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2025-05-05 - 01:21

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 the 792 highest latencies:
System rackfslot4s.osadl.org (updated Sun May 04, 2025 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3155821310,2sleep031559-21cat11:05:580
538121230,3chrt5377-21ps09:22:310
2873221170,2chrt28733-21sleep11:57:300
138821170,2chrt1372-21ntpq10:12:150
194821150,2sleep01949-21df11:11:000
1492121150,3chrt14922-21sleep09:39:580
3262421080,3chrt32625-21sleep12:05:170
2900621080,2chrt29007-21sleep10:04:040
1983221060,2sleep019834-21sed07:46:120
1964721020,3chrt19648-21sh08:48:590
53602950,2sleep05361-21grep10:20:010
59132910,2sleep05914-21/usr/sbin/munin07:20:330
139292830,2sleep013928-21ls10:35:080
66492820,2sleep06651-21cut10:21:300
12922820,2sleep01293-21df09:15:590
310432810,2sleep031045-21grep09:11:150
296852800,2sleep029687-21aten2.4_rfpower10:05:490
74582790,2sleep07460-21processes12:17:240
185232740,1sleep018525-21cut12:37:080
162852720,2sleep016283-21aten2.4_rfpower07:40:430
96542660,1sleep09656-21irqrtprio12:21:260
243262570,2sleep024328-21fschecks_count07:55:530
174922543,6sleep017468-21ssh10:41:080
171782520,1sleep017176-21ntp_states11:37:160
32760905120,24cyclictest0-21swapper10:57:500
32760905018,25cyclictest0-21swapper08:21:550
240092500,3chrt23925-21apt-get09:55:540
74702492,39sleep07535-21df08:25:470
32760904920,22cyclictest0-21swapper12:12:510
264212493,7sleep026424-21ntpq09:01:190
32760904817,24cyclictest0-21swapper09:40:220
3140324812,19sleep031405-21ntpq07:06:070
145592480,3chrt14557-21/usr/sbin/munin10:36:350
32760904719,21cyclictest0-21swapper12:34:380
32760904718,21cyclictest0-21swapper11:03:280
32760904619,21cyclictest0-21swapper10:47:380
32760904617,22cyclictest0-21swapper09:49:100
32760904617,22cyclictest0-21swapper09:34:500
32760904617,21cyclictest0-21swapper11:53:280
32760904616,23cyclictest0-21swapper10:28:090
205622462,5sleep020564-21ssh11:43:130
122052463,36sleep012201-21hddtemp_smartct12:26:160
54852450,1sleep05482-21http07:20:040
32760904518,22cyclictest0-21swapper09:53:110
32760904517,20cyclictest0-21swapper12:02:520
67492443,34sleep06746-21ssh09:25:490
3276090449,16cyclictest6211-21users11:17:360
32760904316,21cyclictest0-21swapper11:48:490
32760904316,20cyclictest0-21swapper10:54:010
32760904316,10cyclictest12718-21sh07:32:130
32760904314,22cyclictest0-21swapper11:33:060
303252433,32sleep030321-21ntpq08:06:280
3276090426,20cyclictest13855-21telnet07:35:470
3276090425,9cyclictest11498-21ssh11:27:090
32760904220,15cyclictest0-21swapper08:01:420
32760904218,17cyclictest8486-21/usr/sbin/munin07:25:440
32760904218,16cyclictest12389-21/usr/sbin/munin08:36:020
3276090417,28cyclictest29041-21ntpq09:06:240
32760904120,14cyclictest0-21swapper08:15:500
32760904118,16cyclictest20141-21/usr/sbin/munin08:51:440
32760904018,15cyclictest0-21swapper11:20:190
3276090397,12cyclictest25064-21apt09:00:010
3276090394,9cyclictest1663-21ntpq07:11:270
32760903916,15cyclictest22922-21users07:51:460
3276090384,8cyclictest10937-21ntpq08:31:210
3276090384,17cyclictest32024-21diskstats08:10:500
32760903815,15cyclictest0-21swapper08:40:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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