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2025-11-07 - 09:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 rack8slot7s.osadl.org (updated Fri Nov 07, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2387992018,1cyclictest55650irq/125-lan23:45:171
2387991918,1cyclictest55650irq/125-lan23:35:151
2387991918,1cyclictest55650irq/125-lan23:03:481
2387991918,1cyclictest55650irq/125-lan22:10:261
2387991918,1cyclictest55650irq/125-lan22:00:481
2387991918,1cyclictest55650irq/125-lan21:33:331
2387991918,1cyclictest55650irq/125-lan21:22:491
2387991918,1cyclictest55650irq/125-lan20:14:541
2387991918,1cyclictest55650irq/125-lan19:44:201
2387991918,1cyclictest55650irq/125-lan00:25:031
2387991918,1cyclictest55650irq/125-lan00:20:211
2387991918,1cyclictest55650irq/125-lan00:17:391
2387991918,1cyclictest55650irq/125-lan00:06:521
2387991818,0cyclictest55650irq/125-lan23:53:231
2387991818,0cyclictest55650irq/125-lan22:54:261
2387991818,0cyclictest55650irq/125-lan22:35:191
2387991818,0cyclictest55650irq/125-lan22:25:071
2387991818,0cyclictest55650irq/125-lan22:22:201
2387991818,0cyclictest55650irq/125-lan21:48:391
2387991818,0cyclictest55650irq/125-lan21:27:261
2387991818,0cyclictest55650irq/125-lan20:18:451
2387991818,0cyclictest55650irq/125-lan00:30:411
2387991817,1cyclictest55650irq/125-lan23:33:171
2387991817,1cyclictest55650irq/125-lan23:24:371
2387991817,1cyclictest55650irq/125-lan23:06:341
2387991817,1cyclictest55650irq/125-lan22:55:171
2387991817,1cyclictest55650irq/125-lan22:42:071
2387991817,1cyclictest55650irq/125-lan22:31:311
2387991817,1cyclictest55650irq/125-lan22:16:181
2387991817,1cyclictest55650irq/125-lan22:07:341
2387991817,1cyclictest55650irq/125-lan21:40:191
2387991817,1cyclictest55650irq/125-lan21:16:521
2387991817,1cyclictest55650irq/125-lan21:10:061
2387991817,1cyclictest55650irq/125-lan20:30:141
2387991817,1cyclictest55650irq/125-lan20:24:151
2387991817,1cyclictest55650irq/125-lan20:09:311
2387991817,1cyclictest55650irq/125-lan19:34:461
2387991817,1cyclictest55650irq/125-lan00:36:291
2387991817,1cyclictest55650irq/125-lan00:00:491
2387991717,0cyclictest55650irq/125-lan23:57:321
2387991717,0cyclictest55650irq/125-lan23:41:301
2387991717,0cyclictest55650irq/125-lan21:55:061
2387991717,0cyclictest55650irq/125-lan00:13:251
2387991716,1cyclictest55650irq/125-lan23:15:521
2387991716,1cyclictest55650irq/125-lan23:10:121
2387991716,1cyclictest55650irq/125-lan22:46:571
2387991716,1cyclictest55650irq/125-lan21:35:041
2387991716,1cyclictest55650irq/125-lan20:57:581
2387991716,1cyclictest55650irq/125-lan19:18:011
2387991716,0cyclictest55650irq/125-lan19:37:151
2387991616,0cyclictest55650irq/125-lan20:27:311
2387991616,0cyclictest55650irq/125-lan19:48:281
2387991615,1cyclictest55650irq/125-lan21:50:111
2387991615,1cyclictest55650irq/125-lan21:05:251
2387991615,1cyclictest55650irq/125-lan20:41:151
2387991615,1cyclictest55650irq/125-lan20:00:411
2387991615,1cyclictest55650irq/125-lan19:20:141
2387991615,1cyclictest55650irq/125-lan19:14:461
2387991515,0cyclictest55650irq/125-lan20:45:141
2387991514,1cyclictest55650irq/125-lan20:38:341
2387991514,1cyclictest55650irq/125-lan19:25:551
2387991414,0cyclictest55650irq/125-lan19:50:101
2387991413,1cyclictest55650irq/125-lan20:51:071
2387991313,0cyclictest55650irq/125-lan19:58:541
2387991312,1cyclictest55650irq/125-lan21:00:151
2385991313,0cyclictest294-21hwrng21:34:040
2385991111,0cyclictest294-21hwrng21:45:190
238599108,1cyclictest0-21swapper/000:00:140
238599106,3cyclictest703-21snmpd23:32:400
238599106,3cyclictest703-21snmpd20:58:140
238599105,4cyclictest17936-21ntpq19:50:180
23859998,1cyclictest703-21snmpd22:57:300
23859998,1cyclictest703-21snmpd22:16:530
23859998,1cyclictest1602-21ntp_kernel_err22:00:180
23859998,1cyclictest15670-21ntp_kernel_pll_21:10:170
23859997,1cyclictest0-21swapper/023:00:230
23859996,2cyclictest703-21snmpd22:48:080
23859996,2cyclictest703-21snmpd21:38:060
23859996,2cyclictest703-21snmpd20:13:360
23859996,2cyclictest703-21snmpd19:39:560
23859995,3cyclictest703-21snmpd23:58:400
23859995,3cyclictest703-21snmpd20:22:400
23859988,0cyclictest703-21snmpd23:06:440
23859988,0cyclictest703-21snmpd20:30:150
23859988,0cyclictest294-21hwrng20:25:260
23859988,0cyclictest294-21hwrng19:55:450
23859988,0cyclictest294-21hwrng19:22:590
23859988,0cyclictest294-21hwrng19:10:410
23859988,0cyclictest294-21hwrng00:37:200
23859988,0cyclictest294-21hwrng00:06:380
23859987,1cyclictest729-21gltestperf00:10:150
23859987,1cyclictest703-21snmpd23:35:280
23859987,1cyclictest703-21snmpd21:44:340
23859987,1cyclictest703-21snmpd19:47:260
23859987,1cyclictest703-21snmpd00:30:260
23859987,1cyclictest6340-21cut22:05:130
23859987,1cyclictest31035-21kworker/u4:0+nfsiod22:40:170
23859987,1cyclictest19843-21/usr/sbin/munin23:25:180
23859986,2cyclictest703-21snmpd22:12:470
23859986,2cyclictest703-21snmpd19:42:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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