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2022-08-16 - 06:06

ARM Freescale i.MX6UL @528 MHz, Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 376 highest latencies:
System rack5slot7.osadl.org (updated Tue Aug 16, 2022 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1866225840,11sleep025178-1kworker/u3:218:35:350
23189910432,38cyclictest28175-21cron00:09:160
23189910335,50cyclictest0-21swapper21:24:080
23189910332,55cyclictest0-21swapper23:57:340
23189910331,55cyclictest0-21swapper22:43:390
23189910317,65cyclictest22536-21munin-run20:29:170
23189910316,68cyclictest11970-21irqstats21:40:320
23189910315,66cyclictest2800-21ssh21:11:220
23189910315,65cyclictest6563-21aten_r5power_po18:59:400
23189910314,67cyclictest16438-21/usr/sbin/munin21:54:580
23189910218,62cyclictest27757-21apt-get20:49:380
23189910214,50cyclictest5727-21entropy23:00:170
23189910119,23cyclictest21947-21memory22:10:390
23189910119,21cyclictest26721-21fw_conntrack22:25:180
23189910118,43cyclictest29667-21df20:55:030
23189910116,63cyclictest29999-21df_inode22:35:170
23189910112,24cyclictest28919-21ssh22:31:050
23189910015,67cyclictest26484-21fw_conntrack20:45:210
23189910015,45cyclictest7396-21fw_conntrack23:05:180
23189910013,51cyclictest22744-21ssh23:51:050
23189910010,28cyclictest804-21ssh22:45:210
23189910010,26cyclictest4546-21ssh21:17:100
2318999916,45cyclictest25075-21fw_conntrack22:20:160
2318999843,22cyclictest4390-21processes22:55:490
2318999831,50cyclictest0-21swapper21:02:520
2318999817,61cyclictest10621-21ssh23:15:050
2318999816,61cyclictest1286-21ssh21:07:140
2318999816,22cyclictest20170-21irqstats22:05:250
2318999815,44cyclictest24745-21ssh20:40:050
2318999813,65cyclictest6938-21df_abs21:25:090
2318999813,65cyclictest2839-21wc22:50:530
2318999813,50cyclictest14261-21ssh21:47:010
2318999812,48cyclictest15358-21ssh23:29:420
2318999812,46cyclictest14916-21basename21:49:500
2318999811,48cyclictest11391-21ssh21:39:150
2318999810,28cyclictest20607-21/usr/sbin/munin23:45:240
2318999718,59cyclictest23328-21df22:15:020
2318999717,62cyclictest12177-21fw_conntrack19:29:580
2318999716,60cyclictest23814-21df_inode20:34:520
2318999715,20cyclictest14007-21irqstats19:40:080
2318999712,61cyclictest16949-21ssh23:34:280
2318999710,50cyclictest26118-21ssh00:01:430
2318999710,25cyclictest8749-21awk19:10:150
2318999612,63cyclictest14171-21ssh23:25:330
2318999516,20cyclictest8723-21irqstats21:30:280
2318999515,61cyclictest4604-21munin-run18:49:200
2318999512,63cyclictest10824-21grep19:20:270
2318999512,53cyclictest0-21swapper23:41:480
2318999512,24cyclictest7612-21sed19:04:510
2318999511,48cyclictest8836-21ssh23:09:560
2318999316,43cyclictest11772-21munin-run19:29:160
2318999313,60cyclictest14688-21cpu19:44:410
2318999313,58cyclictest11992-21apt-get23:19:410
2318999313,43cyclictest18532-21irqstats22:00:250
2318999311,62cyclictest5111-21sort18:50:060
2318999310,23cyclictest20877-21tr20:19:360
2318999231,44cyclictest0-21swapper20:30:040
2318999120,48cyclictest3211-21munin-run18:44:190
2318999111,59cyclictest5610-21/usr/sbin/munin18:54:430
2318999110,60cyclictest19995-21basename20:14:390
2318999019,22cyclictest19823-21users20:10:310
2318999013,27cyclictest9933-21head19:15:260
2318999012,62cyclictest17171-21cat19:59:180
231899889,61cyclictest13505-21grep19:35:280
2318998816,26cyclictest15480-21/usr/sbin/munin19:49:580
2318998811,28cyclictest18792-21/usr/sbin/munin20:05:220
2318998720,43cyclictest17667-21memory20:00:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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