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2025-09-14 - 02:01

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 376 highest latencies:
System rack5slot7s.osadl.org (updated Sat Sep 13, 2025 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7070224252180,85sleep00-21swapper07:08:420
72619916215,122cyclictest18641-21apt-get11:31:570
72619915934,23cyclictest10830-21ls07:30:030
7261991589,125cyclictest566-21cut09:42:030
72619915816,120cyclictest15036-21diskstats07:55:310
72619915715,21cyclictest19566-21wc08:20:540
72619915616,117cyclictest23902-21apt-get08:51:060
72619915615,118cyclictest9233-21df_inode10:35:300
72619915615,116cyclictest30125-21wc09:25:450
72619915612,119cyclictest27549-21df09:10:300
72619915515,116cyclictest32170-21apt-get09:40:030
72619915514,115cyclictest17887-21munin-run11:30:050
72619915511,121cyclictest23425-21uname12:01:130
72619915511,120cyclictest14074-21df_inode11:05:300
72619915510,120cyclictest12983-21grep10:56:070
72619915420,27cyclictest8603-21diskstats07:15:520
72619915417,38cyclictest23904-21munin-run08:50:050
72619915417,112cyclictest20104-21df_inode08:25:320
72619915416,113cyclictest25730-21apt09:00:020
72619915415,25cyclictest1561-21apt-get09:51:590
72619915414,42cyclictest21706-21/usr/sbin/munin11:50:470
72619915411,118cyclictest22865-21sed11:56:040
72619915319,107cyclictest29080-21apt-get09:20:190
72619915317,24cyclictest24964-21df12:10:270
72619915317,112cyclictest9431-21df_inode07:20:310
72619915311,116cyclictest2821-21snmpd10:35:040
72619915235,20cyclictest21060-21find11:45:570
72619915217,24cyclictest4415-21df_inode10:05:310
72619915216,111cyclictest14786-21users07:51:060
72619915211,118cyclictest8016-21/usr/sbin/munin07:11:070
7261991517,121cyclictest30784-21diskstats09:30:320
72619915142,88cyclictest5378-21/usr/sbin/munin10:10:470
72619915134,96cyclictest26012-21/usr/sbin/munin12:15:550
72619915121,28cyclictest978-21diskstats09:45:430
72619915116,105cyclictest13334-21apt-get07:45:190
72619915115,113cyclictest29587-21apt12:40:010
72619915114,114cyclictest17089-21apt11:25:010
72619915111,117cyclictest2821-21snmpd10:20:000
72619915110,41cyclictest12328-21sed07:36:030
72619915016,23cyclictest15626-21apt-get08:01:270
72619915016,109cyclictest3345-21users09:56:120
72619915015,25cyclictest15667-21df_inode11:15:320
72619915014,24cyclictest13299-21/usr/sbin/munin11:00:410
72619915014,23cyclictest22524-21diskstats08:40:340
72619915013,113cyclictest13234-21munin-run07:45:010
72619915011,27cyclictest28835-21sort12:35:040
7261991498,119cyclictest3687-21/usr/sbin/munin10:00:400
72619914915,110cyclictest2821-21snmpd08:06:320
72619914914,94cyclictest11286-21wc07:30:560
72619914818,107cyclictest14873-21diskstats11:10:320
72619914814,25cyclictest25953-21df09:00:300
72619914810,100cyclictest28993-21latency_hist09:20:050
7261991479,117cyclictest27165-21awk12:21:080
72619914717,26cyclictest9954-21apt-get10:40:210
72619914716,26cyclictest11547-21/usr/sbin/munin10:51:020
72619914714,25cyclictest24182-21df_inode12:05:380
72619914714,23cyclictest11308-21/usr/sbin/munin10:46:020
72619914712,110cyclictest17821-21grep08:10:460
72619914615,23cyclictest19256-21memory11:35:510
72619914612,25cyclictest27080-21sendmail_mailqu09:05:560
72619914612,25cyclictest18881-21ls08:16:010
72619914520,98cyclictest21590-21apt-get08:35:210
72619914519,27cyclictest7533-21apt-get10:25:200
72619914512,110cyclictest6839-21df_inode10:20:320
72619914512,110cyclictest20901-21sshd08:30:310
72619914511,37cyclictest27493-21kernelversion12:25:410
72619914413,27cyclictest20250-21/usr/sbin/munin11:40:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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