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2022-12-05 - 01:15

ARM Freescale i.MX6 Quad @996 MHz, Linux 5.16.2-rt19 (Profile)

Latency plot of system in rack #b, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 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 rackbslot7 (updated Sun Dec 04, 2022 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27288216530,22sleep30-21swapper/307:03:063
2817899987,22cyclictest28041-21latency_hist07:07:280
2817899973,16cyclictest3015-21taskset07:27:500
267042957,17sleep10-21swapper/107:02:391
2817899933,15cyclictest17858-21fschecks_time08:12:470
2817899929,12cyclictest0-21swapper/007:47:270
2817899922,18cyclictest19468-21chrt11:37:270
2817899914,19cyclictest396-21runrttasks09:05:110
2817899913,14cyclictest14290-21/usr/sbin/munin09:43:000
2817899903,19cyclictest2550-21cut07:27:240
2817899903,11cyclictest30171-21kernelversion07:12:340
2817899894,18cyclictest26682-21grep08:38:000
2817899893,24cyclictest6116-21apt-key10:57:250
2817899893,18cyclictest11337-21grep09:32:470
2817899893,17cyclictest13320-21grep09:37:580
2817899883,16cyclictest396-21runrttasks10:59:030
2817899883,14cyclictest9721-21fschecks_time07:48:080
28178998810,71cyclictest0-21swapper/008:47:260
2817899874,19cyclictest23173-21fschecks_count11:47:590
2817899874,19cyclictest23173-21fschecks_count11:47:590
28178998713,10cyclictest0-21swapper/009:12:450
2817899864,17cyclictest30278-21apt08:52:240
2817899864,17cyclictest30278-21apt08:52:240
2817899863,21cyclictest14431-21munin-run11:22:240
2817899863,21cyclictest14431-21munin-run11:22:240
2817899863,20cyclictest9307-21latency_hist09:27:270
2817899863,18cyclictest396-21runrttasks10:02:370
2817899863,16cyclictest16788-21timerwakeupswit09:48:030
2817899862,21cyclictest2889-21grep12:23:130
2817899854,13cyclictest31896-21apt08:57:240
2817899853,21cyclictest29704-21grep07:12:250
2817899853,21cyclictest16920-21grep08:08:130
2817899853,18cyclictest1149-21apt-get10:42:330
2817899853,18cyclictest11250-21latency_hist11:12:260
2817899853,17cyclictest29137-21cron12:07:240
2817899853,15cyclictest26744-21grep10:18:040
28178998513,16cyclictest274-21systemd-journal08:37:240
28178998513,16cyclictest274-21systemd-journal08:37:240
2677228512,35sleep20-21swapper/207:02:452
2817899846,13cyclictest0-21swapper/009:02:240
2817899846,13cyclictest0-21swapper/009:02:240
2817899844,17cyclictest30356-21grep12:07:580
2817899843,20cyclictest7041-21grep07:38:120
2817899843,16cyclictest31190-21wc10:32:550
2817899843,15cyclictest25882-21modprobe11:57:230
2817899843,13cyclictest3790-21mailstats10:48:020
2817899843,13cyclictest3790-21mailstats10:48:020
28185998332,14cyclictest141rcu_preempt12:17:471
2817899835,18cyclictest396-21runrttasks09:57:270
2817899835,18cyclictest396-21runrttasks09:57:270
2817899834,17cyclictest4635-21tune2fs07:32:450
2817899833,21cyclictest3713-21cut12:27:510
2817899833,21cyclictest3713-21cut12:27:510
2817899833,20cyclictest15674-21apt-key08:07:250
2817899833,19cyclictest27670-21fschecks_time10:22:500
2817899833,19cyclictest26284-21cstates11:57:420
2817899833,19cyclictest10791-21cron09:32:240
2817899832,19cyclictest32392-21sendmail12:17:240
2817899832,19cyclictest32392-21sendmail12:17:240
2817899824,20cyclictest11348-21/usr/sbin/munin11:12:510
2817899824,15cyclictest725-21unixbench_multi10:38:000
2817899824,15cyclictest725-21unixbench_multi10:38:000
2817899823,19cyclictest25023-21timerwakeupswit10:13:330
2817899823,18cyclictest21229-21/usr/sbin/munin11:42:590
2817899823,18cyclictest21229-21/usr/sbin/munin11:42:590
2817899823,16cyclictest4439-21grep09:12:260
2817899822,18cyclictest1-21systemd11:07:250
28178998153,18cyclictest6485-21cron12:37:230
2817899813,21cyclictest19201-21/usr/sbin/munin09:57:580
2817899813,16cyclictest20600-21idleruntime-cro08:22:240
2817899812,24cyclictest0-21swapper/007:52:540
2817899812,18cyclictest478-21grep12:17:470
2817899803,20cyclictest541-21grep07:18:010
2817899803,19cyclictest29240-21sort10:27:540
2817899803,19cyclictest29240-21sort10:27:540
2817899803,19cyclictest20568-21unixbench_multi11:38:260
2817899803,17cyclictest22692-21sort08:27:480
2817899803,16cyclictest14674-21/usr/sbin/munin11:22:570
2817899803,16cyclictest12864-21sort07:57:470
2817899802,21cyclictest16724-21cat11:27:530
2817899802,20cyclictest7205-21unixbench_singl09:18:030
28194997943,12cyclictest141rcu_preempt07:49:212
28185997942,19cyclictest141rcu_preempt07:32:411
2817899794,19cyclictest21031-21fschecks_count08:22:460
2817899793,11cyclictest23181-21cat10:08:130
28203997658,11cyclictest32458-21fschecks_count10:37:463
28203997658,11cyclictest32458-21fschecks_count10:37:463
28203997552,14cyclictest12412-21idleruntime-cro07:57:243
28203997527,20cyclictest0-21swapper/311:33:583
28203997423,22cyclictest22648-21fschecks_count10:07:563
28203997423,21cyclictest25367-21taskset08:37:013
28203997423,21cyclictest25367-21taskset08:37:013
28203997420,22cyclictest16991-21/usr/sbin/munin11:28:003
28185997422,12cyclictest0-21swapper/110:30:381
28185997422,12cyclictest0-21swapper/110:30:381
28185997421,30cyclictest0-21swapper/109:26:361
28185997351,14cyclictest0-21swapper/112:37:231
28185997327,20cyclictest0-21swapper/109:32:471
28203997251,13cyclictest1092-21idleruntime-cro09:02:243
28203997251,13cyclictest1092-21idleruntime-cro09:02:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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