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2025-12-20 - 20:31

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 Dec 20, 2025 12:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29326224192190,86sleep00-21swapper07:07:450
296229916035,98cyclictest10001-21apt-config11:45:090
296229916013,122cyclictest30340-21grep07:11:050
296229916012,124cyclictest109-21systemd-journal08:00:040
296229915822,108cyclictest31751-21apt-get07:20:330
296229915620,28cyclictest22263-21apt-get09:40:160
296229915613,26cyclictest2402-21wc10:55:580
296229915611,27cyclictest28704-21sh10:20:000
296229915610,120cyclictest9907-21apt-get11:47:000
296229915517,23cyclictest25450-21users09:56:050
296229915516,115cyclictest20956-21zcat09:30:580
296229915514,24cyclictest1738-21apt-get07:36:020
296229915514,118cyclictest1740-21/usr/sbin/munin07:35:060
296229915510,121cyclictest10018-21sort08:25:030
29622991549,25cyclictest7341-21grep11:26:010
296229915415,117cyclictest29732-21df10:25:280
296229915411,119cyclictest11426-21sort08:31:010
296229915334,98cyclictest10107-21apt-get08:25:150
296229915322,29cyclictest12623-21diskstats08:40:320
296229915317,37cyclictest15749-21munin-run12:20:010
296229915315,109cyclictest30847-21/usr/sbin/munin07:16:190
296229915313,115cyclictest27573-21grep10:10:530
296229915312,120cyclictest32341-21tr10:40:490
29622991528,24cyclictest16086-21grep09:00:520
296229915238,19cyclictest22055-21modprobe09:40:010
296229915218,23cyclictest23209-21apt-get09:45:250
296229915211,117cyclictest27079-21awk10:06:080
296229915132,19cyclictest5885-21sh11:20:000
296229915128,21cyclictest31921-21munin-run10:40:010
296229915125,90cyclictest0-21swapper11:31:000
296229915118,25cyclictest11693-21apt-get08:35:230
296229915117,107cyclictest11832-21apt-get11:55:190
296229915116,22cyclictest17311-21apt-get09:10:140
296229915115,112cyclictest12753-21df12:00:270
296229915113,27cyclictest3307-21zcat07:41:030
296229915112,28cyclictest14544-21grep12:10:490
29622991508,121cyclictest14472-21wc08:50:560
296229915015,105cyclictest18103-21/usr/sbin/munin09:15:360
296229915014,112cyclictest8393-21sshd11:35:140
296229915012,114cyclictest3970-21awk07:45:490
296229915010,23cyclictest11647-21unixbench_singl11:51:120
296229914934,92cyclictest32712-21apt-get07:25:170
296229914917,110cyclictest2895-21df11:00:280
296229914910,26cyclictest6658-21sort08:01:020
296229914817,27cyclictest13443-21/usr/sbin/munin12:05:500
296229914813,26cyclictest25614-21/usr/sbin/munin10:00:240
296229914813,23cyclictest18366-21diskstats12:35:330
296229914812,23cyclictest109-21systemd-journal12:22:340
296229914812,110cyclictest17875-21grep12:30:560
296229914737,89cyclictest372-21apt-get10:45:140
296229914734,92cyclictest15540-21sed08:56:040
296229914728,96cyclictest315-21sshd08:10:030
296229914721,105cyclictest30708-21tr10:30:480
296229914717,24cyclictest19903-21irqstats09:25:390
296229914717,107cyclictest7785-21df08:10:280
296229914716,24cyclictest19177-21memory09:20:440
296229914715,106cyclictest4940-21mailstats07:50:590
296229914714,37cyclictest13801-21cut08:45:590
296229914713,36cyclictest1291-21diskstats10:50:340
296229914713,114cyclictest24703-21latency_hist09:55:030
296229914710,113cyclictest16515-21/usr/sbin/munin09:05:460
296229914516,106cyclictest3692-21df_inode11:05:290
296229914514,106cyclictest4493-21diskstats11:10:300
296229914511,115cyclictest6891-21kworker/u2:108:15:130
296229914510,111cyclictest29443-21head10:21:030
296229914419,28cyclictest16776-21diskstats12:25:340
296229914418,24cyclictest6123-21diskstats11:20:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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