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2023-02-09 - 01:40

x86 Intel Core i3-2310E @2100 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #8, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 2 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -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 20 highest latencies:
System rack8slot2.osadl.org (updated Wed Feb 08, 2023 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1807899141138,2cyclictest8276-21apt-get08:01:333
1703021270,2sleep30-21swapper/307:06:393
1807599115113,1cyclictest0-21swapper/007:11:280
216022980,2sleep2281ksoftirqd/209:25:342
18078999290,1cyclictest0-21swapper/307:11:283
1757329148,32sleep10-21swapper/107:08:231
78632900,1sleep30-21swapper/312:16:173
1764929048,31sleep00-21swapper/007:09:220
49602890,1sleep20-21swapper/210:41:332
1746028946,32sleep20-21swapper/207:06:552
18076995748,8cyclictest0-21swapper/108:01:331
311122310,0sleep30-21swapper/310:05:153
307002310,0sleep10-21swapper/112:36:391
212182280,2sleep221213-21strings11:26:382
1807799287,1cyclictest586-21snmpd08:11:362
1807699281,26cyclictest0-21swapper/107:16:361
34892240,0sleep30-21swapper/309:01:423
1807799231,21cyclictest0-21swapper/207:51:182
1807599230,2cyclictest564-21runrttasks12:01:310
1807599230,2cyclictest564-21runrttasks12:01:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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