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2026-06-05 - 20:09

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 highest latencies:
System rack9slot4s (updated Fri Jun 05, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
261829911331101,27cyclictest26618-21diskstats07:25:151
261819911261095,28cyclictest0-21swapper/007:25:140
257452628580,32sleep00-21swapper/007:21:010
257402587540,31sleep10-21swapper/107:20:581
1974121160,5sleep0111rcuc/008:30:150
226022450,11sleep12618299cyclictest10:04:591
151772410,3sleep0111rcuc/012:35:200
26181993817,5cyclictest12064-21iostat_ios09:35:200
304532370,5sleep02618199cyclictest10:25:110
2618199361,21cyclictest9718-21runrttasks12:20:220
2618199359,13cyclictest3286-21runrttasks08:29:010
324632341,29sleep132168-21/usr/sbin/munin10:30:151
322242341,29sleep032371-21cpuspeed_turbos10:30:110
239102341,4sleep123944-21ntp_states08:40:231
17802341,4sleep11793-21turbostat09:09:591
2618199332,19cyclictest0-21swapper/008:50:100
2618199321,9cyclictest10240-21diskstats08:05:150
26181993210,7cyclictest12140-21python11:00:280
10322321,5sleep10-21swapper/111:59:441
80412312,4sleep10-21swapper/110:50:231
56482311,6sleep00-21swapper/009:19:580
38902311,5sleep00-21swapper/007:47:310
314192311,5sleep00-21swapper/011:52:390
300292311,4sleep130129-21users07:30:281
2618299316,5cyclictest8582fschecks_time07:40:161
2618199315,9cyclictest7647-21diskstats10:50:150
140962311,5sleep00-21swapper/012:32:180
95262301,5sleep10-21swapper/108:02:231
84002301,5sleep00-21swapper/012:16:500
64082301,5sleep10-21swapper/112:10:371
299722301,5sleep10-21swapper/110:23:241
2618199301,26cyclictest0-21swapper/008:35:110
26181993012,5cyclictest23087-21fschecks_count10:05:150
2618199301,18cyclictest0-21swapper/012:40:050
26181993011,6cyclictest25226-21iostat_ios10:10:170
26181993010,6cyclictest7881-21cron08:00:000
189482301,25sleep118967-21cut11:20:151
158662301,5sleep10-21swapper/112:36:131
122602301,5sleep10-21swapper/112:27:421
67862291,5sleep00-21swapper/010:45:520
35762291,5sleep00-21swapper/009:12:580
35302291,5sleep10-21swapper/109:12:301
319912291,5sleep00-21swapper/009:01:100
30452291,5sleep10-21swapper/112:04:491
302202291,5sleep00-21swapper/007:31:160
263332291,5sleep10-21swapper/108:46:051
26182992919,6cyclictest28271-21cpuspeed_turbos11:45:131
2618199292,14cyclictest11565-21gdbus12:02:170
2618199291,6cyclictest0-21swapper/012:10:310
2618199291,15cyclictest8226-21/usr/sbin/munin09:25:180
26181992911,5cyclictest5532-21sed07:50:300
2618199291,14cyclictest611-21/usr/sbin/munin11:55:280
255762291,5sleep00-21swapper/011:35:440
246642291,5sleep00-21swapper/008:43:190
220492291,5sleep10-21swapper/111:28:031
218212291,5sleep00-21swapper/011:25:400
216152291,5sleep00-21swapper/012:52:020
197192291,5sleep00-21swapper/012:46:460
185652291,5sleep10-21swapper/109:52:211
165722291,5sleep00-21swapper/009:46:060
121622291,5sleep00-21swapper/012:26:420
110482291,5sleep10-21swapper/109:32:261
107912291,5sleep00-21swapper/010:58:310
59242281,5sleep10-21swapper/107:54:101
53062281,5sleep10-21swapper/109:16:271
314782281,5sleep10-21swapper/111:53:161
279622281,5sleep00-21swapper/010:17:150
2618299283,9cyclictest7817-21ntp_states12:15:231
26182992819,5cyclictest12905-21wc08:10:271
26182992818,6cyclictest4262-21swap12:05:271
26182992818,6cyclictest16543-21sendmail_mailqu08:20:271
2618299281,23cyclictest18923-21irqstats12:45:201
2618199281,23cyclictest1917-21taskset07:42:370
26181992811,5cyclictest26572-21fschecks_time11:40:140
2618199281,14cyclictest20069-21taskset11:21:570
26181992810,6cyclictest29031-21df08:55:120
26181992810,5cyclictest352-21diskstats09:05:150
259302281,5sleep10-21swapper/111:39:251
238142281,5sleep00-21swapper/011:31:570
186392281,5sleep00-21swapper/009:53:060
181982281,5sleep00-21swapper/011:17:130
181982281,5sleep00-21swapper/011:17:120
170972281,5sleep00-21swapper/008:22:500
152112281,5sleep00-21swapper/008:17:570
149672281,5sleep00-21swapper/009:43:570
143482281,5sleep10-21swapper/112:34:571
143032281,4sleep00-21swapper/011:05:460
129212281,5sleep10-21swapper/109:37:221
107712281,4sleep110775-21ntp_states08:05:261
76672271,5sleep10-21swapper/107:57:471
70792271,5sleep10-21swapper/110:48:541
49782271,5sleep10-21swapper/110:41:341
48812271,5sleep00-21swapper/010:40:330
320422271,5sleep10-21swapper/109:01:441
30152271,5sleep10-21swapper/110:36:011
294762271,4sleep00-21swapper/011:47:000
284122271,5sleep10-21swapper/108:53:121
278552271,5sleep10-21swapper/111:44:401
2618299277,16cyclictest0-21swapper/111:12:011
26182992721,4cyclictest22-21ksoftirqd/109:45:291
2618199276,12cyclictest0-21swapper/012:05:300
2618199274,8cyclictest2200-21iostat_ios10:35:210
2618199272,21cyclictest31083-21diskstats07:35:170
2618199271,3cyclictest0-21swapper/008:45:110
2618199271,14cyclictest21178-21diskstats10:00:150
109392271,5sleep00-21swapper/009:31:160
90362261,5sleep10-21swapper/109:26:001
281982261,4sleep10-21swapper/110:19:421
2618299269,4cyclictest0-21swapper/112:20:161
2618299263,17cyclictest22489-21users08:35:311
26182992616,6cyclictest22-21ksoftirqd/110:07:401
26182992611,11cyclictest0-21swapper/111:31:161
2618199261,13cyclictest19281-21diskstats09:55:130
2618199261,11cyclictest6344-21wget09:20:170
205472261,5sleep10-21swapper/109:58:281
167392261,5sleep10-21swapper/111:15:031
167392261,5sleep10-21swapper/111:15:021
153702261,5sleep10-21swapper/108:19:351
149902261,5sleep10-21swapper/109:44:101
106062261,5sleep10-21swapper/110:56:341
40932251,5sleep10-21swapper/107:49:371
2618299258,13cyclictest3286-21runrttasks09:22:311
26182992517,5cyclictest22-21ksoftirqd/111:09:101
26182992517,5cyclictest17822-21fschecks_count08:25:161
26182992515,6cyclictest12249-21cat11:00:291
2618199256,11cyclictest0-21swapper/008:10:020
2618199254,6cyclictest29010-21seq10:20:190
2618199251,15cyclictest0-21swapper/008:02:320
2618299245,14cyclictest3286-21runrttasks08:55:141
26182992415,6cyclictest22-21ksoftirqd/108:33:521
26182992414,6cyclictest25670-21sort10:10:251
26182992414,6cyclictest17667-21unixbench_singl12:40:291
2618299237,12cyclictest0-21swapper/107:35:311
2618299232,7cyclictest20489-21diskstats12:50:121
26182992313,6cyclictest30507-21cut10:25:121
26181992313,6cyclictest3-21ksoftirqd/011:13:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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