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2026-06-14 - 18:13

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 376 highest latencies:
System rack9slot4s (updated Sun Jun 14, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89389911841157,23cyclictest9374-21diskstats07:25:141
87372610565,31sleep10-21swapper/107:23:291
86212513466,32sleep00-21swapper/007:22:150
893799151127,6cyclictest0-21swapper/007:25:140
173002800,2sleep00-21swapper/010:35:150
273832570,4sleep0893799cyclictest09:35:240
103672361,30sleep110530-21awk10:15:301
287392351,3sleep028801-21/usr/sbin/munin12:30:260
893799341,13cyclictest0-21swapper/009:33:210
78812341,29sleep07896-21http_loadtime10:10:180
260792341,4sleep026236-21grep08:05:320
13212341,29sleep11282-21/usr/sbin/munin11:20:121
8937993313,3cyclictest0-21swapper/012:24:480
8937993310,5cyclictest3472-21munin-run10:00:000
8938993222,6cyclictest11464-21diskstats10:20:131
8938993221,7cyclictest6582-21/usr/sbin/munin08:40:221
8938993217,8cyclictest19998-21iostat_ios07:50:191
305062321,27sleep030623-21sed08:20:020
15092321,4sleep11550-21iostat12:45:191
8938993121,6cyclictest21501-21awk09:20:171
893799311,14cyclictest0-21swapper/012:25:530
893799311,13cyclictest12139-21tr10:20:260
26252311,4sleep12711-21memory08:30:231
204312311,25sleep120488-21df12:10:121
893899304,19cyclictest4234-21iostat_ios10:00:201
893799303,20cyclictest10102-21ntp_states10:15:260
893799301,25cyclictest23199-21needreboot10:50:220
893799301,24cyclictest31605-21vmstat09:45:290
295912301,5sleep00-21swapper/011:07:500
14322301,25sleep01436-21pidof08:26:000
893899293,23cyclictest0-21swapper/108:28:071
8938992919,6cyclictest29817-21pidof11:10:001
8938992912,14cyclictest22-21ksoftirqd/110:37:221
893799294,18cyclictest30561-21iostat_ios11:10:180
893799293,13cyclictest21208-21/usr/sbin/munin10:45:200
893799291,14cyclictest11565-21gdbus07:58:200
68542291,5sleep00-21swapper/010:06:100
302282291,5sleep10-21swapper/108:17:061
281912291,5sleep10-21swapper/109:39:141
258332291,5sleep00-21swapper/010:57:570
258332291,5sleep00-21swapper/010:57:570
245052291,5sleep00-21swapper/008:01:040
244342291,5sleep00-21swapper/009:29:100
244342291,5sleep00-21swapper/009:29:090
185232291,5sleep00-21swapper/009:11:270
169662291,5sleep00-21swapper/009:09:470
145222291,5sleep00-21swapper/010:27:330
14472291,5sleep00-21swapper/012:45:190
141842291,5sleep00-21swapper/011:52:500
13252291,5sleep00-21swapper/009:53:390
129212291,5sleep10-21swapper/107:30:441
124532291,5sleep00-21swapper/011:49:180
109352291,5sleep10-21swapper/108:50:481
893899289,7cyclictest0-21swapper/111:55:111
893899284,18cyclictest24918-21iostat_ios10:55:181
893899284,18cyclictest24918-21iostat_ios10:55:181
8938992820,5cyclictest23153-21fschecks_count09:25:161
8938992820,5cyclictest23153-21fschecks_count09:25:151
8938992819,5cyclictest17206-21grep12:00:231
8938992813,12cyclictest22-21ksoftirqd/112:42:471
893799289,5cyclictest6358-21perl08:40:160
893799285,8cyclictest0-21swapper/008:45:170
893799282,14cyclictest5159-21/usr/sbin/munin11:30:090
8937992812,13cyclictest3-21ksoftirqd/009:03:470
8937992811,15cyclictest0-21swapper/008:36:410
8937992810,15cyclictest0-21swapper/011:36:350
48062281,5sleep10-21swapper/111:28:071
316452281,5sleep10-21swapper/109:45:551
311372281,5sleep00-21swapper/012:38:070
290162281,5sleep10-21swapper/112:30:341
274202281,5sleep10-21swapper/112:28:301
266922281,5sleep10-21swapper/108:09:231
261082281,5sleep10-21swapper/109:32:041
234042281,5sleep00-21swapper/012:15:590
225422281,5sleep00-21swapper/009:24:010
206762281,4sleep00-21swapper/009:19:180
202512281,5sleep10-21swapper/110:43:251
202322281,5sleep00-21swapper/010:43:110
195932281,5sleep10-21swapper/112:05:301
190182281,5sleep10-21swapper/107:47:471
163682281,5sleep00-21swapper/010:32:130
131682281,5sleep10-21swapper/108:59:311
92172271,5sleep10-21swapper/108:47:271
893899279,14cyclictest2134-21hddtemp_smartct09:55:181
8938992718,5cyclictest13855-21unixbench_multi11:50:281
8938992710,4cyclictest0-21swapper/110:05:311
893799279,6cyclictest20199-21runrttasks12:10:060
893799277,6cyclictest10949-21munin-node07:30:010
893799272,21cyclictest3770-21ntp_states12:50:230
8937992712,11cyclictest11841-21fschecks_count08:55:130
893799271,14cyclictest15083-21runrttasks07:38:160
8937992710,5cyclictest11565-21gdbus10:03:140
8937992710,13cyclictest196322chrt12:05:440
64952271,5sleep10-21swapper/111:31:121
46052271,5sleep00-21swapper/011:26:020
44242271,5sleep10-21swapper/112:52:361
322612271,5sleep10-21swapper/108:23:341
314002271,5sleep10-21swapper/111:12:081
297332271,5sleep10-21swapper/109:40:331
238812271,5sleep10-21swapper/110:52:071
235892271,5sleep10-21swapper/112:17:531
231652271,5sleep10-21swapper/108:00:071
226562271,5sleep10-21swapper/107:56:361
184572271,5sleep10-21swapper/109:10:441
167902271,5sleep10-21swapper/107:41:191
167442271,5sleep10-21swapper/109:07:291
10982271,5sleep10-21swapper/109:51:161
10632271,4sleep00-21swapper/011:19:430
893899267,15cyclictest14185-21ls07:35:211
893899264,16cyclictest20868-21diskstats10:45:141
893899262,11cyclictest0-21swapper/111:35:171
893899262,11cyclictest0-21swapper/110:10:171
8938992616,6cyclictest22-21ksoftirqd/109:01:171
893799269,5cyclictest17820-21diskstats07:45:140
893799264,16cyclictest26514-21diskstats11:00:140
893799261,22cyclictest0-21swapper/012:40:010
893799261,14cyclictest0-21swapper/011:42:210
893799261,13cyclictest28611-21seq08:14:490
3832261,21sleep10-21swapper/111:15:271
299592261,5sleep00-21swapper/009:42:550
285632261,4sleep10-21swapper/108:14:211
164702261,21sleep00-21swapper/012:00:120
893899259,3cyclictest0-21swapper/112:35:231
893899259,12cyclictest0-21swapper/110:30:261
893899253,8cyclictest0-21swapper/112:20:161
893899253,18cyclictest0-21swapper/111:45:261
8938992517,5cyclictest22-21ksoftirqd/111:42:081
8938992515,6cyclictest26934-21ls11:00:211
893799257,8cyclictest0-21swapper/007:41:190
8937992516,6cyclictest3-21ksoftirqd/008:32:140
893799251,15cyclictest0-21swapper/007:50:160
893799251,12cyclictest2499-21grep11:20:270
893799251,12cyclictest10169-21basename08:50:180
162002251,5sleep00-21swapper/011:59:150
893899243,17cyclictest0-21swapper/110:25:181
8938992415,6cyclictest22-21ksoftirqd/109:19:211
8937992416,5cyclictest3-21ksoftirqd/008:23:380
893899236,13cyclictest0-21swapper/108:35:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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