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2022-07-03 - 19:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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ARM Freescale i.MX6UL @528 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50500000 -m -n -a0 -t1 -p99 -i396 -h400 -q
Total number of samples: 50.5 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 rack5slot7s.osadl.org (updated Sun Jul 03, 2022 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20589224492214,88sleep00-21swapper07:07:440
208899916312,126cyclictest24377-21sed07:26:090
208899916112,106cyclictest855-21modprobe11:40:010
208899916010,126cyclictest30706-21apt-get11:27:030
208899916010,125cyclictest31052-21grep08:06:100
208899915917,100cyclictest3477-21munin-run08:40:040
208899915914,24cyclictest28369-21sshd11:10:080
208899915815,119cyclictest19401-21apt10:15:010
208899915814,119cyclictest28592-21apt-get07:55:340
208899915718,112cyclictest32004-21apt-get08:15:210
208899915713,119cyclictest23445-21systemctl10:40:030
208899915611,103cyclictest13554-21latency_hist09:40:020
20889991559,25cyclictest25041-21sshd10:48:160
208899915530,87cyclictest0-21swapper10:51:070
208899915519,22cyclictest4293-21apt-get08:45:470
208899915516,23cyclictest6903-21munin-run09:00:020
208899915515,26cyclictest26980-21apt-get07:45:220
208899915514,23cyclictest14375-21apt-get09:45:460
208899915514,21cyclictest1794-21apt-get11:45:200
208899915513,119cyclictest9238-21/usr/sbin/munin12:30:520
208899915511,118cyclictest17540-21sshd10:01:070
208899915418,94cyclictest10365-21diskstats09:20:430
208899915417,112cyclictest21248-21df_inode10:25:380
208899915413,25cyclictest31201-21/usr/sbin/munin08:10:110
208899915413,24cyclictest9935-21apt-get12:36:430
208899915413,102cyclictest25978-21grep07:36:100
208899915410,119cyclictest18538-21sed10:06:120
208899915327,106cyclictest15490-21apt-get09:50:240
208899915313,38cyclictest20263-21cat10:20:050
208899915313,118cyclictest28447-21awk07:51:150
208899915313,117cyclictest8435-21date12:25:080
208899915310,117cyclictest3734-21if_err_eth011:55:460
208899915272,56cyclictest26471-21ntpq07:40:560
208899915244,87cyclictest7246-21latency09:00:490
208899915234,97cyclictest17065-21latency_hist10:00:050
208899915216,110cyclictest13682-21apt-get09:40:270
208899915215,26cyclictest2796-21/usr/sbin/munin11:50:530
208899915214,96cyclictest23375-21grep07:21:030
208899915129,99cyclictest0-21swapper12:11:070
208899915123,24cyclictest22293-21/usr/sbin/munin07:16:020
208899915112,23cyclictest1605-21wc08:26:040
208899915017,28cyclictest29286-21df_inode11:15:390
208899915012,38cyclictest1687-21munin-run11:45:020
208899915012,25cyclictest5627-21sort08:50:560
208899915011,27cyclictest7822-21/usr/sbin/munin09:05:450
208899914918,108cyclictest6924-21diskstats12:15:430
208899914911,98cyclictest11599-21grep09:26:130
208899914910,114cyclictest22162-21grep10:30:510
20889991489,23cyclictest4644-21sort12:00:500
20889991489,116cyclictest14668-21snmpd11:00:480
208899914816,25cyclictest20451-21diskstats10:20:420
208899914815,106cyclictest12634-21latency_hist09:35:090
208899914814,112cyclictest30115-21df_inode11:20:360
208899914813,27cyclictest1017-21head08:21:110
208899914812,41cyclictest26059-21df10:55:360
208899914812,27cyclictest8786-21/usr/sbin/munin12:26:030
208899914811,22cyclictest21698-21munin-node07:15:100
208899914720,27cyclictest5318-21df12:05:370
208899914717,25cyclictest23668-21df_inode10:40:350
208899914711,24cyclictest29075-1kworker/u3:508:00:160
208899914711,110cyclictest25195-21sed07:31:110
208899914710,39cyclictest32414-21grep11:31:200
208899914618,25cyclictest2214-21memory08:30:510
208899914615,25cyclictest28552-21irqstats11:10:460
208899914517,23cyclictest8731-21diskstats09:10:410
208899914516,24cyclictest9518-21df09:15:330
208899914511,23cyclictest4392-21cat08:45:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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