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2026-07-19 - 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 100 highest latencies:
System rack5slot7s.osadl.org (updated Sun Jul 19, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22916224442212,89sleep00-21swapper07:06:580
232999916029,19cyclictest6683-21grep08:45:060
232999916013,121cyclictest26409-21apt-get10:46:370
23299991598,127cyclictest23396-21apt-get07:10:210
232999915940,99cyclictest15777-21switchtime09:36:030
232999915922,28cyclictest29040-21memory07:40:470
232999915835,101cyclictest30590-21grep11:06:030
232999915715,118cyclictest6838-21apt-get08:45:250
232999915618,27cyclictest20980-21diskstats10:10:350
232999915617,26cyclictest25239-21munin-run07:20:030
232999915617,25cyclictest5856-21munin-run08:40:010
232999915544,20cyclictest1272-21timerandwakeup11:26:030
232999915513,119cyclictest10244-21apt12:25:000
232999915511,118cyclictest7124-21/usr/sbin/munin12:06:000
232999915427,33cyclictest0-21swapper10:20:060
232999915415,99cyclictest9441-21apt-get09:00:270
232999915383,49cyclictest4536-21/usr/sbin/munin08:30:420
232999915317,37cyclictest0-21swapper08:50:270
232999915316,113cyclictest29262-21diskstats11:00:310
232999915312,117cyclictest28330-21apt-get10:55:190
232999915311,119cyclictest3758-21grep11:41:020
232999915310,123cyclictest16761-21sh09:45:010
232999915227,105cyclictest10441-21apt-get09:05:160
232999915220,103cyclictest10346-21apt-get12:25:210
232999915219,109cyclictest6211-21munin-run12:00:020
232999915217,108cyclictest16866-21apt-get09:45:190
232999915215,116cyclictest31434-21apt11:15:010
232999915212,116cyclictest9238-21head08:56:060
232999915211,114cyclictest7071-21cat12:05:040
232999915121,29cyclictest1503-21apt-get11:30:210
232999915117,24cyclictest27599-21apt-get07:31:580
232999915117,22cyclictest25815-21df10:40:270
232999915115,109cyclictest12742-21munin-run09:20:020
232999915113,116cyclictest30897-21wc07:51:000
232999915110,26cyclictest18299-21head09:51:020
232999915110,117cyclictest4179-21sed08:26:060
232999915032,95cyclictest1103-21latency_hist08:10:050
232999915020,26cyclictest24998-21df_inode10:35:300
232999915019,106cyclictest2589-21users08:16:030
232999915018,106cyclictest4713-21apt-get11:50:200
232999915017,27cyclictest13659-21apt-get09:25:170
232999915015,98cyclictest8578-21users12:11:050
232999915014,24cyclictest28409-21/usr/sbin/munin07:36:040
232999915013,110cyclictest8716-21/usr/sbin/munin12:15:440
232999915010,25cyclictest18877-21grep09:55:560
23299991499,98cyclictest2778-21wc08:20:210
23299991498,101cyclictest13436-21snmpd08:00:420
232999914923,105cyclictest22498-21apt-get10:20:130
232999914922,28cyclictest26155-21apt-get07:25:210
232999914915,25cyclictest1833-21munin-run08:15:020
232999914914,25cyclictest23474-21irqstats10:25:400
232999914912,114cyclictest20021-21wc10:05:040
232999914815,109cyclictest2997-21apt11:40:010
232999914813,112cyclictest24203-21df_inode10:30:310
23299991479,24cyclictest25868-21grep07:21:040
232999914712,26cyclictest27646-21diskstats10:50:370
232999914712,112cyclictest14450-21/usr/sbin/munin09:31:100
232999914626,20cyclictest32251-21munin-run11:20:020
232999914615,106cyclictest20180-21df_inode10:05:290
232999914572,50cyclictest12637-21apt12:40:010
232999914515,28cyclictest11230-21/usr/sbin/munin09:10:460
232999914514,91cyclictest29697-21df_inode07:45:290
232999914514,108cyclictest11313-21irqstats12:30:400
232999914418,24cyclictest4159-21memory11:45:440
232999914418,102cyclictest32543-21irqstats11:20:390
232999914411,25cyclictest13425-21timerandwakeup09:21:020
232999914336,86cyclictest31859-21sshd07:57:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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