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2026-06-21 - 09:27

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 the highest latencies:
System rack3slot6s.osadl.org (updated Sun Jun 21, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
160872117106,6sleep30-21swapper/319:07:223
15995211288,19sleep00-21swapper/019:06:110
16221210990,13sleep20-21swapper/219:09:052
16148210787,14sleep10-21swapper/119:08:091
137352800,4sleep011-21rcuc/023:10:300
38862780,0sleep00-21swapper/021:15:140
249382730,0sleep30-21swapper/322:48:203
112152720,1sleep1221ktimersoftd/121:58:321
152752700,1sleep1221ktimersoftd/120:30:001
1632099290,2cyclictest0-21swapper/121:10:111
1632099240,2cyclictest0-21swapper/123:25:021
113242240,0sleep30-21swapper/323:08:333
1632099230,21cyclictest0-21swapper/120:35:101
186322220,1sleep030914-21diskmemload21:31:020
186322220,1sleep030914-21diskmemload21:31:010
1632299220,2cyclictest0-21swapper/322:00:123
253302210,0sleep10-21swapper/122:13:591
40612200,1sleep10-21swapper/120:00:151
1632099204,14cyclictest0-21swapper/119:35:291
1632099201,17cyclictest0-21swapper/123:05:111
255772190,0sleep00-21swapper/022:49:250
1632099193,14cyclictest0-21swapper/123:51:471
1632099183,14cyclictest0-21swapper/122:36:001
1632099183,13cyclictest0-21swapper/123:59:351
1632099183,13cyclictest0-21swapper/123:34:041
1632099183,13cyclictest0-21swapper/123:03:501
1632099182,14cyclictest0-21swapper/121:40:191
224402170,0sleep30-21swapper/319:24:593
182562170,1sleep318259-21sed23:50:183
16321991714,2cyclictest13546-21kworker/u8:222:03:042
16321991713,3cyclictest28722-21kworker/u8:100:06:052
16320991713,3cyclictest0-21swapper/122:15:121
16322991612,3cyclictest1449-21ssh21:12:133
16322991611,3cyclictest22091-21ssh00:30:123
1632199161,3cyclictest26257-21apt-get23:25:042
16321991613,2cyclictest19156-21kworker/u8:022:11:042
16321991613,2cyclictest19156-21kworker/u8:022:08:042
1632099162,13cyclictest0-21swapper/121:20:491
16320991613,2cyclictest0-21swapper/122:25:161
16320991612,3cyclictest0-21swapper/100:20:091
16320991611,4cyclictest0-21swapper/123:10:071
1632099161,13cyclictest0-21swapper/123:22:281
1632099161,13cyclictest0-21swapper/122:00:421
1632099161,13cyclictest0-21swapper/121:26:121
16322991512,2cyclictest11890-21kworker/u8:023:16:053
16322991511,3cyclictest2930-21ssh00:09:443
16322991510,3cyclictest18108-21ssh21:30:203
16322991510,3cyclictest18108-21ssh21:30:193
16322991510,3cyclictest0-21swapper/322:55:003
16321991512,2cyclictest6750-21kworker/u8:221:52:052
16321991512,2cyclictest28722-21kworker/u8:100:04:042
16321991512,2cyclictest19156-21kworker/u8:022:55:042
16321991512,2cyclictest14063-21kworker/u8:121:30:052
16321991512,2cyclictest14063-21kworker/u8:121:30:042
1632199150,2cyclictest0-21swapper/221:29:042
1632099159,4cyclictest0-21swapper/121:06:011
1632099159,4cyclictest0-21swapper/100:31:031
1632099154,9cyclictest0-21swapper/100:00:111
1632099152,2cyclictest0-21swapper/123:47:091
1632099152,11cyclictest0-21swapper/119:10:111
1632099152,11cyclictest0-21swapper/100:05:441
1632099151,3cyclictest0-21swapper/100:16:471
16320991512,2cyclictest0-21swapper/120:30:171
1632099151,13cyclictest0-21swapper/122:24:081
1632099151,13cyclictest0-21swapper/121:38:321
1632099151,12cyclictest19092-21sh22:41:191
16320991510,3cyclictest0-21swapper/122:57:051
16320991510,3cyclictest0-21swapper/119:31:021
1632099150,3cyclictest0-21swapper/119:50:171
1632099150,13cyclictest0-21swapper/120:20:131
1632099150,13cyclictest0-21swapper/119:40:111
16319991512,2cyclictest0-21swapper/022:20:160
16322991411,2cyclictest6838-21kworker/u8:021:58:043
16322991411,2cyclictest0-21swapper/300:20:163
16322991410,3cyclictest29369-21ssh00:37:113
16322991410,3cyclictest18452-21ssh22:40:543
1632299140,13cyclictest0-21swapper/322:15:133
16321991411,2cyclictest19156-21kworker/u8:022:44:052
16321991411,2cyclictest0-21swapper/200:37:572
16321991411,2cyclictest0-21swapper/200:30:072
1632199140,3cyclictest0-21swapper/222:37:322
1632199140,2cyclictest30914-21diskmemload23:05:152
1632199140,2cyclictest0-21swapper/222:16:482
1632199140,13cyclictest30914-21diskmemload00:17:072
1632199140,13cyclictest0-21swapper/221:56:572
1632199140,13cyclictest0-21swapper/220:20:172
1632199140,12cyclictest23453-21ssh23:55:552
1632099149,3cyclictest29097-21cat21:05:001
1632099144,8cyclictest0-21swapper/121:49:101
1632099143,9cyclictest0-21swapper/120:11:001
1632099143,9cyclictest0-21swapper/119:20:161
1632099143,3cyclictest0-21swapper/121:16:591
1632099143,10cyclictest0-21swapper/123:40:391
1632099142,10cyclictest0-21swapper/122:30:201
1632099142,10cyclictest0-21swapper/121:50:131
1632099141,3cyclictest0-21swapper/100:26:051
1632099141,12cyclictest0-21swapper/123:15:581
1632099141,12cyclictest0-21swapper/121:31:431
1632099141,12cyclictest0-21swapper/121:31:421
1632099141,12cyclictest0-21swapper/100:10:261
16320991410,2cyclictest0-21swapper/100:35:331
16319991411,2cyclictest0-21swapper/022:35:160
16319991411,2cyclictest0-21swapper/020:45:170
1631999140,2cyclictest0-21swapper/020:55:170
1631999140,12cyclictest13557-21ssh22:00:210
1631999140,12cyclictest0-21swapper/023:25:020
1631999140,12cyclictest0-21swapper/023:07:390
1631999140,12cyclictest0-21swapper/022:56:020
1631999140,12cyclictest0-21swapper/000:36:590
1632299139,2cyclictest30870-21hddtemp_smartct19:45:133
1632299137,4cyclictest0-21swapper/320:13:583
16322991310,2cyclictest6750-21kworker/u8:221:36:023
16322991310,2cyclictest6113-21kworker/u8:223:03:043
16322991310,2cyclictest17491-21kworker/u8:200:16:053
16322991310,2cyclictest14063-21kworker/u8:121:28:043
16322991310,2cyclictest11890-21kworker/u8:023:13:043
16322991310,2cyclictest0-21swapper/323:59:563
16322991310,2cyclictest0-21swapper/323:42:033
16322991310,2cyclictest0-21swapper/322:13:333
1632299130,2cyclictest0-21swapper/322:24:273
1632299130,2cyclictest0-21swapper/322:07:173
1632299130,2cyclictest0-21swapper/320:25:163
1632299130,12cyclictest0-21swapper/321:00:103
1632299130,11cyclictest0-21swapper/322:30:063
16321991310,2cyclictest8450-21kworker/u8:120:18:052
16321991310,2cyclictest741-21kworker/u8:220:29:042
16321991310,2cyclictest31157-21ssh21:10:032
16321991310,2cyclictest12661-21kworker/u8:219:16:052
16321991310,2cyclictest0-21swapper/222:32:262
16321991310,2cyclictest0-21swapper/222:21:502
16321991310,2cyclictest0-21swapper/221:46:072
16321991310,2cyclictest0-21swapper/221:40:192
16321991310,2cyclictest0-21swapper/221:23:352
16321991310,2cyclictest0-21swapper/221:16:292
1632199130,2cyclictest30914-21diskmemload00:20:152
1632199130,2cyclictest0-21swapper/223:40:122
1632199130,2cyclictest0-21swapper/223:37:242
1632199130,2cyclictest0-21swapper/223:15:172
1632199130,2cyclictest0-21swapper/223:03:202
1632199130,2cyclictest0-21swapper/222:48:182
1632199130,2cyclictest0-21swapper/220:10:132
1632199130,12cyclictest29763-21ssh22:53:412
1632199130,12cyclictest0-21swapper/223:50:172
1632199130,12cyclictest0-21swapper/223:45:552
1632199130,12cyclictest0-21swapper/223:30:142
1632199130,12cyclictest0-21swapper/223:20:142
1632199130,12cyclictest0-21swapper/223:10:092
1632199130,12cyclictest0-21swapper/222:25:142
1632199130,12cyclictest0-21swapper/221:35:132
1632199130,12cyclictest0-21swapper/220:50:132
1632199130,12cyclictest0-21swapper/220:36:002
1632199130,12cyclictest0-21swapper/219:55:502
1632199130,12cyclictest0-21swapper/219:26:032
1632199130,12cyclictest0-21swapper/200:25:122
1632099133,9cyclictest0-21swapper/120:55:501
1632099131,11cyclictest0-21swapper/122:07:391
1632099130,2cyclictest0-21swapper/122:50:191
1632099130,12cyclictest0-21swapper/119:55:161
16319991310,2cyclictest30914-21diskmemload22:25:480
16319991310,2cyclictest0-21swapper/023:54:590
16319991310,2cyclictest0-21swapper/023:44:400
16319991310,2cyclictest0-21swapper/023:37:520
16319991310,2cyclictest0-21swapper/022:32:200
16319991310,2cyclictest0-21swapper/022:06:360
16319991310,2cyclictest0-21swapper/021:50:180
16319991310,2cyclictest0-21swapper/021:40:460
16319991310,2cyclictest0-21swapper/021:27:210
16319991310,2cyclictest0-21swapper/000:21:030
1631999130,3cyclictest24293-21ssh22:12:180
1631999130,2cyclictest24976-21ssh00:32:360
1631999130,2cyclictest0-21swapper/022:15:150
1631999130,2cyclictest0-21swapper/000:06:060
1631999130,12cyclictest0-21swapper/023:17:360
1631999130,12cyclictest0-21swapper/000:00:160
1631999130,11cyclictest741-21kworker/u8:220:10:040
1632299129,2cyclictest741-21kworker/u8:219:57:043
1632299129,2cyclictest6750-21kworker/u8:221:20:053
1632299129,2cyclictest28722-21kworker/u8:100:10:043
1632299129,2cyclictest26138-21kworker/u8:221:06:023
1632299129,2cyclictest20615-21kworker/u8:223:25:043
1632299129,2cyclictest12661-21kworker/u8:219:13:043
1632299129,2cyclictest0-21swapper/323:45:153
1632299129,2cyclictest0-21swapper/322:55:363
1632299129,2cyclictest0-21swapper/320:20:123
1632299129,2cyclictest0-21swapper/319:40:553
1632299128,2cyclictest0-21swapper/322:35:123
1632299123,6cyclictest3728-21runrttasks19:31:003
1632299122,7cyclictest0-21swapper/320:33:593
1632299122,6cyclictest0-21swapper/321:41:013
1632299122,6cyclictest0-21swapper/320:56:013
1632299121,9cyclictest19243-21tr20:40:003
1632299120,2cyclictest0-21swapper/323:30:163
1632299120,2cyclictest0-21swapper/320:15:303
1632299120,11cyclictest17321-21ssh00:25:033
1632299120,11cyclictest0-21swapper/320:00:163
1632299120,11cyclictest0-21swapper/319:35:113
1632299120,11cyclictest0-21swapper/300:00:163
1632299120,10cyclictest0-21swapper/322:25:443
1632199129,2cyclictest741-21kworker/u8:220:41:052
1632199129,2cyclictest741-21kworker/u8:219:53:052
1632199129,2cyclictest4758-21ssh00:10:322
1632199129,2cyclictest0-21swapper/219:10:172
1632099127,3cyclictest0-21swapper/120:15:151
1632099124,6cyclictest0-21swapper/123:35:011
1632099124,6cyclictest0-21swapper/120:50:111
1632099121,9cyclictest0-21swapper/122:45:171
1632099121,9cyclictest0-21swapper/120:40:111
1632099121,3cyclictest30291-21munin-node1
1632099120,10cyclictest21251-21cron20:45:011
1632099120,10cyclictest0-21swapper/119:25:491
1632099120,10cyclictest0-21swapper/119:15:131
1631999129,2cyclictest0-21swapper/023:56:560
1631999129,2cyclictest0-21swapper/023:45:180
1631999129,2cyclictest0-21swapper/023:30:040
1631999129,2cyclictest0-21swapper/023:20:550
1631999129,2cyclictest0-21swapper/022:50:150
1631999129,2cyclictest0-21swapper/022:40:460
1631999129,2cyclictest0-21swapper/021:56:040
1631999129,2cyclictest0-21swapper/021:45:010
1631999129,2cyclictest0-21swapper/021:21:280
1631999129,2cyclictest0-21swapper/020:35:130
1631999120,2cyclictest0-21swapper/023:00:040
1631999120,2cyclictest0-21swapper/000:15:010
1631999120,2cyclictest0-21swapper/000:10:240
1631999120,11cyclictest0-21swapper/021:36:110
1631999120,11cyclictest0-21swapper/021:10:170
1631999120,11cyclictest0-21swapper/020:31:010
1631999120,11cyclictest0-21swapper/019:45:130
1631999120,11cyclictest0-21swapper/019:35:190
1631999120,11cyclictest0-21swapper/019:20:040
188882110,1sleep00-21swapper/000:25:580
1632299118,2cyclictest31159-21kworker/u8:021:15:043
1632299118,2cyclictest18670-21kworker/u8:119:52:053
1632299118,2cyclictest0-21swapper/321:46:223
1632299112,6cyclictest0-21swapper/320:52:583
1632299110,2cyclictest0-21swapper/323:38:293
1632299110,2cyclictest0-21swapper/323:20:523
1632299110,10cyclictest0-21swapper/321:50:223
1632199118,2cyclictest8450-21kworker/u8:120:47:042
1632199118,2cyclictest23147-21kworker/u8:020:55:052
1632199118,2cyclictest18670-21kworker/u8:119:47:042
1632199118,2cyclictest12661-21kworker/u8:219:34:042
1632199118,2cyclictest12661-21kworker/u8:219:22:052
1632199118,2cyclictest0-21swapper/220:30:592
1632099111,8cyclictest5362-21apt-get20:05:101
1631999118,2cyclictest0-21swapper/020:25:180
1631999118,2cyclictest0-21swapper/019:31:030
1632299107,2cyclictest741-21kworker/u8:220:05:053
1632299106,3cyclictest0-21swapper/320:41:033
1632299100,7cyclictest0-21swapper/319:26:023
1632199107,2cyclictest26638-21kworker/u8:020:02:012
1632199107,2cyclictest0-21swapper/221:05:142
1631999107,2cyclictest0-21swapper/019:56:050
1631999107,2cyclictest0-21swapper/019:10:160
1631999105,3cyclictest29415-21cat19:40:150
1631999100,9cyclictest0-21swapper/021:03:230
130662100,2sleep00-21swapper/020:23:240
163229990,6cyclictest0-21swapper/320:47:583
163219996,2cyclictest5749-21df_inode20:05:132
163219996,2cyclictest0-21swapper/221:01:012
163219996,2cyclictest0-21swapper/219:35:172
163219994,3cyclictest28754-21aten2.4_r3power19:40:112
163199996,2cyclictest0-21swapper/019:15:170
163199994,3cyclictest32300-21df19:50:130
163199994,3cyclictest29352-21sort21:05:110
163199994,3cyclictest23109-21aten2.4-expect20:50:110
163199990,8cyclictest741-21kworker/u8:220:42:050
18537280,1sleep30-21swapper/319:15:123
163199985,2cyclictest12661-21kworker/u8:219:25:040
163199985,2cyclictest0-21swapper/020:15:440
163199983,3cyclictest5982-21if_err_eth020:05:150
163199983,3cyclictest3826-21sh20:00:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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