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2025-07-01 - 04:15

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 Tue Jul 01, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
949801020,96rtkit-daemon0-21swapper/1019:06:162
275991950,85ptp4l0-21swapper/119:06:291
1569926655,8sleep50-21swapper/519:07:457
41532620,0sleep100-21swapper/1020:55:242
1574826149,10sleep00-21swapper/019:08:290
212322600,0sleep90-21swapper/922:00:1911
1579525951,6sleep60-21swapper/619:09:118
263842580,0sleep10-21swapper/122:50:171
1582225746,9sleep70-21swapper/719:09:369
1255425746,9sleep110-21swapper/1119:05:023
1557025139,10sleep40-21swapper/419:05:566
1623799211,15cyclictest0-21swapper/419:15:016
1623799211,15cyclictest0-21swapper/400:15:006
1626999202,11cyclictest0-21swapper/1121:25:003
1623799202,14cyclictest0-21swapper/419:45:006
292702180,0sleep00-21swapper/000:20:260
289212180,0sleep80-21swapper/822:55:0110
1621799183,8cyclictest0-21swapper/000:25:240
1624699172,8cyclictest0-21swapper/600:10:018
1623799172,9cyclictest0-21swapper/420:20:006
1623399171,10cyclictest0-21swapper/300:35:015
157972178,7sleep80-21swapper/819:09:1310
275991160,1ptp4l841-21missed_timers23:40:201
275991160,1ptp4l841-21missed_timers23:40:191
275991160,1ptp4l21-21ksoftirqd/121:10:191
1626099162,9cyclictest0-21swapper/920:30:0011
1623399163,8cyclictest0-21swapper/322:30:015
1621799163,9cyclictest0-21swapper/000:20:010
1621799163,11cyclictest0-21swapper/000:40:010
1621799162,9cyclictest0-21swapper/019:55:250
275991150,1ptp4l21-21ksoftirqd/123:20:201
275991150,1ptp4l21-21ksoftirqd/123:20:191
275991150,1ptp4l21-21ksoftirqd/122:27:181
275991150,1ptp4l21-21ksoftirqd/119:25:231
275991150,0ptp4l0-21swapper/123:25:161
275991150,0ptp4l0-21swapper/123:25:161
275991150,0ptp4l0-21swapper/100:35:251
275991150,0ptp4l0-21swapper/100:25:201
1626999153,7cyclictest0-21swapper/1100:10:013
1626999152,9cyclictest0-21swapper/1122:05:003
1626999152,7cyclictest0-21swapper/1122:55:013
1626099153,7cyclictest0-21swapper/919:25:0111
1626099152,8cyclictest0-21swapper/922:15:0011
16237991512,2cyclictest11662-21turbostat23:15:006
1623399153,7cyclictest0-21swapper/320:10:005
1623399150,9cyclictest0-21swapper/300:20:005
1621799154,7cyclictest0-21swapper/023:45:010
1621799154,7cyclictest0-21swapper/023:45:000
1621799154,7cyclictest0-21swapper/020:30:010
1621799153,7cyclictest0-21swapper/023:25:010
1621799153,7cyclictest0-21swapper/023:25:000
1621799152,8cyclictest0-21swapper/019:20:000
141802150,0sleep1201rcuc/100:00:011
296712140,0sleep90-21swapper/919:25:1511
275991140,1ptp4l21-21ksoftirqd/121:20:261
275991140,1ptp4l21-21ksoftirqd/119:55:001
1626099143,7cyclictest0-21swapper/919:20:0011
1626099142,7cyclictest0-21swapper/921:10:0011
1624699142,7cyclictest0-21swapper/600:30:018
1624699141,7cyclictest0-21swapper/623:40:018
1624699141,7cyclictest0-21swapper/623:40:008
1623799142,7cyclictest0-21swapper/422:05:276
1623399143,7cyclictest0-21swapper/320:55:005
1623399142,8cyclictest0-21swapper/323:45:015
1623399142,8cyclictest0-21swapper/323:45:015
1623399142,7cyclictest0-21swapper/322:35:015
1623399142,7cyclictest0-21swapper/322:05:015
1623399141,8cyclictest0-21swapper/321:10:015
1621799142,7cyclictest0-21swapper/021:40:010
32362130,0sleep60-21swapper/620:15:178
279022130,0sleep50-21swapper/521:30:007
275991130,3ptp4l27493-21awk20:45:181
275991130,1ptp4l21-21ksoftirqd/100:31:171
275991130,0ptp4l0-21swapper/123:02:341
275991130,0ptp4l0-21swapper/121:42:241
275991130,0ptp4l0-21swapper/119:45:151
275991130,0ptp4l0-21swapper/119:20:221
202762130,0sleep60-21swapper/620:35:198
1626099132,7cyclictest0-21swapper/923:30:0111
1626099132,7cyclictest0-21swapper/923:30:0111
1626099132,7cyclictest0-21swapper/919:40:0011
1624299133,7cyclictest0-21swapper/520:25:017
1624299132,7cyclictest0-21swapper/523:45:257
1624299131,8cyclictest28631-21kworker/u24:021:45:017
1623399133,7cyclictest0-21swapper/320:05:005
1623399132,7cyclictest0-21swapper/300:30:015
1623399132,6cyclictest0-21swapper/321:50:005
1621799132,7cyclictest0-21swapper/021:10:260
1621799131,6cyclictest0-21swapper/020:20:000
158372130,0sleep40-21swapper/419:49:596
275991120,3ptp4l29668-21expr22:55:161
275991120,1ptp4l21-21ksoftirqd/121:29:211
275991120,1ptp4l21-21ksoftirqd/119:15:011
275991120,1ptp4l21-21ksoftirqd/100:20:501
275991120,0ptp4l0-21swapper/123:30:591
275991120,0ptp4l0-21swapper/123:30:581
275991120,0ptp4l0-21swapper/123:15:151
275991120,0ptp4l0-21swapper/123:13:311
275991120,0ptp4l0-21swapper/120:14:011
275991120,0ptp4l0-21swapper/100:08:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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