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2023-06-05 - 02:13

x86 Intel Pentium @133 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #3, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l25000000 -m -n -a0 -t1 -p99 -i800 -h1000 -q
Total number of samples: 25 million
Resolution of latency scale: reduced 
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot5.osadl.org (updated Mon Jun 05, 2023 00:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
677503140,0irq/11-sym53c8x21856-21cron19:05:010
2300899271199,0cyclictest841-21timerwakeupswit22:16:340
2300899267187,0cyclictest25185-21kernelversion21:41:120
2300899262176,0cyclictest2461-21cron22:00:570
2300899250153,0cyclictest32090-21runrttasks19:47:090
2300899250141,0cyclictest26545-21runrttasks19:23:080
2300899246142,0cyclictest30949-21needreboot00:31:160
2300899245146,0cyclictest798-21runrttasks19:53:040
2300899244150,0cyclictest2624-21runrttasks21:07:500
2300899243149,0cyclictest27752-21runrttasks19:29:390
2300899242152,0cyclictest2624-21runrttasks22:55:490
2300899242151,0cyclictest14838-21apt-get23:20:400
2300899242146,0cyclictest16519-21runrttasks21:02:210
2300899241150,0cyclictest24565-21mailstats19:15:400
2300899239143,0cyclictest20131-21runrttasks23:43:460
2300899238160,0cyclictest31723-21awk00:35:470
2300899237151,0cyclictest6740-21munin-run22:44:580
2300899236160,0cyclictest8176-21grep20:25:560
2300899236151,0cyclictest26658-21runrttasks21:47:330
230089923571,0cyclictest29044-21sh21:59:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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