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2025-07-12 - 12:41
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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 50 highest latencies:
System rackcslot2.osadl.org (updated Sat Jul 12, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2958826847,17sleep10-21swapper/119:07:051
2929426754,8sleep00-21swapper/019:04:010
252142670,1sleep024405-21/usr/sbin/munin20:18:060
29832993636,0cyclictest0-21swapper/022:26:090
29832993210,21cyclictest0-21swapper/019:23:040
2983399300,0cyclictest0-21swapper/122:48:231
29832993010,14cyclictest0-21swapper/021:42:500
2983399290,22cyclictest5149-21/usr/sbin/munin19:28:021
29832992910,14cyclictest0-21swapper/022:33:230
29832992910,0cyclictest0-21swapper/022:06:070
50382270,1sleep10-21swapper/119:27:461
2983399271,6cyclictest0-21swapper/123:17:571
2983399271,25cyclictest22058-21kworker/1:123:15:171
29833992710,12cyclictest0-21swapper/123:57:561
29832992718,7cyclictest13474-21apache221:11:470
29832992710,9cyclictest0-21swapper/020:58:040
29832992710,4cyclictest0-21swapper/020:03:070
29832992710,0cyclictest0-21swapper/000:24:410
29832992626,0cyclictest0-21swapper/000:29:490
29832992617,7cyclictest13462-21apache223:26:090
2983299260,0cyclictest0-21swapper/023:14:300
29833992525,0cyclictest0-21swapper/121:17:571
29833992524,1cyclictest0-21swapper/123:02:391
29833992521,4cyclictest13462-21apache223:38:511
29833992521,3cyclictest13474-21apache200:27:431
29833992518,5cyclictest13462-21apache222:07:401
29833992510,6cyclictest32530-21ssh00:32:131
29833992510,10cyclictest0-21swapper/122:41:281
29832992525,0cyclictest0-21swapper/020:27:500
29832992519,5cyclictest817-21apache223:00:590
29832992519,4cyclictest13474-21apache222:50:480
29832992510,4cyclictest0-21swapper/023:05:590
29832992510,1cyclictest0-21swapper/023:51:390
29832992510,0cyclictest0-21swapper/022:20:330
2983299250,22cyclictest26388-21/usr/sbin/munin21:28:000
2983299250,0cyclictest0-21swapper/022:10:270
29833992422,1cyclictest0-21swapper/121:45:591
29833992416,4cyclictest29830-21cyclictest23:36:071
29833992410,5cyclictest0-21swapper/123:04:471
29833992410,3cyclictest0-21swapper/121:16:031
2983399240,2cyclictest0-21swapper/121:27:241
2532322410,0sleep00-21swapper/000:22:240
2983399232,20cyclictest0-21swapper/100:33:071
29833992310,8cyclictest0-21swapper/121:12:151
2983399230,4cyclictest0-21swapper/122:31:211
2983399230,2cyclictest0-21swapper/122:15:551
29832992310,12cyclictest0-21swapper/023:18:010
2983399224,4cyclictest0-21swapper/119:17:581
29833992216,4cyclictest13474-21apache222:01:011
29833992214,5cyclictest13474-21apache222:22:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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