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2022-08-20 - 04:10

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 100, highest latencies:
System rack5slot7.osadl.org (updated Sat Aug 20, 2022 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6579224252189,183sleep00-21swapper18:37:340
67809914275,48cyclictest5243-21ssh21:07:370
67809914072,48cyclictest28798-21/usr/sbin/munin22:20:590
67809913477,32cyclictest12025-21ssh23:05:410
67809913476,37cyclictest17197-21/usr/sbin/munin21:44:150
67809913378,33cyclictest8786-21ssh21:18:550
67809913277,35cyclictest4989-21rm22:45:040
67809913176,35cyclictest21681-21grep20:00:110
67809913171,43cyclictest14126-21ssh23:12:300
67809912974,32cyclictest1690-21/usr/sbin/munin22:35:000
67809912874,31cyclictest7283-21memory18:39:550
67809912775,31cyclictest9098-21timerwakeupswit18:50:190
67809912772,32cyclictest29213-21df23:59:460
67809912671,34cyclictest15246-21sh21:38:080
67809912575,28cyclictest13004-21cpu19:14:290
67809912573,30cyclictest31607-21ssh22:27:040
67809912572,33cyclictest2800-21ssh21:00:140
67809912572,32cyclictest9862-21ssh22:59:500
67809912572,32cyclictest7190-21ssh22:50:520
67809912473,32cyclictest23832-21apt-get22:04:230
67809912473,30cyclictest30891-21fw_conntrack00:05:070
67809912469,33cyclictest22193-21sh21:59:250
67809912375,28cyclictest12200-21latency_hist21:29:110
67809912373,30cyclictest28580-21sshd22:18:360
67809912371,31cyclictest373-21sh20:53:090
67809912369,33cyclictest20781-21head19:55:120
67809912270,30cyclictest14694-21snmpd22:42:400
67809912075,25cyclictest8217-21ssh22:54:510
67809912068,30cyclictest27269-21modprobe23:54:030
67809911976,25cyclictest10399-21df18:59:330
67809911969,30cyclictest14381-21/usr/sbin/munin19:20:150
67809911969,29cyclictest32660-21grep22:30:250
67809911965,35cyclictest12522-21df21:29:490
67809911965,33cyclictest30338-21memory20:45:240
67809911870,30cyclictest28604-21ssh23:57:380
67809911770,25cyclictest25935-21irqstats22:10:140
67809911673,25cyclictest8060-21if_eth018:44:280
67809911568,30cyclictest25644-21kworker/u2:120:57:570
67809911567,26cyclictest20975-21irqstats21:55:180
67809911563,32cyclictest16684-21ssh21:41:580
67809911465,30cyclictest1268-21cron23:49:020
67809911367,30cyclictest18879-21apt-get21:49:250
67809911260,31cyclictest19113-21ssh23:27:370
67809911167,29cyclictest6576-21ssh21:10:500
67809911068,23cyclictest22966-21df20:09:340
67809910863,24cyclictest24946-21memory20:19:570
67809910861,27cyclictest21663-21memory23:35:250
67809910661,26cyclictest26615-21df_inode20:29:410
67809910659,26cyclictest9515-21df18:54:350
67809910634,53cyclictest0-21swapper23:32:210
67809910461,29cyclictest15140-1kworker/u3:323:21:330
67809910460,24cyclictest25725-21fw_conntrack20:24:440
67809910365,21cyclictest21849-21apt-get20:04:160
67809910358,27cyclictest0-21swapper23:41:410
67809910156,26cyclictest0-21swapper19:44:470
67809910117,60cyclictest9387-21irqstats21:20:150
67809910117,59cyclictest28785-21ssh20:40:370
67809910063,22cyclictest14573-21ssh23:14:330
6780999953,25cyclictest0-21swapper19:04:540
6780999746,31cyclictest0-21swapper19:49:310
6780999555,22cyclictest23654-21apt-get20:14:170
6780999512,60cyclictest16181-21swap19:30:070
6780999511,62cyclictest16475-21/usr/sbin/munin19:35:040
6780999510,48cyclictest28089-21latency_hist20:39:100
6780999415,55cyclictest18007-21cat19:40:090
6780999311,58cyclictest12026-21grep19:09:260
6780999040,30cyclictest0-21swapper19:28:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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