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2025-09-17 - 12:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #4

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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackfslot4s.osadl.org (updated Wed Sep 17, 2025 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
658021270,4chrt6581-21cpu00:00:560
1220621150,2sleep012208-21processes23:12:110
2848821120,2chrt28489-21sleep23:41:250
1749021110,2chrt17494-21irqrtprio20:20:430
1694721060,2chrt16943-21ps22:22:100
3046021050,2chrt30461-21ld21:46:200
1207221040,3chrt12073-21sh21:14:110
122921010,2chrt1230-21sleep20:52:470
94662980,1sleep09467-21hddtemp_smartct00:05:560
160652920,2sleep016066-21smartctl00:17:170
1169128710,19sleep011703-21ntpq19:05:440
143122840,2sleep014311-21date00:15:030
266042770,2sleep026602-21missed_timers00:36:150
283312740,1sleep028333-21sshd22:42:270
185572670,2sleep018559-21latency_hist19:20:070
210182660,2sleep021022-21kernelversion00:26:140
224252610,1sleep022426-21if_err_eth023:31:020
46152590,1sleep04613-21aten2.4_rfpower21:00:260
11552580,1sleep01156-21ssh21:52:110
95202570,1sleep09522-21latency_hist21:10:090
51802572,7sleep05152-21apt-get23:00:180
194002542,44sleep019382-21ssh21:26:420
13155905319,24cyclictest0-21swapper19:40:390
95842520,1sleep09585-21xargs23:07:150
188012522,42sleep018805-21ssh23:24:540
152132512,6sleep015265-21sed21:20:030
13155905019,24cyclictest0-21swapper22:38:040
126832502,40sleep012692-21ntpq20:11:030
37772493,6sleep03772-21ssh21:56:470
240672490,2chrt24065-21sendmail-mta00:31:420
200522493,37sleep020091-21/usr/sbin/munin23:26:150
13155904919,23cyclictest0-21swapper22:12:220
210782482,6sleep021080-21sleep19:24:430
13155904820,14cyclictest0-21swapper00:23:200
13155904819,22cyclictest0-21swapper22:28:580
13155904817,22cyclictest0-21swapper22:15:100
41202472,5sleep04115-21ssh22:57:220
237102472,35sleep023759-21cat19:30:020
13155904718,22cyclictest0-21swapper22:08:560
13155904716,23cyclictest0-21swapper21:44:570
13155904715,25cyclictest0-21swapper19:50:380
248692462,35sleep024872-21gcc19:31:010
13155904618,20cyclictest0-21swapper23:53:100
13155904617,21cyclictest0-21swapper21:32:490
134772452,7sleep013452-21apt-get23:15:170
13155904518,20cyclictest0-21swapper23:59:370
13155904516,22cyclictest0-21swapper21:38:410
13155904515,23cyclictest0-21swapper22:48:010
13155904416,21cyclictest0-21swapper21:23:150
13155904321,15cyclictest0-21swapper23:37:370
13155904317,17cyclictest31107-21ssh23:46:110
13155904316,10cyclictest4166-21aten2.4_rfpower19:55:280
13155904314,23cyclictest888-21ssh22:51:460
102952432,34sleep010301-21ld20:06:210
1315590425,19cyclictest27865-21users19:36:310
1315590424,19cyclictest15314-21ntpq20:16:150
1315590424,10cyclictest27640-21irqstats20:40:440
13155904214,19cyclictest0-21swapper22:34:340
13155904213,21cyclictest0-21swapper22:03:420
1315590415,17cyclictest2144-21sshd20:55:250
13155904118,16cyclictest0-21swapper20:25:250
13155904117,17cyclictest24268-21/usr/sbin/munin20:35:470
1315590404,18cyclictest859-21snmpd19:13:430
1315590404,10cyclictest29675-21diskstats20:45:330
1315590395,26cyclictest22861-21ntpq20:31:050
13155903914,20cyclictest0-21swapper19:49:570
1315590384,27cyclictest6580-21apt-get20:00:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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