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2026-05-14 - 00:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 792 highest latencies:
System rack9slot4s (updated Wed May 13, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
118519911971154,38cyclictest12286-21df_inode07:25:130
118529911411131,7cyclictest0-21swapper/107:25:121
115472770686,69sleep10-21swapper/107:22:251
115472770686,69sleep10-21swapper/107:22:251
114942562517,30sleep00-21swapper/007:21:510
114942562517,30sleep00-21swapper/007:21:510
22152700,5sleep0111rcuc/008:20:290
87922630,6sleep18787-21strings11:30:221
263472440,4sleep01185199cyclictest08:00:140
263472440,4sleep01185199cyclictest08:00:130
213172430,4sleep01185199cyclictest09:10:290
308962420,10sleep01185199cyclictest12:30:110
180612351,4sleep018132-21memory11:55:220
153542350,2sleep015352-21tr07:30:240
108742350,3sleep10-21swapper/110:10:211
315192341,29sleep131566-21iostat11:05:191
161572341,4sleep116164-21iostat_ios11:50:181
11851993410,8cyclictest0-21swapper/009:54:380
1185199335,5cyclictest0-21swapper/008:15:000
1185299328,5cyclictest188142mailstats10:30:271
11851993216,13cyclictest3-21ksoftirqd/009:26:520
277152311,5sleep10-21swapper/108:04:301
277152311,5sleep10-21swapper/108:04:301
265742311,3sleep10-21swapper/109:25:251
200072311,5sleep00-21swapper/007:44:280
120622311,25sleep112098-21df_inode11:40:131
64422301,5sleep10-21swapper/108:32:191
319952301,5sleep10-21swapper/112:31:341
241532301,5sleep10-21swapper/107:55:051
224162300,8sleep11185299cyclictest09:15:181
16772301,5sleep10-21swapper/112:39:141
143882301,5sleep10-21swapper/108:55:031
122182301,5sleep10-21swapper/108:48:371
1185299303,20cyclictest12818-21diskstats08:50:151
11852993020,6cyclictest3777-21basename12:45:011
1185199306,10cyclictest11565-21gdbus10:25:000
11851993011,6cyclictest21136-21runrttasks10:37:170
69752291,5sleep10-21swapper/108:35:111
5332291,5sleep00-21swapper/009:44:260
295132291,5sleep00-21swapper/008:08:420
26342291,5sleep10-21swapper/108:22:361
258532291,5sleep00-21swapper/007:59:480
245782291,5sleep10-21swapper/112:12:441
238172291,5sleep00-21swapper/009:20:050
230582291,5sleep00-21swapper/010:42:370
216762291,5sleep10-21swapper/107:47:181
210312291,5sleep10-21swapper/112:04:501
206312291,5sleep00-21swapper/012:00:390
197222291,5sleep00-21swapper/009:08:210
18622291,5sleep10-21swapper/111:12:271
153012291,5sleep10-21swapper/111:48:581
137202291,5sleep00-21swapper/010:18:260
1185299294,18cyclictest20371-21memory10:35:201
11852992921,5cyclictest32149-21fschecks_time08:15:161
11852992920,5cyclictest24072-21uname10:45:211
11852992919,6cyclictest5342-21cat09:55:221
11852992913,14cyclictest0-21swapper/112:29:591
1185299291,23cyclictest30409-21irqstats08:10:211
11852992912,13cyclictest0-21swapper/107:40:261
1185199299,6cyclictest7994-21ls08:35:260
1185199296,10cyclictest0-21swapper/009:38:200
1185199294,20cyclictest4631-21basename09:55:110
1185199292,13cyclictest0-21swapper/011:00:290
11851992913,13cyclictest3-21ksoftirqd/011:14:150
1185199291,15cyclictest16446-21/usr/sbin/munin11:50:240
100772291,4sleep10-21swapper/108:40:561
93512281,5sleep00-21swapper/011:30:560
72312281,5sleep00-21swapper/012:51:480
55712281,5sleep10-21swapper/112:49:011
5442281,5sleep00-21swapper/008:15:590
44112280,5sleep01185199cyclictest12:45:150
37932281,5sleep10-21swapper/111:16:501
327022281,5sleep10-21swapper/109:41:221
291552281,4sleep10-21swapper/109:33:441
282212281,5sleep10-21swapper/112:21:201
281572281,5sleep00-21swapper/012:20:410
266562281,5sleep00-21swapper/012:19:490
264142281,5sleep10-21swapper/112:17:171
233662280,4sleep01185199cyclictest07:50:300
231582281,5sleep10-21swapper/110:43:411
228102281,5sleep10-21swapper/112:08:501
216222281,4sleep10-21swapper/109:13:351
198282281,5sleep10-21swapper/109:09:291
187892281,5sleep10-21swapper/111:56:121
179322281,5sleep10-21swapper/109:04:161
176002281,5sleep00-21swapper/009:00:480
172552281,4sleep00-21swapper/010:25:580
16302281,5sleep00-21swapper/012:38:450
159212281,5sleep10-21swapper/110:25:041
158942281,5sleep10-21swapper/107:31:181
119902281,5sleep00-21swapper/008:46:140
1185299281,23cyclictest1356-21irqstats09:45:201
1185199289,16cyclictest0-21swapper/010:55:130
1185199284,17cyclictest20519-21diskstats07:45:130
1185199281,23cyclictest15002-21irqstats08:55:190
11851992811,4cyclictest0-21swapper/007:35:140
11851992810,5cyclictest28587-21/usr/sbin/munin09:30:270
11851992810,5cyclictest14519-21ntp_states11:45:230
102062281,5sleep00-21swapper/008:42:150
81722271,5sleep00-21swapper/010:04:240
75182271,5sleep10-21swapper/111:26:211
325212271,4sleep00-21swapper/011:08:170
307422271,4sleep10-21swapper/109:35:431
294122271,5sleep10-21swapper/108:07:381
285222271,5sleep10-21swapper/110:55:561
268722271,4sleep10-21swapper/110:53:151
254502271,5sleep10-21swapper/109:24:081
226752271,5sleep00-21swapper/012:07:240
180652271,5sleep10-21swapper/107:39:011
153972271,4sleep10-21swapper/110:21:071
138532271,5sleep00-21swapper/008:51:020
1185299278,6cyclictest2225-21dbus-daemon07:52:361
11852992717,6cyclictest22-21ksoftirqd/110:06:321
1185199271,23cyclictest4120-21sendmail11:20:010
112392271,5sleep00-21swapper/011:36:010
112272271,5sleep10-21swapper/111:35:561
81582261,3sleep10-21swapper/110:04:161
55482261,5sleep10-21swapper/111:20:311
306712261,5sleep10-21swapper/111:03:351
192622261,5sleep00-21swapper/010:32:200
11852992616,6cyclictest22-21ksoftirqd/112:50:111
1185199269,5cyclictest24206-21timerandwakeup12:10:290
1185199265,12cyclictest0-21swapper/012:27:090
1185199264,13cyclictest40250irq/92-i91508:30:130
1185199261,16cyclictest0-21swapper/011:27:490
1185199261,13cyclictest9924-21taskset10:08:040
1185199261,12cyclictest11976-21cpuspeed_turbos11:40:110
11851992610,5cyclictest2427-21runrttasks09:49:160
11851992610,12cyclictest26812-21taskset10:52:390
1185299259,12cyclictest0-21swapper/108:25:181
1185199256,6cyclictest11565-21gdbus11:20:180
1185199253,16cyclictest4133-21python08:25:280
1185199251,15cyclictest0-21swapper/012:40:350
1185199251,12cyclictest11102-21ntp_states10:10:250
1185299242,19cyclictest0-21swapper/109:50:171
1185299242,17cyclictest12843-21memory10:15:201
1185199249,12cyclictest24171-21missed_timers10:45:220
1185199247,13cyclictest22161-21cstates09:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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