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2023-06-09 - 13:15

x86 Intel Core i5-6440EQ @2700 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #5, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack5slot2.osadl.org (updated Fri Jun 09, 2023 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
192362216200,11sleep00-21swapper/019:09:350
170472207191,11sleep30-21swapper/319:05:083
191702204188,11sleep10-21swapper/119:08:441
190262173156,12sleep20-21swapper/219:06:522
191512470,0sleep00-21swapper/022:10:020
215162450,0sleep10-21swapper/123:46:471
65802430,0sleep20-21swapper/221:43:062
165762430,0sleep20-21swapper/221:30:132
13412390,0sleep30-21swapper/300:32:533
1946299100,6cyclictest4709-21ssh22:00:310
1946299100,6cyclictest31789-21ssh23:15:010
1946299100,6cyclictest18639-21ssh22:47:350
1946299100,6cyclictest14925-21ssh22:06:550
194629990,8cyclictest20120-21apt-get20:15:160
194629990,8cyclictest19068-21apt-get00:05:200
194629990,7cyclictest19682-21ssh23:26:200
194629990,6cyclictest9463-21ssh22:42:040
194629990,6cyclictest8289-21ssh23:58:410
194629990,6cyclictest4841-21chrt19:42:570
194629990,6cyclictest4269-21ssh21:22:230
194629990,6cyclictest3812-21ssh21:40:550
194629990,6cyclictest32714-21taskset19:35:160
194629990,6cyclictest29743-21ssh00:30:240
194629990,6cyclictest27190-21ssh23:11:350
194629990,6cyclictest25241-21ssh00:27:480
194629990,6cyclictest24320-21python19:15:290
194629990,6cyclictest23734-21ssh21:15:180
194629990,6cyclictest23616-21ssh21:34:170
194629990,6cyclictest22441-21ssh23:47:290
194629990,6cyclictest2155-21ssh22:56:470
194629990,6cyclictest20646-21ssh21:50:510
194629990,6cyclictest19514-21ssh23:07:100
194629990,6cyclictest17927-21ssh21:10:570
194629990,6cyclictest11848-21ssh23:21:440
194629990,6cyclictest10531-21ssh00:38:290
194629990,5cyclictest2173-21chrt20:43:180
194629990,5cyclictest14282-21rm21:47:290
194629990,5cyclictest0-21swapper/022:52:270
194629990,0cyclictest13723-21ssh00:01:210
19441290,0sleep30-21swapper/321:12:073
194629980,7cyclictest4843-21munin-run22:40:010
194629980,7cyclictest3900-21ssh22:20:160
194629980,7cyclictest25929-21perl21:35:220
194629980,7cyclictest1595-21idleruntime-cro23:54:590
194629980,7cyclictest15165-21apt-get20:05:170
194629980,7cyclictest13174-21ntp_states00:20:220
194629980,6cyclictest6546-21python20:50:260
194629980,5cyclictest9697-21taskset19:51:520
194629980,5cyclictest9454-21taskset20:56:400
194629980,5cyclictest9421-21/usr/sbin/munin21:25:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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