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2025-11-15 - 15:41

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 highest latencies:
System rack5slot7s.osadl.org (updated Sat Nov 15, 2025 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12704224202177,97sleep00-21swapper07:06:080
131869916313,24cyclictest15404-21awk10:36:010
131869916244,24cyclictest10437-21unixbench_singl10:06:040
131869916116,121cyclictest2420-21memory12:35:480
131869916110,122cyclictest30679-21apt-get08:56:020
13186991608,127cyclictest30340-21grep12:05:590
131869916012,47cyclictest11262-21sendmail_mailqu10:11:480
131869915939,23cyclictest6123-21ntp_offset09:40:540
131869915812,121cyclictest19273-21sort07:45:050
131869915810,124cyclictest3679-21sshd09:25:480
131869915736,24cyclictest21577-21apt-key11:15:100
131869915715,118cyclictest8097-21apt09:55:020
131869915713,119cyclictest30910-21awk12:10:510
131869915617,115cyclictest16386-21apt-get10:46:140
131869915519,114cyclictest25056-21munin-run08:20:020
131869915518,26cyclictest29708-21modprobe12:05:000
131869915516,25cyclictest5687-21apt09:40:010
131869915516,25cyclictest15357-21df_inode07:20:320
131869915511,121cyclictest31863-21snmpd11:51:030
131869915315,23cyclictest13693-21zcat10:25:590
131869915311,27cyclictest865-21sshd12:25:480
131869915224,104cyclictest0-21swapper08:40:060
131869915216,25cyclictest23214-21apt-get08:11:100
131869915215,26cyclictest8477-21/usr/sbin/munin09:55:480
131869915214,115cyclictest31863-21snmpd07:25:560
131869915213,115cyclictest32059-21sed12:16:050
131869915211,99cyclictest25968-21/usr/sbin/munin08:25:480
13186991519,120cyclictest28674-21tr08:40:490
131869915137,22cyclictest28215-21cpu11:55:220
131869915124,27cyclictest21006-21diskstats07:55:330
131869915118,23cyclictest15129-21munin-run07:20:020
131869915113,114cyclictest30269-21ntpq08:50:480
131869915111,21cyclictest17521-21apt-get10:50:160
131869915110,116cyclictest319-21if_eth009:05:380
131869915074,52cyclictest2871-21/usr/sbin/munin09:20:470
131869915073,34cyclictest13978-21munin-run07:15:020
131869915021,101cyclictest23176-21users08:06:060
131869915013,27cyclictest26965-21proc_pri11:45:540
131869915013,114cyclictest24423-21memory11:30:490
131869915011,113cyclictest9022-21/usr/sbin/munin10:00:480
131869915010,26cyclictest1255-21sshd09:10:480
13186991499,27cyclictest16462-21latency_hist10:45:080
131869914939,21cyclictest12877-21processes10:21:010
131869914917,107cyclictest19791-21users11:01:250
131869914916,21cyclictest25832-21users08:21:210
131869914915,24cyclictest32531-21apt09:05:010
131869914914,113cyclictest23814-21grep11:25:580
131869914912,114cyclictest1624-21memory12:30:470
131869914911,24cyclictest14682-21head10:31:040
131869914816,24cyclictest22697-21df_inode11:20:360
131869914815,22cyclictest12355-21munin-run10:20:020
131869914815,110cyclictest20034-21df11:05:270
131869914813,111cyclictest6708-21/usr/sbin/munin09:45:260
131869914812,25cyclictest4188-21/usr/sbin/munin09:30:480
131869914719,25cyclictest26478-21sshd11:42:180
131869914717,105cyclictest24981-21apt-get11:35:200
131869914714,108cyclictest22085-21grep08:00:530
131869914615,109cyclictest32357-21diskstats12:20:340
131869914610,31cyclictest18173-21cut07:35:590
13186991459,112cyclictest29604-21rt-features08:46:000
131869914519,27cyclictest16842-21apt-get07:30:230
131869914516,105cyclictest21428-21munin-run11:15:040
131869914512,109cyclictest19461-21sshd07:45:390
131869914428,23cyclictest0-21swapper07:50:140
131869914417,106cyclictest2474-21apt09:20:020
131869914414,27cyclictest26879-21/usr/sbin/munin08:30:310
131869914319,23cyclictest18316-21apt-get10:55:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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