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2023-06-09 - 09:38

x86 Intel Core i5-8265UE @1600 MHz, Linux 5.10.41-rt42 (Profile)

Latency plot of system in rack #a, slot #8
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 rackaslot8.osadl.org (updated Fri Jun 09, 2023 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132892324289,23sleep10-21swapper/119:07:131
134702295259,23sleep30-21swapper/319:09:333
132932289262,16sleep00-21swapper/019:07:160
131602279245,21sleep20-21swapper/219:05:462
302552760,0sleep30-21swapper/320:55:273
303562690,0sleep00-21swapper/021:27:590
75802640,0sleep30-21swapper/322:41:513
101902570,0sleep20-21swapper/200:15:392
278772560,0sleep20-21swapper/221:25:452
198012560,1sleep10-21swapper/122:50:261
305252550,0sleep30-21swapper/319:45:203
161382550,0sleep30-21swapper/321:18:163
295932240,0sleep20-21swapper/222:57:242
88252230,0sleep10-21swapper/122:43:011
128772230,0sleep00-21swapper/021:15:300
164802180,0sleep20-21swapper/221:18:362
10572170,0sleep10-21swapper/123:45:241
204462160,0sleep00-21swapper/023:35:380
112802140,0sleep10-21swapper/123:30:141
292232130,0sleep20-21swapper/219:40:272
163692120,0sleep20-21swapper/223:33:322
1361499108,2cyclictest28-21ksoftirqd/220:15:002
1361499108,2cyclictest28-21ksoftirqd/219:15:002
1361499104,4cyclictest28-21ksoftirqd/221:56:462
19858290,1sleep1221ksoftirqd/123:58:521
136189994,3cyclictest25948-21systemd-journal21:53:083
136189994,3cyclictest25948-21systemd-journal19:51:443
136149998,1cyclictest28-21ksoftirqd/223:25:002
136149998,1cyclictest28-21ksoftirqd/222:25:012
136149997,2cyclictest28-21ksoftirqd/223:25:012
136149997,2cyclictest28-21ksoftirqd/222:05:012
136149994,3cyclictest25948-21systemd-journal20:35:072
136149993,4cyclictest28-21ksoftirqd/222:20:272
136149992,5cyclictest28-21ksoftirqd/222:40:272
136149992,5cyclictest28-21ksoftirqd/222:32:142
136149992,4cyclictest28-21ksoftirqd/222:52:062
136149991,4cyclictest28-21ksoftirqd/223:10:472
136149990,6cyclictest199942tail20:30:242
136069996,2cyclictest12-21ksoftirqd/020:20:000
136069994,4cyclictest25948-21systemd-journal23:33:400
136189986,1cyclictest29854-21cat22:35:183
136189985,2cyclictest508-21dbus-daemon20:42:383
136189984,3cyclictest508-21dbus-daemon00:28:433
136189983,3cyclictest25948-21systemd-journal23:38:393
136189983,3cyclictest25948-21systemd-journal22:00:023
136189983,3cyclictest25948-21systemd-journal20:00:553
136149987,1cyclictest28-21ksoftirqd/219:40:012
136149984,3cyclictest508-21dbus-daemon21:09:592
136149983,4cyclictest28-21ksoftirqd/221:47:152
136149983,3cyclictest25948-21systemd-journal19:25:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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