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2025-09-18 - 09:30
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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 Thu Sep 18, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2069126955,9sleep10-21swapper/119:06:251
2062026654,8sleep00-21swapper/019:05:390
13812650,0sleep00-21swapper/022:39:280
20948993712,24cyclictest97750irq/106-eth1-rx22:49:541
20948993712,24cyclictest0-21swapper/123:38:511
20948993636,0cyclictest0-21swapper/121:11:291
20948993510,24cyclictest0-21swapper/123:34:221
20948993434,0cyclictest0-21swapper/123:49:311
2094899340,7cyclictest0-21swapper/121:45:131
188272340,2sleep02094799cyclictest23:51:390
20948993210,21cyclictest0-21swapper/122:10:361
20948993210,21cyclictest0-21swapper/120:42:341
20947993124,6cyclictest19317-21snmpd23:53:090
20948993010,19cyclictest0-21swapper/121:37:251
2094899300,4cyclictest0-21swapper/121:21:211
2094899296,2cyclictest21881-21ssh21:35:391
2094899292,7cyclictest0-21swapper/100:02:551
20947992922,5cyclictest13204-21apache219:17:270
20948992811,16cyclictest0-21swapper/120:17:301
20947992818,7cyclictest636-21nscd21:52:270
20947992810,17cyclictest0-21swapper/023:19:150
36152270,1sleep02094799cyclictest00:16:570
2094899272,6cyclictest32493-21/usr/sbin/munin22:37:321
20948992722,2cyclictest0-21swapper/123:23:161
20948992710,1cyclictest0-21swapper/120:37:331
20948992710,11cyclictest0-21swapper/122:24:271
2094899263,5cyclictest12182-21ls00:27:371
2094899262,6cyclictest0-21swapper/100:22:251
2094899261,2cyclictest0-21swapper/119:41:221
2094899260,6cyclictest0-21swapper/123:27:221
20947992611,6cyclictest0-21swapper/019:42:250
2094799260,4cyclictest0-21swapper/000:04:250
2094899256,5cyclictest30603-21nscd22:05:381
20948992524,0cyclictest0-21swapper/121:56:331
20948992518,3cyclictest16283-21sh23:01:471
20947992523,1cyclictest0-21swapper/022:19:180
2094799251,1cyclictest0-21swapper/023:33:380
2094799250,4cyclictest0-21swapper/021:25:400
2094899242,13cyclictest0-21swapper/121:59:471
20948992418,4cyclictest13204-21apache222:13:201
20948992410,7cyclictest0-21swapper/100:09:161
20948992410,1cyclictest0-21swapper/123:14:401
20948992410,10cyclictest0-21swapper/100:00:551
2094899240,6cyclictest19317-21snmpd22:47:051
2094799240,23cyclictest0-21swapper/020:32:300
2094799240,22cyclictest0-21swapper/000:31:310
20948992320,3cyclictest13204-21apache200:34:371
2094899231,6cyclictest1111-21runrttasks19:29:091
20948992311,8cyclictest15873-21kworker/u4:223:07:271
20948992310,8cyclictest0-21swapper/120:07:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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