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2026-04-29 - 05:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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 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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack3slot6s.osadl.org (updated Wed Apr 29, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10062210897,6sleep20-21swapper/219:08:252
9978210783,19sleep00-21swapper/019:07:190
9476210696,6sleep10-21swapper/119:05:561
10063210685,16sleep30-21swapper/319:08:263
269062740,1sleep126466-21diskmemload22:55:171
52402720,1sleep1221ktimersoftd/123:41:511
10216993818,18cyclictest3728-21runrttasks19:20:113
10215993717,18cyclictest0-21swapper/222:40:132
10216993315,1cyclictest0-21swapper/321:50:123
214772280,0sleep30-21swapper/321:39:403
1021499232,16cyclictest0-21swapper/123:05:041
1021499223,14cyclictest0-21swapper/121:31:041
1021499222,15cyclictest0-21swapper/123:18:041
1021599210,2cyclictest0-21swapper/223:25:132
1021499211,15cyclictest0-21swapper/122:42:041
1021399210,19cyclictest0-21swapper/019:50:120
16352200,1sleep30-21swapper/322:27:463
1021699200,2cyclictest0-21swapper/321:10:133
1021499200,2cyclictest0-21swapper/121:50:131
1021499200,18cyclictest0-21swapper/119:10:131
1021599190,1cyclictest0-21swapper/221:25:122
1021499192,2cyclictest0-21swapper/122:50:041
1021499192,2cyclictest0-21swapper/119:17:041
1021499192,16cyclictest0-21swapper/120:57:041
1021499192,16cyclictest0-21swapper/119:28:041
1021499192,14cyclictest0-21swapper/120:43:051
1021499191,2cyclictest0-21swapper/121:48:051
1021499190,4cyclictest0-21swapper/121:23:041
1021499190,4cyclictest0-21swapper/121:23:041
1021499182,2cyclictest0-21swapper/123:12:041
1021499182,2cyclictest0-21swapper/100:34:051
10214991815,2cyclictest19647-21kworker/u8:021:19:041
1021499181,2cyclictest0-21swapper/123:23:041
1021499181,2cyclictest0-21swapper/122:38:051
1021499181,2cyclictest0-21swapper/122:28:041
1021499181,2cyclictest0-21swapper/119:59:041
1021499181,2cyclictest0-21swapper/119:21:041
1021499180,4cyclictest26466-21diskmemload23:50:051
1021499180,2cyclictest0-21swapper/121:43:041
10215991712,3cyclictest16357-21sshd23:19:542
1021499172,2cyclictest0-21swapper/122:46:011
1021499172,2cyclictest0-21swapper/119:40:041
1021499172,2cyclictest0-21swapper/100:14:011
1021499171,6cyclictest0-21swapper/119:46:041
1021499171,2cyclictest0-21swapper/120:18:051
1021499171,2cyclictest0-21swapper/120:02:041
1021499171,2cyclictest0-21swapper/100:37:041
1021499171,2cyclictest0-21swapper/100:22:051
1021499171,1cyclictest0-21swapper/123:03:041
1021499170,2cyclictest0-21swapper/119:35:041
1021499170,13cyclictest0-21swapper/120:11:041
1021699160,14cyclictest0-21swapper/323:35:543
10215991613,2cyclictest16700-21kworker/u8:121:46:042
1021599161,13cyclictest18229-21ssh23:56:032
1021499162,2cyclictest0-21swapper/121:56:041
1021499162,2cyclictest0-21swapper/100:02:051
1021499161,2cyclictest0-21swapper/123:38:051
1021499161,2cyclictest0-21swapper/123:34:041
1021499161,2cyclictest0-21swapper/120:30:041
1021499161,2cyclictest0-21swapper/100:27:041
1021499161,14cyclictest0-21swapper/123:28:051
1021499160,2cyclictest0-21swapper/121:14:041
1021499160,15cyclictest0-21swapper/121:09:051
1021499160,11cyclictest0-21swapper/100:08:051
1021399161,3cyclictest0-21swapper/021:30:170
10216991512,2cyclictest0-21swapper/323:16:343
10216991511,2cyclictest13266-21ssh22:05:143
1021699150,13cyclictest0-21swapper/323:45:143
10215991512,2cyclictest4832-21kworker/u8:200:20:042
10215991510,3cyclictest10569-21ssh23:47:582
1021599150,13cyclictest0-21swapper/200:31:332
1021499151,2cyclictest0-21swapper/122:06:041
1021499151,2cyclictest0-21swapper/121:26:051
10214991512,2cyclictest2811-21kworker/u8:023:46:041
10214991511,2cyclictest3065-21awk00:15:171
10214991510,3cyclictest0-21swapper/122:12:081
1021499150,2cyclictest0-21swapper/122:21:041
1021499150,2cyclictest0-21swapper/121:38:041
1021499150,2cyclictest0-21swapper/121:02:041
10213991510,3cyclictest0-21swapper/000:10:160
54592141,3sleep35468-21ssh23:07:063
1021699144,5cyclictest0-21swapper/319:15:043
1021699141,2cyclictest13987-21users20:36:033
10216991411,2cyclictest0-21swapper/321:44:043
10216991411,2cyclictest0-21swapper/300:25:173
10216991411,2cyclictest0-21swapper/300:00:143
1021699140,2cyclictest0-21swapper/322:45:163
1021699140,13cyclictest0-21swapper/322:52:343
1021699140,13cyclictest0-21swapper/322:37:243
1021699140,13cyclictest0-21swapper/321:27:443
1021699140,13cyclictest0-21swapper/321:23:243
1021699140,13cyclictest0-21swapper/321:23:243
1021699140,12cyclictest31379-21kworker/u8:121:16:063
1021699140,12cyclictest29869-21ssh22:59:073
1021699140,12cyclictest18279-21iostat22:10:163
1021699140,12cyclictest15845-21rm22:43:173
1021699140,12cyclictest0-21swapper/323:00:113
1021599144,6cyclictest340-21rm22:26:022
10215991411,2cyclictest3127-21nscd23:37:042
10215991411,2cyclictest20765-21kworker/u8:122:52:052
10215991411,2cyclictest0-21swapper/220:46:032
10215991411,2cyclictest0-21swapper/200:17:032
10215991410,2cyclictest0-21swapper/222:06:432
1021599140,2cyclictest0-21swapper/222:45:532
1021599140,12cyclictest0-21swapper/223:52:012
1021599140,12cyclictest0-21swapper/223:20:042
1021599140,12cyclictest0-21swapper/222:35:032
1021599140,12cyclictest0-21swapper/220:40:072
1021599140,12cyclictest0-21swapper/200:06:442
1021499140,13cyclictest0-21swapper/119:30:041
1021399149,3cyclictest0-21swapper/023:25:150
1021399142,6cyclictest0-21swapper/021:55:000
10213991411,2cyclictest0-21swapper/000:38:480
1021399141,11cyclictest8092-21apt-get22:35:110
1021399141,11cyclictest3318-21sh21:20:010
1021399141,11cyclictest3318-21sh21:20:010
1021399140,13cyclictest0-21swapper/023:40:180
1021399140,13cyclictest0-21swapper/023:10:080
1021399140,12cyclictest7267-21latency_hist23:10:010
1021399140,12cyclictest0-21swapper/023:57:050
1021399140,12cyclictest0-21swapper/022:31:010
1021699139,2cyclictest0-21swapper/322:25:013
10216991310,2cyclictest26466-21diskmemload22:30:453
10216991310,2cyclictest0-21swapper/323:41:283
10216991310,2cyclictest0-21swapper/300:30:283
10216991310,2cyclictest0-21swapper/300:18:453
10216991310,2cyclictest0-21swapper/300:11:073
1021699130,2cyclictest24500-21ssh00:39:543
1021699130,2cyclictest0-21swapper/323:23:243
1021699130,2cyclictest0-21swapper/322:00:193
1021699130,2cyclictest0-21swapper/300:05:123
1021699130,12cyclictest0-21swapper/321:55:343
1021699130,12cyclictest0-21swapper/321:06:043
1021699130,11cyclictest0-21swapper/323:28:053
1021699130,11cyclictest0-21swapper/300:20:143
1021599138,3cyclictest3770-21cpuspeed_turbos21:20:132
1021599138,3cyclictest3770-21cpuspeed_turbos21:20:132
1021599138,3cyclictest0-21swapper/223:40:122
1021599138,3cyclictest0-21swapper/222:22:412
1021599132,6cyclictest0-21swapper/219:25:002
10215991310,2cyclictest7823-21kworker/u8:122:04:042
10215991310,2cyclictest26466-21diskmemload00:11:132
10215991310,2cyclictest0-21swapper/222:55:532
10215991310,2cyclictest0-21swapper/222:16:232
10215991310,2cyclictest0-21swapper/221:34:432
10215991310,2cyclictest0-21swapper/220:50:112
10215991310,2cyclictest0-21swapper/200:28:432
10215991310,2cyclictest0-21swapper/200:02:232
1021599130,8cyclictest0-21swapper/220:55:042
1021599130,3cyclictest0-21swapper/221:37:392
1021599130,2cyclictest0-21swapper/223:04:442
1021599130,2cyclictest0-21swapper/222:12:432
1021599130,2cyclictest0-21swapper/221:57:082
1021599130,2cyclictest0-21swapper/219:25:172
1021599130,12cyclictest0-21swapper/221:18:132
1021599130,12cyclictest0-21swapper/220:05:122
1021499138,3cyclictest0-21swapper/120:25:171
1021499132,6cyclictest0-21swapper/122:15:021
10214991310,2cyclictest0-21swapper/122:30:061
1021499130,11cyclictest0-21swapper/122:00:101
1021399133,6cyclictest19039-21ssh21:36:000
10213991310,2cyclictest0-21swapper/023:31:020
10213991310,2cyclictest0-21swapper/022:16:040
10213991310,2cyclictest0-21swapper/021:10:180
10213991310,2cyclictest0-21swapper/020:05:130
10213991310,2cyclictest0-21swapper/019:31:000
1021399130,2cyclictest0-21swapper/023:01:010
1021399130,2cyclictest0-21swapper/022:10:280
1021399130,2cyclictest0-21swapper/021:42:480
1021399130,2cyclictest0-21swapper/000:29:180
1021399130,12cyclictest0-21swapper/022:56:010
1021399130,12cyclictest0-21swapper/022:43:390
1021399130,12cyclictest0-21swapper/022:23:380
1021399130,12cyclictest0-21swapper/021:00:180
1021399130,12cyclictest0-21swapper/000:00:080
1021399130,11cyclictest18390-21ssh00:32:000
272352120,2sleep30-21swapper/323:30:433
1021699129,2cyclictest0-21swapper/323:50:223
1021699129,2cyclictest0-21swapper/322:17:043
1021699129,2cyclictest0-21swapper/321:48:143
1021699129,2cyclictest0-21swapper/321:30:573
1021699129,2cyclictest0-21swapper/321:00:113
1021699129,2cyclictest0-21swapper/319:45:173
1021699123,5cyclictest0-21swapper/319:31:003
1021699120,2cyclictest0-21swapper/323:10:163
1021699120,11cyclictest0-21swapper/323:56:153
1021699120,11cyclictest0-21swapper/320:25:203
1021599129,2cyclictest354-21kworker/u8:220:34:012
1021599129,2cyclictest30388-21kworker/u8:120:16:042
1021599129,2cyclictest0-21swapper/223:30:342
1021599129,2cyclictest0-21swapper/221:51:202
1021599129,2cyclictest0-21swapper/221:01:032
1021599129,2cyclictest0-21swapper/200:38:002
1021599120,2cyclictest5616-21ssh22:31:222
1021599120,2cyclictest0-21swapper/223:12:392
1021599120,2cyclictest0-21swapper/221:40:082
1021599120,2cyclictest0-21swapper/220:00:122
1021599120,11cyclictest0-21swapper/223:06:432
1021599120,11cyclictest0-21swapper/221:11:132
1021599120,11cyclictest0-21swapper/219:50:312
1021499129,2cyclictest0-21swapper/123:55:101
1021499121,9cyclictest12520-21munin-node1
1021499121,9cyclictest0-21swapper/120:05:161
1021399129,2cyclictest0-21swapper/023:50:150
1021399129,2cyclictest0-21swapper/023:36:030
1021399129,2cyclictest0-21swapper/023:24:390
1021399129,2cyclictest0-21swapper/022:45:010
1021399129,2cyclictest0-21swapper/022:26:360
1021399129,2cyclictest0-21swapper/022:05:160
1021399129,2cyclictest0-21swapper/019:55:160
1021399129,2cyclictest0-21swapper/019:35:180
1021399129,2cyclictest0-21swapper/000:15:310
1021399129,2cyclictest0-21swapper/000:08:530
1021399127,3cyclictest12901-21ssh23:15:160
1021399120,2cyclictest0-21swapper/023:45:160
1021399120,2cyclictest0-21swapper/021:25:280
1021399120,2cyclictest0-21swapper/000:21:280
1021399120,11cyclictest26466-21diskmemload21:53:180
1021399120,11cyclictest0-21swapper/022:50:500
1021399120,11cyclictest0-21swapper/022:00:120
1021399120,11cyclictest0-21swapper/021:49:460
1021399120,11cyclictest0-21swapper/020:01:020
1021399120,11cyclictest0-21swapper/019:20:160
1021399120,10cyclictest26466-21diskmemload21:17:300
1021699118,2cyclictest0-21swapper/319:50:143
1021699112,6cyclictest0-21swapper/320:44:583
1021699110,9cyclictest18218-21kworker/u8:119:35:043
1021699110,10cyclictest19647-21kworker/u8:020:54:053
1021599118,2cyclictest6390-21kworker/u8:019:15:042
1021599118,2cyclictest19647-21kworker/u8:021:05:042
1021599118,2cyclictest0-21swapper/220:25:032
1021599118,2cyclictest0-21swapper/219:30:142
1021599111,7cyclictest0-21swapper/220:10:012
1021499117,2cyclictest0-21swapper/120:51:001
1021499117,2cyclictest0-21swapper/120:46:041
1021499110,9cyclictest0-21swapper/119:50:151
1021499110,2cyclictest0-21swapper/120:24:051
1021399118,2cyclictest0-21swapper/020:45:140
1021399118,2cyclictest0-21swapper/020:16:000
1021399114,3cyclictest25358-21kernelversion21:05:170
1021399111,5cyclictest0-21swapper/020:10:000
94222100,0sleep00-21swapper/020:25:180
1021699107,2cyclictest0-21swapper/320:45:513
1021699106,3cyclictest0-21swapper/320:20:173
1021699102,7cyclictest0-21swapper/319:26:583
1021699102,5cyclictest3688-21Xorg20:19:583
1021699100,9cyclictest20595-21kworker/u8:019:40:043
1021699100,7cyclictest4556-21metacity20:31:583
1021699100,2cyclictest0-21swapper/320:14:573
1021599107,2cyclictest20595-21kworker/u8:019:36:052
1021599107,2cyclictest0-21swapper/219:45:112
1021599102,6cyclictest0-21swapper/220:20:002
1021399107,2cyclictest0-21swapper/020:23:500
1021399105,3cyclictest18295-21cron19:30:000
1021399105,3cyclictest12822-21grep20:35:120
1021399102,7cyclictest0-21swapper/019:11:580
22135290,1sleep00-21swapper/020:56:440
102169996,2cyclictest0-21swapper/319:55:443
102169996,2cyclictest0-21swapper/319:11:473
102169990,8cyclictest30388-21kworker/u8:120:03:053
102159994,3cyclictest30228-21chrt19:57:282
102159994,3cyclictest12824-21tr20:35:122
102159991,4cyclictest0-21swapper/219:11:302
102159991,3cyclictest0-21swapper/219:41:032
102139996,2cyclictest14583-21apt-get20:40:120
102139994,3cyclictest23927-21grep19:41:050
102139993,5cyclictest0-21swapper/020:51:010
102139991,6cyclictest10996-21cut20:30:140
102169984,2cyclictest3728-21runrttasks20:55:543
102169983,3cyclictest576-21df_abs20:05:133
102139983,3cyclictest12801-21df_abs19:15:140
102139980,6cyclictest0-21swapper/019:45:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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