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2025-09-15 - 23:13

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 Mon Sep 15, 2025 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12284224152179,96sleep00-21swapper07:09:510
123479916118,119cyclictest2186-21apt-get09:26:280
123479916018,117cyclictest21772-21munin-run08:05:010
123479915817,36cyclictest14295-21munin-run07:20:070
123479915714,118cyclictest12579-21irqstats10:25:420
123479915712,106cyclictest4662-21ls09:36:020
123479915641,21cyclictest17544-21open_files10:55:530
123479915613,35cyclictest23216-21sort08:11:000
123479915518,112cyclictest24182-21munin-run08:20:020
123479915516,25cyclictest18515-21users07:41:060
123479915512,30cyclictest32151-21grep09:06:040
123479915442,91cyclictest26208-21ntp_states08:30:510
123479915419,26cyclictest22113-21memory08:05:430
123479915419,107cyclictest32067-21apt-get12:30:200
123479915417,114cyclictest29313-21munin-run12:15:010
123479915416,96cyclictest8568-21grep10:00:570
123479915416,96cyclictest20570-21ntp_states07:55:550
123479915416,114cyclictest12762-21ntp_states07:10:530
123479915414,115cyclictest29311-21apt-get12:16:590
123479915410,118cyclictest28938-21grep08:46:000
123479915327,107cyclictest26979-21ntp_kernel_pll_08:35:490
123479915315,114cyclictest2821-21snmpd07:31:050
123479915313,116cyclictest9377-21find10:06:000
123479915313,115cyclictest14439-21apt-get07:20:240
123479915225,21cyclictest0-21swapper11:25:370
123479915225,104cyclictest112-21systemd-journal07:52:160
123479915220,28cyclictest30728-21apt-get09:00:220
123479915217,23cyclictest10916-21irqstats10:16:160
123479915216,113cyclictest15859-21memory10:45:450
123479915210,26cyclictest26065-21/usr/sbin/munin11:50:470
12347991519,117cyclictest2821-21snmpd10:30:560
123479915117,111cyclictest30608-21munin-run09:00:030
123479915115,21cyclictest27568-21munin-run12:00:010
123479915113,25cyclictest18034-21/usr/sbin/munin11:01:010
123479915113,115cyclictest30479-21apt-get12:20:150
123479915112,115cyclictest10441-21munin-run10:15:010
123479915111,23cyclictest31980-21sort12:30:020
123479915019,23cyclictest22964-21df_inode11:30:300
123479915015,23cyclictest18939-21df11:05:270
123479915015,112cyclictest19348-21munin-run07:50:020
123479915014,23cyclictest16584-21awk10:50:360
123479915012,114cyclictest24355-21munin-run11:40:020
123479915012,114cyclictest15446-21apt07:25:150
12347991499,118cyclictest12312-21grep10:25:030
12347991499,114cyclictest32527-21grep09:10:420
123479914928,21cyclictest5475-21grep09:41:010
123479914917,109cyclictest15515-21munin-run10:45:010
123479914913,24cyclictest8033-21munin-run10:00:020
123479914912,24cyclictest24990-21modprobe08:25:000
123479914910,25cyclictest21954-21modprobe11:25:000
123479914818,105cyclictest25380-21df_inode11:45:290
123479914814,34cyclictest25757-21users08:26:170
123479914813,111cyclictest953-21awk09:15:490
123479914813,111cyclictest17737-21munin-run07:40:020
123479914737,20cyclictest1989-21swap09:21:000
123479914721,106cyclictest3323-21sshd09:30:170
123479914715,105cyclictest651-21memory12:35:460
123479914713,23cyclictest6965-21awk09:50:560
123479914712,23cyclictest27578-21cstates08:40:240
123479914711,49cyclictest24791-21ntp_states11:40:530
123479914711,26cyclictest27678-21kworker/u2:512:00:060
123479914619,25cyclictest29211-21df08:50:300
123479914619,20cyclictest5837-21df09:45:270
123479914612,28cyclictest14417-21/usr/sbin/munin10:35:560
123479914519,23cyclictest19632-21apt-get11:10:190
123479914421,98cyclictest27929-21diskstats12:05:280
123479914317,20cyclictest20544-21diskstats11:15:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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