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2022-11-29 - 09:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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 
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ARM TI AM3354 @800 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #9, slot #8
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 792 highest latencies:
System rack9slot8s.osadl.org (updated Tue Nov 29, 2022 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501550,0irq/46-4a10000018656-21kworker/0:119:07:570
81950970,0irq/46-4a10000031155-21ssh23:30:270
82050950,0irq/47-4a10000030433-21ssh22:27:280
82050940,0irq/47-4a10000018889-21kworker/u2:1321:01:040
82050920,0irq/47-4a10000025723-21/usr/sbin/munin19:31:240
81950920,0irq/46-4a1000008302-21ssh22:46:590
82050910,0irq/47-4a10000024946-21ssh00:20:170
82050910,0irq/47-4a10000016015-21ssh22:00:260
82050910,0irq/47-4a10000010284-21ssh22:51:040
82050900,0irq/47-4a1000006678-21apt-get23:45:170
82050900,0irq/47-4a1000005640-21diskmemload21:40:220
82050900,0irq/47-4a100000357-21ssh00:35:170
82050900,0irq/47-4a10000023842-21df22:15:330
82050900,0irq/47-4a10000021805-21ssh23:12:040
82050900,0irq/47-4a10000021054-21ssh22:10:190
82050900,0irq/47-4a10000020814-21ssh00:11:210
82050900,0irq/47-4a10000017293-21ssh00:05:330
82050890,0irq/47-4a1000003081-21ssh21:35:230
82050890,0irq/47-4a10000030322-21ssh00:30:270
82050890,0irq/47-4a10000030280-21kworker/u2:023:35:400
82050890,0irq/47-4a10000027652-21ssh21:20:130
82050890,0irq/47-4a10000026393-21/usr/sbin/munin22:21:520
82050890,0irq/47-4a10000013851-21ssh21:55:560
301792898,0sleep030181-21df19:45:220
82050880,0irq/47-4a10000030729-21ssh23:29:360
82050880,0irq/47-4a1000002248-21snmpd20:38:100
82050880,0irq/47-4a10000022215-21diskmemload00:25:490
82050870,0irq/47-4a1000003976-21/usr/sbin/munin23:40:500
82050870,0irq/47-4a1000003276-21munin-run20:05:010
82050870,0irq/47-4a10000026304-21ntp_states23:20:560
82050870,0irq/47-4a10000024118-21ssh21:13:080
82050870,0irq/47-4a10000022661-21ssh00:15:400
82050870,0irq/47-4a10000020792-21rm22:09:560
82050870,0irq/47-4a10000020246-21ls19:11:250
82050870,0irq/47-4a10000016360-21/usr/sbin/munin20:51:120
82050870,0irq/47-4a10000014890-21ssh23:00:000
82050870,0irq/47-4a10000014719-21apt20:45:010
82050870,0irq/47-4a10000013520-21kworker/u2:523:06:070
82050870,0irq/47-4a10000012594-21ps23:56:080
81950870,0irq/46-4a10000030278-21ssh21:25:140
82050860,0irq/47-4a1000005691-21runrttasks20:11:420
82050860,0irq/47-4a1000003416-21dpkg20:05:170
82050860,0irq/47-4a10000032471-21kworker/u2:920:20:380
82050860,0irq/47-4a10000031688-21ssh22:30:260
82050860,0irq/47-4a10000024661-21rm23:17:420
82050860,0irq/47-4a10000023047-21meminfo19:20:320
82050860,0irq/47-4a10000019904-21kworker/u2:322:36:190
82050860,0irq/47-4a10000012640-21ssh21:53:410
81950860,0irq/46-4a10000025019-21apt-get21:15:220
81950860,0irq/46-4a10000010119-21ssh21:48:510
82050850,0irq/47-4a1000009371-21ssh23:50:200
82050850,0irq/47-4a10000027225-21/usr/sbin/munin19:35:420
82050850,0irq/47-4a1000002706-21ssh21:34:410
82050850,0irq/47-4a10000022629-21munin-run19:20:030
82050850,0irq/47-4a1000002248-21snmpd19:58:030
82050850,0irq/47-4a10000015922-21ls23:01:080
82050840,0irq/47-4a1000007508-21sendmail-mta20:19:520
82050840,0irq/47-4a1000004808-21ssh22:40:460
82050840,0irq/47-4a10000026688-21kworker/u2:019:40:320
82050840,0irq/47-4a10000017022-21munin-run00:05:020
82050840,0irq/47-4a10000014847-21/usr/sbin/munin20:45:340
82050830,0irq/47-4a1000002248-21snmpd19:27:560
82050820,0irq/47-4a10000011496-21kworker/u2:520:35:020
82050810,0irq/47-4a10000017458-21kworker/u2:1121:10:000
190632810,0sleep018889-21kworker/u2:1320:59:170
99552800,0chrt8614-21kworker/u2:220:26:200
82050800,0irq/47-4a1000002248-21snmpd19:53:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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