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2024-07-19 - 01:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, 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 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackfslot4s.osadl.org (updated Thu Jul 18, 2024 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
727721210,3chrt7278-21cat09:31:020
1790921210,2chrt17907-21df_inode08:50:270
2271821130,3chrt22719-21sleep10:55:570
647521100,3chrt6476-21ssh11:25:260
2887621100,2chrt28877-21sleep11:06:230
2212921090,3chrt22130-21sh09:56:580
3188121080,3chrt31880-21apt-config08:15:080
2022721080,1sleep020229-21latency_hist11:50:050
2839121070,3chrt28392-21sleep12:04:420
1299921070,3chrt13000-21sh11:36:120
3009321060,3chrt30094-21sleep09:13:570
1507321060,2chrt15074-21sh12:38:030
49321040,2chrt494-21sleep11:14:330
2177821030,2chrt21779-21sleep08:57:010
2599721020,3chrt25998-21sh08:02:410
315202940,2chrt31521-21sh08:14:320
19002900,2sleep01902-21cat11:16:130
101632890,1sleep010166-21grep10:33:020
279642860,2chrt27861-21ntp_states10:07:190
22872860,2sleep02288-21uniq12:15:510
257192850,1sleep025717-21idleruntime09:05:390
2856428411,55sleep028630-21perl07:05:260
42252780,1sleep04226-21ld10:22:550
108582780,2sleep010855-21diskstats12:31:140
38502730,2sleep03851-21basename11:20:330
235932650,2sleep023595-21cat09:00:440
60092574,42sleep06012-21ntpq08:26:060
201822560,2sleep020201-21grep07:51:560
199462563,44sleep019970-21cat10:50:570
53562542,6sleep05467-21cut12:21:030
320452543,8sleep032048-21ssh10:15:230
139922543,8sleep014030-21cat09:42:160
45602533,42sleep04557-21ntp_states07:21:070
67322524,40sleep06739-21ntp_states10:27:070
216412523,7sleep021636-21ntpq11:51:470
30657904919,22cyclictest0-21swapper12:12:440
30657904919,22cyclictest0-21swapper11:43:340
171202490,2chrt17118-21/usr/sbin/munin07:45:520
323502480,2chrt32348-21/usr/sbin/munin09:17:240
30657904819,22cyclictest0-21swapper09:37:390
30657904812,29cyclictest0-21swapper11:57:230
119652483,7sleep011961-21ssh10:36:080
309062473,36sleep030910-21sleep12:08:510
30657904718,22cyclictest0-21swapper12:28:090
176902472,6sleep017693-21ssh10:46:160
30657904617,22cyclictest0-21swapper10:43:010
22692460,2chrt2240-21ssh09:21:390
134192460,2chrt13417-21run-parts07:40:000
3065790455,12cyclictest25215-21grep11:00:350
30657904518,20cyclictest0-21swapper09:29:320
30657904514,23cyclictest0-21swapper10:13:200
96442443,34sleep09648-21ntpq07:31:120
30657904418,18cyclictest14620-21ntpq07:40:570
30657904415,22cyclictest0-21swapper10:02:570
3065790436,10cyclictest16568-21users08:46:280
3065790435,11cyclictest7729-21df08:30:260
3065790435,10cyclictest2721-21df08:20:420
3065790434,19cyclictest6264-21df_inode07:25:290
3065790424,11cyclictest27682-21ntpq08:05:480
3065790424,10cyclictest31943-21ntp_states07:11:120
30657904220,15cyclictest0-21swapper11:33:180
30657904220,15cyclictest0-21swapper09:52:340
30657904214,20cyclictest15127-21apt-get09:45:130
3065790414,10cyclictest1754-21memory07:15:470
3065790395,26cyclictest25446-21snmpd08:45:000
30657903914,17cyclictest10272-21df08:35:290
30657903813,18cyclictest21696-21df07:55:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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