyclictest0-21swapper/010:01:590
27890994010,29cyclictest0-21swapper/010:51:520
27890994010,18cyclictest91rcu_preempt09:07:340
27890993913,25cyclictest0-21swapper/008:06:500
27890993910,28cyclictest15545-21ls10:37:010
27890993910,28cyclictest0-21swapper/009:27:020
27890993910,26cyclictest0-21swapper/011:09:030
27890993910,25cyclictest0-21swapper/007:50:130
27890993910,18cyclictest0-21swapper/011:47:140
27890993811,17cyclictest91rcu_preempt09:50:300
27890993810,28cyclictest0-21swapper/011:29:150
27890993810,28cyclictest0-21swapper/009:15:270
27890993810,27cyclictest0-21swapper/012:34:560
27890993810,27cyclictest0-21swapper/011:05:330
27890993810,27cyclictest0-21swapper/010:49:480
27890993810,27cyclictest0-21swapper/010:27:310
27890993810,27cyclictest0-21swapper/008:16:490
27890993810,27cyclictest0-21swapper/007:06:570
27890993810,26cyclictest0-21swapper/010:01:200
27890993810,18cyclictest0-21swapper/012:18:230
27890993710,26cyclictest0-21swapper/011:32:010
27890993710,26cyclictest0-21swapper/007:25:110
27890993710,24cyclictest0-21swapper/012:13:130
27890993710,22cyclictest0-21swapper/009:02:000
2789099370,36cyclictest30175-21fw_packets07:11:510
27890993610,26cyclictest0-21swapper/008:21:560
27890993610,26cyclictest0-21swapper/007:17:060
27890993610,14cyclictest91rcu_preempt10:07:020
2789099360,35cyclictest29760-21/usr/sbin/munin12:21:540
2789099360,35cyclictest27747-21/usr/sbin/munin10:11:550
2789099360,35cyclictest26744-21df_inode08:26:540
2789099360,35cyclictest2054-21forks08:46:530
2789099360,35cyclictest18566-21ntp_states09:16:590
2789099360,35cyclictest13314-21diskstats07:51:540
27890993510,24cyclictest0-21swapper/011:40:390
27890993510,24cyclictest0-21swapper/009:21:570
27890993510,21cyclictest0-21swapper/008:12:310
27890993510,12cyclictest91rcu_preempt11:59:020
27890993510,11cyclictest0-21swapper/011:15:590
2789099350,34cyclictest5808-21ssh10:25:450
2789099350,34cyclictest30283-21sed10:56:580
2789099350,34cyclictest13473-21ssh11:16:570
2789099350,34cyclictest0-21swapper/009:51:560
27890993411,18cyclictest91rcu_preempt09:36:570
2789099340,33cyclictest4532-21apache_accesses09:41:510
2789099340,33cyclictest3936-21/usr/sbin/munin07:26:550
2789099340,33cyclictest369-21users11:42:000
2789099340,33cyclictest19424-21ssh10:42:140
2789099340,33cyclictest19101-21ssh11:24:580
2789099340,33cyclictest14402-21apache_processe12:01:530
2789099340,33cyclictest10466-21apache_accesses10:31:520
2789099340,33cyclictest0-21swapper/008:01:530
2789099340,32cyclictest0-21swapper/007:36:500
27890993310,21cyclictest0-21swapper/009:32:180
27890993310,21cyclictest0-21swapper/009:00:220
2789099330,32cyclictest9389-21diskmemload12:06:430
2789099330,28cyclictest28441-21apache_accesses08:31:490
27890993210,22cyclictest0-21swapper/007:42:100
2789099320,31cyclictest31158-21awk08:36:560
27891993110,20cyclictest0-21swapper/109:09:311
27890993114,17cyclictest0-21swapper/008:52:480
27890993110,17cyclictest0-21swapper/007:32:510
2789099310,30cyclictest32732-21if_err_eth208:41:550
27891992828,0cyclictest0-21swapper/111:13:451
27891992521,1cyclictest4910-21cstates11:06:511
27891992510,4cyclictest0-21swapper/109:56:461
2789199244,11cyclictest0-21swapper/110:31:551
27891992417,4cyclictest5337-21apache210:02:581
27891992413,8cyclictest97750irq/106-eth1-rx09:45:511
27891992410,7cyclictest0-21swapper/108:31:501
27891992410,13cyclictest0-21swapper/108:44:441
27891992410,12cyclictest0-21swapper/110:10:221
27891992410,0cyclictest0-21swapper/110:12:191
2789199233,14cyclictest0-21swapper/107:31:581
27891992319,3cyclictest5337-21apache209:48:141
2789199231,6cyclictest0-21swapper/110:30:461
2789199231,3cyclictest0-21swapper/112:34:481
27891992312,5cyclictest27888-21cyclictest12:06:511
27891992311,6cyclictest97850irq/107-eth1-rx12:31:341
27891992310,9cyclictest0-21swapper/107:41:501
2789199226,9cyclictest0-21swapper/107:52:011
2789199225,11cyclictest0-21swapper/109:16:521
2789199224,12cyclictest0-21swapper/111:31:511
27891992217,4cyclictest5353-21apache210:39:101
27891992216,5cyclictest0-21swapper/107:21:541
27891992215,4cyclictest30673-21ssh11:40:211
68322110,0sleep10-21swapper/110:17:451
2789199213,11cyclictest0-21swapper/108:26:541
27891992119,1cyclictest5353-21apache211:00:521
27891992116,4cyclictest5337-21apache211:25:201
27891992114,2cyclictest15682-21unixbench_singl12:02:031
27891992111,4cyclictest97850irq/107-eth1-rx09:55:501
27891992110,1cyclictest0-21swapper/110:51:551
2789199204,9cyclictest0-21swapper/107:06:571
2789199203,12cyclictest21676-21latency_hist10:46:391
27891992010,8cyclictest0-21swapper/108:12:481
27891992010,6cyclictest0-21swapper/109:28:431
2789199193,10cyclictest0-21swapper/112:16:541
2789199192,11cyclictest0-21swapper/108:02:471
27891991918,1cyclictest5353-21apache209:15:351
27891991917,2cyclictest231ktimersoftd/107:56:591
27891991913,4cyclictest27888-21cyclictest10:47:101
27891991910,6cyclictest0-21swapper/107:13:451
27891991910,3cyclictest0-21swapper/109:35:561
27891991910,3cyclictest0-21swapper/107:36:501
27891991910,2cyclictest0-21swapper/108:46:561
2789199183,8cyclictest0-21swapper/109:21:521
2789199183,6cyclictest18850-21seq08:06:481
2789199182,9cyclictest0-21swapper/112:21:521
2789199182,9cyclictest0-21swapper/111:52:021
27891991818,0cyclictest27888-21cyclictest11:02:501
27891991817,1cyclictest10889-21apache207:26:541
27891991810,3cyclictest0-21swapper/111:56:521
27891991810,1cyclictest0-21swapper/112:12:211
2789199180,7cyclictest0-21swapper/107:16:551
919421710,0sleep10-21swapper/109:04:491
2789199173,6cyclictest5320-21apache207:46:511
2789199172,1cyclictest0-21swapper/110:25:341
27891991717,0cyclictest0-21swapper/111:27:571
27891991710,4cyclictest0-21swapper/111:42:201
27891991710,3cyclictest0-21swapper/109:37:001
2789199170,4cyclictest0-21swapper/111:46:561
2789199162,7cyclictest0-21swapper/111:16:561
27891991614,1cyclictest31038-21missed_timers08:36:551
27891991610,2cyclictest27888-21cyclictest08:16:521
27891991512,1cyclictest6756-21switchtime08:57:011
27891991510,3cyclictest0-21swapper/108:21:501
2789199144,7cyclictest4542-21ls08:51:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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