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2025-07-13 - 23:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #8

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 100 highest latencies:
System rack0slot8s.osadl.org (updated Sun Jul 13, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991910,81ptp4l0-21swapper/107:06:041
197392690,0sleep20-21swapper/212:10:194
1184926654,10sleep50-21swapper/507:08:027
1175126654,10sleep00-21swapper/007:06:340
1178426351,10sleep70-21swapper/707:07:059
1177526354,7sleep110-21swapper/1107:06:573
1177426251,9sleep100-21swapper/1007:06:562
112802620,0sleep70-21swapper/708:30:129
1190226150,9sleep40-21swapper/407:08:496
1175726049,9sleep60-21swapper/607:06:398
192992580,0sleep100-21swapper/1007:15:192
103692530,0sleep50-21swapper/509:50:327
94980220,5rtkit-daemon0-21swapper/907:09:1311
1235599222,7cyclictest0-21swapper/410:35:006
1235599202,6cyclictest0-21swapper/412:10:006
1235599202,13cyclictest0-21swapper/411:30:006
1234599193,11cyclictest0-21swapper/210:05:004
1238099183,9cyclictest0-21swapper/910:15:0011
1237499183,9cyclictest0-21swapper/808:15:0110
1237499183,10cyclictest0-21swapper/809:14:5910
1234599183,9cyclictest0-21swapper/208:05:274
275991170,0ptp4l0-21swapper/109:25:001
275991170,0ptp4l0-21swapper/107:30:201
1238499170,1cyclictest0-21swapper/1009:00:222
1234599173,9cyclictest0-21swapper/211:40:014
1234599173,10cyclictest0-21swapper/211:15:004
1234599172,9cyclictest0-21swapper/212:30:014
1234599172,8cyclictest0-21swapper/209:40:264
275991160,1ptp4l21-21ksoftirqd/112:30:181
275991160,1ptp4l21-21ksoftirqd/112:05:191
275991160,1ptp4l21-21ksoftirqd/109:50:311
275991160,0ptp4l0-21swapper/108:05:001
1238099163,7cyclictest0-21swapper/909:40:0011
1238099162,8cyclictest0-21swapper/910:10:0011
1237499162,7cyclictest0-21swapper/810:39:5910
1237499160,15cyclictest0-21swapper/807:45:1910
1234999162,8cyclictest0-21swapper/312:10:015
1234599164,7cyclictest0-21swapper/208:35:014
1234599163,9cyclictest0-21swapper/208:30:244
1234599163,8cyclictest0-21swapper/211:25:004
1234599162,9cyclictest0-21swapper/211:15:014
1234599162,9cyclictest0-21swapper/207:15:004
1234599162,8cyclictest0-21swapper/209:45:244
118652167,7sleep80-21swapper/807:08:1810
275991150,6ptp4l21-21ksoftirqd/112:10:281
275991150,0ptp4l0-21swapper/112:30:001
275991150,0ptp4l0-21swapper/111:45:141
1238499152,8cyclictest0-21swapper/1010:25:252
12384991511,3cyclictest0-21swapper/1010:20:192
1238099153,7cyclictest0-21swapper/912:40:0011
1238099153,7cyclictest0-21swapper/909:40:2811
1238099152,9cyclictest0-21swapper/908:25:0011
1238099152,8cyclictest0-21swapper/912:25:0011
1238099152,8cyclictest0-21swapper/907:25:0011
1237499152,8cyclictest0-21swapper/809:20:0010
1234999153,7cyclictest0-21swapper/307:35:255
1234599153,7cyclictest0-21swapper/211:30:004
111652150,0sleep90-21swapper/909:54:5911
58342140,0sleep40-21swapper/409:05:146
1238099142,7cyclictest0-21swapper/908:20:0111
1235599143,6cyclictest0-21swapper/408:10:236
1234999142,7cyclictest0-21swapper/310:45:005
1234999142,7cyclictest0-21swapper/307:15:005
1234599142,8cyclictest0-21swapper/212:35:254
1234599142,8cyclictest0-21swapper/209:10:264
1234599142,8cyclictest0-21swapper/207:20:274
55432130,0sleep50-21swapper/510:30:007
275991130,1ptp4l21-21ksoftirqd/110:59:481
275991130,1ptp4l21-21ksoftirqd/109:35:211
275991130,1ptp4l21-21ksoftirqd/109:08:001
275991130,1ptp4l21-21ksoftirqd/107:46:271
275991130,0ptp4l0-21swapper/108:40:291
1238499132,6cyclictest0-21swapper/1011:10:002
1238099131,8cyclictest0-21swapper/908:35:0111
1237499132,7cyclictest0-21swapper/812:05:0010
1237499132,6cyclictest0-21swapper/808:30:0010
1235599133,6cyclictest0-21swapper/411:35:006
1234999133,6cyclictest0-21swapper/309:44:595
1234999132,7cyclictest0-21swapper/311:05:245
1234999132,7cyclictest0-21swapper/310:00:005
1234999132,7cyclictest0-21swapper/309:24:595
275991120,4ptp4l21-21ksoftirqd/111:00:151
275991120,1ptp4l21-21ksoftirqd/112:21:331
275991120,1ptp4l21-21ksoftirqd/111:34:291
275991120,1ptp4l21-21ksoftirqd/110:48:001
275991120,1ptp4l21-21ksoftirqd/110:30:201
275991120,1ptp4l21-21ksoftirqd/109:15:281
275991120,1ptp4l21-21ksoftirqd/108:20:181
275991120,0ptp4l0-21swapper/112:35:241
275991120,0ptp4l0-21swapper/111:57:181
275991120,0ptp4l0-21swapper/111:41:031
275991120,0ptp4l0-21swapper/111:20:271
275991120,0ptp4l0-21swapper/110:08:551
275991120,0ptp4l0-21swapper/109:10:261
275991120,0ptp4l0-21swapper/108:57:471
275991120,0ptp4l0-21swapper/108:15:191
275991120,0ptp4l0-21swapper/108:10:251
275991120,0ptp4l0-21swapper/107:37:271
1237499121,8cyclictest63-21ksoftirqd/810:20:2610
1235599122,6cyclictest0-21swapper/410:55:266
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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