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2023-02-06 - 14:05

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 Feb 06, 2023 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
673503180,0irq/11-sym53c8x30935-21cron07:04:350
673502900,0irq/11-sym53c8x31946-21irqstats11:54:560
673502870,0irq/11-sym53c8x18433-21mailstats08:34:470
673502830,0irq/11-sym53c8x2573-21sh09:54:410
673502820,0irq/11-sym53c8x6396-21nfs_client10:11:270
673502810,0irq/11-sym53c8x4699-21ssh10:05:190
673502810,0irq/11-sym53c8x3412-21apt-get10:00:210
673502810,0irq/11-sym53c8x32314-21ntpq07:10:010
673502800,0irq/11-sym53c8x22967-21which08:54:570
673502790,0irq/11-sym53c8x18982-21munin-node11:01:490
673502760,0irq/11-sym53c8x2619-21runrttasks12:34:430
2017502750,0irq/15-NE200012320-21munin-node10:36:240
673502690,0irq/11-sym53c8x11197-21ssh10:31:480
673502670,0irq/11-sym53c8x20182-21sendmail_mailqu08:40:550
673502660,0irq/11-sym53c8x27543-21aten_r3power_vo11:35:580
673502660,0irq/11-sym53c8x2350-21snmpd11:24:380
673502650,0irq/11-sym53c8x2619-21runrttasks08:00:070
673502640,0irq/11-sym53c8x537-21sendmail_mailst12:00:040
673502630,0irq/11-sym53c8x4401-21mailstats12:14:540
673502630,0irq/11-sym53c8x3135-21chrt12:09:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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