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2025-07-17 - 20:01

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 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.

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 the 376 highest latencies:
System rackfslot4s.osadl.org (updated Thu Jul 17, 2025 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3163521210,2chrt30605-21/usr/sbin/munin10:06:120
3143521180,2chrt31434-21/usr/sbin/munin08:05:260
267521120,2chrt2676-21ssh09:15:260
1900021070,2chrt19001-21sleep08:43:140
1606021070,4chrt16061-21ld10:36:230
286692890,2sleep028672-21sort11:57:180
99662880,1sleep09967-21idleruntime10:26:040
197252860,1sleep019726-21hostname08:45:250
66922830,2sleep06693-21aten2.4_rfpower10:20:320
105192770,2sleep010520-21sh12:22:570
315990758,19cyclictest0-21swapper11:24:510
315990747,10cyclictest31059-21ntpq12:01:440
315990746,27cyclictest23508-21ssh09:51:480
315990725,25cyclictest27568-21ld10:56:540
3159907214,23cyclictest0-21swapper10:34:100
315990717,10cyclictest14369-21perl09:35:560
292262710,2sleep029224-21aten2.4_rfpower11:00:350
65392700,2sleep06541-21irqrtprio12:16:030
315990705,19cyclictest29221-21ntpq10:02:020
315990696,8cyclictest11329-21apt-get12:25:220
315990696,11cyclictest683-21ssh12:06:050
315990695,11cyclictest21982-21ntpq10:46:450
3159906920,13cyclictest0-21swapper09:34:410
315990689,18cyclictest0-21swapper08:18:490
315990685,11cyclictest15848-21users12:32:210
315990684,17cyclictest29149-21diskstats08:00:340
298682670,2sleep029869-21hostname09:05:280
315990666,10cyclictest10444-21ntpq08:26:190
315990665,11cyclictest19081-21irqstats10:41:530
315990663,16cyclictest23696-21ssh11:48:550
3159906616,15cyclictest0-21swapper09:27:440
3159906611,17cyclictest0-21swapper11:13:530
196522560,1sleep019653-21aten2.4-expect09:45:360
195392542,42sleep019596-21sleep07:40:480
196242520,1sleep019626-21ssh11:41:080
180332510,2chrt18009-21ssh09:42:000
3159904820,20cyclictest0-21swapper09:13:090
171502480,3chrt17136-21ntpq07:35:550
3159904719,21cyclictest0-21swapper11:09:190
315990466,21cyclictest24547-21df11:50:360
174124612,18sleep01749-21ntpq07:05:490
3159904519,18cyclictest15983-21ssh11:35:340
3159904518,20cyclictest0-21swapper10:12:580
3159904514,23cyclictest859-21snmpd11:15:210
315990445,19cyclictest3481-21ssh12:11:040
315990444,18cyclictest7393-21perl08:21:260
3159904316,9cyclictest24457-21ssh10:51:130
3159904314,22cyclictest10395-21apt-get11:25:310
134712430,4chrt13472-21sh08:32:160
315990426,16cyclictest6760-21ntpq09:21:500
315990425,18cyclictest24996-21ssh09:55:140
315990424,18cyclictest27510-21diskstats09:00:320
315990424,11cyclictest14907-21users11:32:220
315990415,9cyclictest3735-21apt-get10:15:150
3159904117,19cyclictest26341-21runrttasks08:57:190
3159904117,17cyclictest13952-21telnet07:31:160
42452400,2sleep04246-21collect207:10:530
315990409,25cyclictest0-21swapper07:56:310
315990405,27cyclictest12427-21sshd07:26:380
315990405,11cyclictest17990-21ntpq12:36:250
315990405,10cyclictest14604-21df_inode08:35:280
3159904014,18cyclictest21278-21apt-get07:45:220
315990394,28cyclictest22438-21df_inode08:50:320
315990394,25cyclictest9445-21ntpq07:21:060
315990394,18cyclictest6116-21df_inode07:15:300
3159903914,18cyclictest2618-21ld08:11:190
3159903912,19cyclictest24832-21ntpq07:51:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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