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2022-12-05 - 02:15

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 Mon Dec 05, 2022 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22927224310,12sleep022485-1kworker/u3:118:29:060
242179911131,67cyclictest0-21swapper22:38:000
242179910739,52cyclictest1707-21latency_hist21:33:530
242179910629,63cyclictest0-21swapper23:55:560
242179910528,46cyclictest0-21swapper22:01:520
242179910319,25cyclictest24391-21df21:04:310
242179910318,23cyclictest27519-21fw_conntrack22:49:490
242179910317,23cyclictest26076-21df21:09:300
242179910316,24cyclictest22427-21apt-get20:59:110
242179910238,45cyclictest0-21swapper19:29:010
242179910218,36cyclictest11701-21df_inode23:39:420
242179910216,24cyclictest10751-21ssh23:36:030
242179910210,54cyclictest7895-21ssh21:50:590
242179910117,64cyclictest15304-21apt-get22:14:100
242179910116,23cyclictest1800-21apt-get21:34:070
242179910113,66cyclictest30535-21sh22:59:180
242179910112,27cyclictest15905-21ssh23:52:390
242179910018,43cyclictest12204-21df22:04:320
242179910018,22cyclictest28431-21users21:15:350
242179910011,25cyclictest8044-21ssh23:28:530
242179910010,46cyclictest5020-21basename19:44:120
24217999932,51cyclictest0-21swapper23:33:320
24217999918,43cyclictest21167-21irqstats20:54:580
24217999917,60cyclictest25239-21munin-node18:38:540
24217999912,65cyclictest32184-21/usr/sbin/munin23:04:300
24217999911,67cyclictest14220-21ssh22:10:160
24217999817,60cyclictest19420-21fw_conntrack20:49:510
24217999816,60cyclictest5322-21memory23:20:090
24217999814,46cyclictest6498-21ssh21:47:310
24217999813,66cyclictest18089-21/usr/sbin/munin20:45:240
24217999813,24cyclictest14247-21ssh23:47:270
24217999812,25cyclictest19307-21ssh00:03:350
2421799979,27cyclictest25730-21ssh22:44:320
24217999738,22cyclictest11901-21timerwakeupswit20:19:570
24217999731,50cyclictest0-21swapper21:27:070
24217999717,60cyclictest23743-21apt-get22:39:110
24217999715,59cyclictest31397-21fw_conntrack19:09:310
24217999714,65cyclictest3760-21df21:39:330
24217999714,44cyclictest17229-21munin-run20:43:500
24217999710,24cyclictest14342-21fw_conntrack20:34:520
24217999614,23cyclictest3379-21df23:14:350
24217999612,48cyclictest29564-21ssh21:19:480
24217999611,47cyclictest29504-21ssh22:55:240
24217999611,24cyclictest21441-21ssh22:31:160
24217999610,62cyclictest1781-21grep19:24:400
24217999513,63cyclictest19140-21irqstats22:25:000
24217999511,64cyclictest30139-21wc19:03:510
2421799949,25cyclictest26073-21cat18:39:570
2421799949,24cyclictest10175-21unixbench_singl20:09:540
24217999428,49cyclictest0-21swapper19:14:210
24217999416,41cyclictest7923-21fw_conntrack19:59:310
24217999415,43cyclictest17374-21fw_conntrack22:19:500
24217999413,60cyclictest8940-21fw_conntrack21:54:490
24217999413,59cyclictest1220-21latency_hist19:23:480
24217999411,62cyclictest6583-21unixbench_singl19:49:550
24217999410,64cyclictest1487-21wget23:09:190
24217999110,24cyclictest3139-21/usr/sbin/munin19:34:490
2421799909,43cyclictest12212-21basename20:24:110
24217999035,35cyclictest28242-21grep18:49:540
24217999017,24cyclictest10536-21df20:14:160
24217999010,60cyclictest27152-21ps18:44:500
24217998915,26cyclictest6736-21/usr/sbin/munin19:54:460
24217998911,42cyclictest9011-21tr20:04:440
24217998817,54cyclictest0-21swapper20:29:590
24217998815,52cyclictest4375-21irqstats19:39:320
24217998720,22cyclictest30212-21apt-get19:04:060
24217998610,39cyclictest29119-21sed18:54:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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