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2026-05-28 - 04:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 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 rack7slot7s.osadl.org (updated Thu May 28, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1766629481,9sleep00-21swapper/019:08:020
1762329279,9sleep20-21swapper/219:07:282
1752528370,9sleep30-21swapper/319:06:123
1769528265,13sleep10-21swapper/119:08:231
1791099266,18cyclictest0-21swapper/020:25:110
17910992423,1cyclictest0-21swapper/023:48:550
17910992412,2cyclictest13-21ksoftirqd/022:36:390
17914992322,1cyclictest0-21swapper/221:42:422
1791499230,22cyclictest0-21swapper/222:01:332
17913992320,3cyclictest25-21ksoftirqd/120:35:131
1791399230,23cyclictest0-21swapper/100:28:511
1791099239,12cyclictest0-21swapper/000:34:450
1791099238,14cyclictest0-21swapper/023:41:060
17910992323,0cyclictest161rcuc/023:22:390
17914992221,1cyclictest0-21swapper/200:19:522
1791399221,21cyclictest10708-21diskmemload23:52:571
17910992220,2cyclictest0-21swapper/023:27:000
17910992220,1cyclictest10708-21diskmemload23:05:000
17914992118,3cyclictest0-21swapper/223:46:222
17914992117,3cyclictest0-21swapper/222:59:122
1791399211,20cyclictest0-21swapper/120:05:131
17910992118,2cyclictest0-21swapper/022:45:000
17915992012,1cyclictest141rcu_preempt23:16:053
17914992018,1cyclictest0-21swapper/221:12:222
17914992016,4cyclictest0-21swapper/221:45:222
1791499200,12cyclictest0-21swapper/200:21:592
17913992016,3cyclictest25-21ksoftirqd/100:13:341
1791399200,19cyclictest0-21swapper/122:15:011
17910992017,2cyclictest0-21swapper/021:20:250
1791499190,18cyclictest0-21swapper/221:31:322
1791399190,3cyclictest141rcu_preempt00:20:221
1791399190,1cyclictest0-21swapper/122:05:121
1791099194,15cyclictest0-21swapper/000:03:160
1791099194,15cyclictest0-21swapper/000:03:160
1791099191,17cyclictest0-21swapper/023:10:120
17913991818,0cyclictest0-21swapper/122:53:511
17913991817,1cyclictest0-21swapper/122:47:211
17913991814,3cyclictest25-21ksoftirqd/123:15:001
1791399180,1cyclictest0-21swapper/100:31:141
1791099188,9cyclictest0-21swapper/023:37:170
1791099185,7cyclictest5963-21grep21:00:000
17910991816,1cyclictest10708-21diskmemload00:25:360
17910991810,7cyclictest0-21swapper/000:20:130
121432180,0chrt0-21swapper/122:27:171
1791599170,16cyclictest0-21swapper/321:25:143
17914991713,4cyclictest0-21swapper/223:02:022
1791499170,3cyclictest0-21swapper/200:31:522
17913991717,0cyclictest0-21swapper/121:44:331
17913991716,1cyclictest221irq_work/123:19:301
17913991715,2cyclictest25-21ksoftirqd/122:34:551
1791099179,8cyclictest10708-21diskmemload21:57:590
17910991715,2cyclictest10708-21diskmemload22:53:050
17910991715,0cyclictest10708-21diskmemload22:58:460
17910991714,3cyclictest13571-21ssh21:50:120
17910991714,3cyclictest10708-21diskmemload22:13:350
1791599166,4cyclictest7737-21sh22:25:133
17915991612,2cyclictest28372-21cut19:30:173
1791599160,1cyclictest0-21swapper/300:22:263
17914991614,2cyclictest0-21swapper/221:59:222
17914991612,4cyclictest0-21swapper/200:02:222
17914991612,4cyclictest0-21swapper/200:02:222
17914991611,4cyclictest17603-21sensors22:30:222
1791399162,1cyclictest141rcu_preempt23:44:561
17913991615,1cyclictest0-21swapper/123:58:481
17913991615,1cyclictest0-21swapper/100:19:181
1791399161,2cyclictest0-21swapper/122:59:101
1791399160,2cyclictest0-21swapper/121:11:071
1791399160,12cyclictest0-21swapper/121:00:211
1791099169,5cyclictest31075-21/usr/sbin/munin23:55:220
1791099163,13cyclictest0-21swapper/023:07:210
17910991615,1cyclictest10708-21diskmemload22:22:150
17910991615,1cyclictest10708-21diskmemload00:39:130
17910991614,2cyclictest0-21swapper/022:31:140
17910991614,2cyclictest0-21swapper/022:03:110
17910991614,1cyclictest0-21swapper/023:15:130
17910991610,5cyclictest0-21swapper/022:05:120
17915991514,1cyclictest0-21swapper/321:10:363
1791599151,3cyclictest0-21swapper/321:18:293
1791599151,2cyclictest0-21swapper/322:01:383
1791599150,15cyclictest0-21swapper/300:04:113
1791599150,15cyclictest0-21swapper/300:04:113
1791599150,14cyclictest0-21swapper/321:42:503
1791499153,3cyclictest6273-21switchtime19:50:242
1791399153,11cyclictest0-21swapper/122:39:511
17913991512,1cyclictest0-21swapper/123:03:541
1791399150,3cyclictest0-21swapper/121:52:251
1791399150,1cyclictest0-21swapper/123:25:001
1791399150,15cyclictest0-21swapper/123:45:321
1791399150,13cyclictest0-21swapper/100:39:441
1791099158,5cyclictest2921-21rm00:17:160
1791099155,10cyclictest0-21swapper/022:47:240
17910991513,2cyclictest10708-21diskmemload21:43:510
17910991513,2cyclictest0-21swapper/000:08:590
17910991512,2cyclictest21736-21/usr/sbin/munin21:35:190
17910991512,2cyclictest0-21swapper/021:15:210
17910991511,2cyclictest10708-21diskmemload21:32:030
1791099150,1cyclictest13-21ksoftirqd/020:00:130
1791599144,10cyclictest0-21swapper/322:40:133
17915991413,1cyclictest22550-21ssh00:10:133
1791599141,1cyclictest10708-21diskmemload23:52:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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