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2026-11-15 - 05:41

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 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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack3slot6s.osadl.org (updated Sun Nov 15, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9235210998,6sleep30-21swapper/319:06:453
8099210997,6sleep10-21swapper/119:05:111
9403210887,16sleep00-21swapper/019:08:530
9283210684,16sleep20-21swapper/219:07:202
951899360,19cyclictest0-21swapper/219:50:122
9517993529,4cyclictest29537-21sh21:47:051
9517993431,2cyclictest2264-21kworker/u8:123:51:051
9517993229,2cyclictest25676-21kworker/u8:200:28:061
9517993229,2cyclictest2264-21kworker/u8:100:02:051
9517993229,2cyclictest21276-21kworker/u8:100:32:051
9517993128,2cyclictest2914-21kworker/u8:121:22:011
9517993128,2cyclictest14938-21kworker/u8:023:43:041
951699311,2cyclictest0-21swapper/022:45:110
9517993027,2cyclictest4100-21kworker/u8:222:03:051
9517993027,2cyclictest10117-21kworker/u8:222:42:041
62242300,0sleep10-21swapper/100:13:511
9517992926,2cyclictest4100-21kworker/u8:222:12:041
9517992926,2cyclictest23359-21kworker/u8:022:23:041
9517992825,2cyclictest23855-21kworker/u8:021:42:041
9517992724,2cyclictest4100-21kworker/u8:221:58:031
9517992724,2cyclictest19019-21kworker/u8:122:51:051
9517992623,2cyclictest29178-21kworker/u8:223:10:011
951799260,11cyclictest0-21swapper/100:08:051
9517992522,2cyclictest23855-21kworker/u8:021:15:051
9517992522,2cyclictest23359-21kworker/u8:022:49:041
9517992522,2cyclictest2264-21kworker/u8:123:46:051
9517992522,2cyclictest14938-21kworker/u8:023:21:051
9517992421,2cyclictest17483-21kworker/u8:221:36:041
9517992421,2cyclictest15473-21kworker/u8:019:36:041
254132240,1sleep10-21swapper/123:59:591
9519992314,6cyclictest20018-21sendmail-mta23:59:233
9517992320,2cyclictest29178-21kworker/u8:223:01:041
9517992320,2cyclictest2642-21kworker/u8:123:18:051
951799230,18cyclictest0-21swapper/100:23:041
951899220,20cyclictest0-21swapper/219:55:122
9517992219,2cyclictest9769-21kworker/u8:119:18:001
9517992219,2cyclictest9205-21kworker/u8:020:31:031
9517992219,2cyclictest31980-21kworker/u8:020:13:041
9517992211,8cyclictest221ktimersoftd/122:16:041
951899210,2cyclictest0-21swapper/222:45:102
951899210,2cyclictest0-21swapper/219:20:112
9517992118,2cyclictest5804-21kworker/u8:221:04:011
9517992118,2cyclictest5804-21kworker/u8:220:56:041
9517992118,2cyclictest27941-21kworker/u8:220:02:011
951799210,18cyclictest0-21swapper/100:16:051
951899200,18cyclictest0-21swapper/221:20:102
9517992017,2cyclictest4100-21kworker/u8:222:26:041
9517992017,2cyclictest4100-21kworker/u8:222:26:041
9517992017,2cyclictest31980-21kworker/u8:020:16:011
9517992017,2cyclictest23866-21kworker/u8:119:56:041
951799200,2cyclictest0-21swapper/122:38:041
129342200,1sleep0101ktimersoftd/022:04:070
951899190,17cyclictest0-21swapper/221:10:112
9517991916,2cyclictest5804-21kworker/u8:220:46:041
9517991916,2cyclictest31980-21kworker/u8:020:20:011
9517991916,2cyclictest25873-21kworker/u8:219:23:041
951799190,2cyclictest0-21swapper/123:39:051
951799190,2cyclictest0-21swapper/122:32:041
951799190,2cyclictest0-21swapper/121:32:031
951799190,2cyclictest0-21swapper/120:27:041
951799190,18cyclictest0-21swapper/122:57:041
951799190,16cyclictest0-21swapper/123:09:041
951799190,15cyclictest0-21swapper/120:38:041
951699192,12cyclictest0-21swapper/019:25:010
951699190,2cyclictest0-21swapper/022:30:120
951699190,2cyclictest0-21swapper/020:15:110
9517991815,2cyclictest25873-21kworker/u8:219:45:041
9517991815,2cyclictest23855-21kworker/u8:021:11:041
951799180,2cyclictest0-21swapper/123:28:051
951799180,2cyclictest0-21swapper/122:07:041
9516991814,2cyclictest22150irq/25-ahci[00022:25:110
9516991814,2cyclictest22150irq/25-ahci[00022:25:110
9517991714,2cyclictest23855-21kworker/u8:021:07:041
951799170,6cyclictest0-21swapper/123:32:001
951799170,3cyclictest0-21swapper/119:29:041
951799170,16cyclictest0-21swapper/120:52:051
951799170,12cyclictest0-21swapper/119:12:041
951699171,14cyclictest0-21swapper/021:35:140
57292170,1sleep20-21swapper/223:38:202
951999161,13cyclictest0-21swapper/319:46:023
951799160,12cyclictest0-21swapper/120:08:041
951699161,13cyclictest5798-21ssh00:13:090
951999153,7cyclictest19303-21ssh22:45:013
951999151,12cyclictest0-21swapper/321:55:573
9519991510,3cyclictest0-21swapper/322:58:063
951999150,13cyclictest13647-21sh21:30:183
9518991511,2cyclictest0-21swapper/223:44:302
951899151,12cyclictest0-21swapper/223:10:172
951899150,3cyclictest25573-21diskmemload00:35:122
951899150,2cyclictest0-21swapper/222:10:112
951799150,2cyclictest0-21swapper/120:43:041
951799150,2cyclictest0-21swapper/119:44:031
951799150,2cyclictest0-21swapper/119:33:041
951799150,13cyclictest0-21swapper/100:36:051
9516991512,2cyclictest0-21swapper/022:15:030
951699151,12cyclictest27349-21ssh22:52:510
951699151,12cyclictest17136-21ssh22:41:360
951699151,12cyclictest0-21swapper/023:42:010
9516991510,3cyclictest21747-21ssh22:13:040
9516991510,3cyclictest14483-21ssh22:39:560
951699150,3cyclictest0-21swapper/023:25:130
951699150,13cyclictest3649-21snmpd23:56:040
951699150,13cyclictest0-21swapper/023:04:350
951999142,6cyclictest0-21swapper/320:44:593
951999141,4cyclictest0-21swapper/319:50:583
9519991410,2cyclictest0-21swapper/322:08:383
951999140,2cyclictest0-21swapper/323:10:163
951999140,12cyclictest25573-21diskmemload23:25:113
951999140,12cyclictest25573-21diskmemload22:35:193
951999140,12cyclictest0-21swapper/323:03:133
951999140,12cyclictest0-21swapper/321:18:323
951999140,12cyclictest0-21swapper/300:02:523
951899149,3cyclictest17025-21ssh21:34:522
951899149,3cyclictest10205-21ssh00:17:402
9518991410,2cyclictest0-21swapper/222:00:142
951899140,13cyclictest0-21swapper/200:28:012
951899140,12cyclictest0-21swapper/222:51:222
951899140,12cyclictest0-21swapper/222:15:542
951799149,3cyclictest0-21swapper/121:26:021
9517991411,2cyclictest23855-21kworker/u8:021:50:041
951699149,3cyclictest2849-21rs:main0
951699141,3cyclictest0-21swapper/019:30:080
9516991410,2cyclictest14807-21ssh00:22:340
951699140,2cyclictest0-21swapper/021:54:240
951699140,12cyclictest4428-21ssh21:20:380
951699140,12cyclictest22548-21ssh23:21:020
951699140,12cyclictest14706-21ssh21:31:090
951699140,12cyclictest0-21swapper/023:52:190
951699140,12cyclictest0-21swapper/023:36:100
951699140,12cyclictest0-21swapper/022:05:110
951699140,12cyclictest0-21swapper/020:45:290
83642140,2sleep00-21swapper/000:15:230
951999139,2cyclictest0-21swapper/300:15:503
951999132,6cyclictest25573-21diskmemload00:25:003
951999132,6cyclictest0-21swapper/323:35:003
951999132,6cyclictest0-21swapper/319:30:003
9519991310,2cyclictest0-21swapper/323:47:123
9519991310,2cyclictest0-21swapper/323:21:013
9519991310,2cyclictest0-21swapper/322:47:593
9519991310,2cyclictest0-21swapper/320:15:593
9519991310,2cyclictest0-21swapper/300:31:033
951999130,3cyclictest19548-21ssh23:53:013
951999130,2cyclictest13165-21ssh22:04:283
951999130,2cyclictest0-21swapper/323:41:113
951999130,2cyclictest0-21swapper/319:10:183
951999130,12cyclictest0-21swapper/322:30:163
951999130,12cyclictest0-21swapper/321:35:163
951999130,12cyclictest0-21swapper/321:26:043
951999130,12cyclictest0-21swapper/320:11:013
951999130,12cyclictest0-21swapper/319:15:113
951999130,11cyclictest3542-21ssh23:35:383
951999130,11cyclictest0-21swapper/321:48:423
951899138,3cyclictest32355-21taskset23:31:432
951899138,3cyclictest28394-21df_inode22:20:122
951899138,3cyclictest23511-21sendmail-mta19:43:492
9518991310,2cyclictest31424-21copy21:50:022
9518991310,2cyclictest19258-21ssh23:52:332
9518991310,2cyclictest0-21swapper/223:07:372
9518991310,2cyclictest0-21swapper/221:56:392
9518991310,2cyclictest0-21swapper/221:36:042
9518991310,2cyclictest0-21swapper/200:33:122
951899130,2cyclictest0-21swapper/223:20:592
951899130,2cyclictest0-21swapper/223:17:412
951899130,2cyclictest0-21swapper/222:56:412
951899130,2cyclictest0-21swapper/221:47:102
951899130,2cyclictest0-21swapper/221:18:552
951899130,12cyclictest0-21swapper/222:05:152
951899130,12cyclictest0-21swapper/220:35:162
951899130,12cyclictest0-21swapper/200:20:042
951899130,11cyclictest2499-21ssh22:26:262
951899130,11cyclictest2499-21ssh22:26:262
951799130,2cyclictest0-21swapper/119:53:041
951699139,2cyclictest0-21swapper/020:05:140
951699132,6cyclictest0-21swapper/020:40:000
951699132,6cyclictest0-21swapper/020:25:000
951699132,6cyclictest0-21swapper/019:45:010
951699132,5cyclictest0-21swapper/019:55:010
9516991310,2cyclictest25573-21diskmemload21:49:270
9516991310,2cyclictest22150irq/25-ahci[00023:05:060
9516991310,2cyclictest0-21swapper/023:47:350
9516991310,2cyclictest0-21swapper/022:20:160
9516991310,2cyclictest0-21swapper/021:40:320
9516991310,2cyclictest0-21swapper/021:28:300
9516991310,2cyclictest0-21swapper/021:10:380
9516991310,2cyclictest0-21swapper/020:55:580
9516991310,2cyclictest0-21swapper/000:03:020
951699130,2cyclictest25573-21diskmemload21:55:310
951699130,2cyclictest0-21swapper/023:17:430
951699130,2cyclictest0-21swapper/023:11:030
951699130,12cyclictest0-21swapper/000:36:300
951699130,12cyclictest0-21swapper/000:34:500
951699130,12cyclictest0-21swapper/000:07:450
322752130,2sleep00-21swapper/022:58:030
198562130,2sleep320079-21cpuspeed_turbos19:35:103
951999129,2cyclictest0-21swapper/323:15:003
951999129,2cyclictest0-21swapper/323:06:033
951999129,2cyclictest0-21swapper/322:25:203
951999129,2cyclictest0-21swapper/322:25:193
951999129,2cyclictest0-21swapper/321:50:053
951999129,2cyclictest0-21swapper/319:55:143
951999129,2cyclictest0-21swapper/319:21:023
951999122,6cyclictest0-21swapper/300:04:593
951999122,5cyclictest0-21swapper/320:50:003
951999121,5cyclictest0-21swapper/321:05:003
951999120,1cyclictest0-21swapper/320:05:143
951999120,11cyclictest0-21swapper/322:24:013
951999120,11cyclictest0-21swapper/322:15:573
951999120,11cyclictest0-21swapper/322:10:163
951999120,11cyclictest0-21swapper/321:23:593
951999120,11cyclictest0-21swapper/320:30:153
951999120,11cyclictest0-21swapper/300:26:503
951999120,10cyclictest25573-21diskmemload21:40:063
951899129,2cyclictest0-21swapper/223:04:412
951899129,2cyclictest0-21swapper/222:44:122
951899129,2cyclictest0-21swapper/222:31:042
951899129,2cyclictest0-21swapper/200:06:112
951899122,7cyclictest0-21swapper/222:37:592
951899120,2cyclictest0-21swapper/223:45:262
951899120,2cyclictest0-21swapper/221:41:032
951899120,2cyclictest0-21swapper/221:25:202
951899120,2cyclictest0-21swapper/220:45:142
951899120,2cyclictest0-21swapper/220:00:182
951899120,11cyclictest0-21swapper/223:56:212
951899120,11cyclictest0-21swapper/220:56:032
951899120,11cyclictest0-21swapper/200:14:042
951899120,11cyclictest0-21swapper/200:00:172
951699129,2cyclictest0-21swapper/023:30:270
951699129,2cyclictest0-21swapper/020:52:050
951699129,2cyclictest0-21swapper/019:35:150
951699122,7cyclictest0-21swapper/020:29:020
951699121,9cyclictest0-21swapper/019:45:150
951699120,2cyclictest0-21swapper/021:15:040
951699120,11cyclictest0-21swapper/021:06:060
268132120,1sleep20-21swapper/223:25:592
951999118,2cyclictest0-21swapper/322:50:193
951999118,2cyclictest0-21swapper/321:14:343
951999118,2cyclictest0-21swapper/320:20:123
951999116,3cyclictest7110-21latency_hist00:15:003
951999110,9cyclictest21555-21tr21:00:003
951999110,6cyclictest0-21swapper/320:30:003
951999110,2cyclictest0-21swapper/300:35:003
951899118,2cyclictest0-21swapper/220:06:022
951899112,6cyclictest0-21swapper/220:21:022
951899111,5cyclictest0-21swapper/219:20:002
951699118,2cyclictest0-21swapper/019:15:210
951699112,6cyclictest0-21swapper/020:12:590
951699111,8cyclictest9734-21apt-get19:10:110
951699111,8cyclictest16203-21grep19:25:160
951699111,3cyclictest0-21swapper/020:30:120
951699110,10cyclictest0-21swapper/020:36:060
951999107,2cyclictest0-21swapper/320:37:093
951999100,9cyclictest0-21swapper/319:44:073
951899107,2cyclictest0-21swapper/220:34:132
951899106,2cyclictest0-21swapper/221:05:282
951899104,3cyclictest274-21jbd2/sda1-819:35:412
951899101,5cyclictest0-21swapper/219:30:012
951899100,5cyclictest0-21swapper/219:15:012
951899100,2cyclictest0-21swapper/220:27:532
951899100,2cyclictest0-21swapper/219:48:232
951699107,2cyclictest0-21swapper/021:00:140
951699105,3cyclictest30590-21sort20:00:160
951699100,2cyclictest0-21swapper/019:50:060
95199996,2cyclictest0-21swapper/321:05:133
95199994,3cyclictest27524-21sendmail-mta20:00:023
95199994,3cyclictest18734-21processes20:50:193
95189996,2cyclictest0-21swapper/220:18:212
95189994,3cyclictest22065-21cpuspeed_turbos21:00:122
95189994,3cyclictest1430-21apt-get20:10:112
95189994,3cyclictest11357-21sendmail-mta20:40:172
95189992,6cyclictest0-21swapper/220:50:252
95199984,2cyclictest0-21swapper/319:30:103
95189983,3cyclictest0-21swapper/219:30:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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