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2021-10-27 - 16:12

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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ARMv7 Processor rev 2 (v7l), 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 100 highest latencies:
System rack9slot8s.osadl.org (updated Wed Oct 27, 2021 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501970,0irq/46-4a10000010623-21kworker/0:307:05:370
11824999374,0cyclictest6158-21/usr/sbin/munin09:56:210
11824998870,0cyclictest21907-21ssh09:23:260
11824998770,0cyclictest7686-21ssh12:24:200
11824998769,0cyclictest23353-21apt-get11:46:060
11824998670,0cyclictest18038-21apt-get10:20:530
11824998667,0cyclictest14914-21seq07:18:470
11824998468,0cyclictest26058-21sh09:31:080
11824998466,0cyclictest29451-21seq08:09:150
11824998367,0cyclictest11682-21seq08:59:280
11824998365,0cyclictest32756-21ntp_states12:06:230
11824998365,0cyclictest11306-21ssh12:31:490
11824998363,0cyclictest12420-21ssh10:07:310
11824998265,0cyclictest16678-21seq09:13:250
11824998264,0cyclictest20721-21sh11:38:570
11824998263,0cyclictest27144-21meminfo08:00:490
11824998064,0cyclictest32152-21seq08:18:000
11824998064,0cyclictest2260-21runrttasks12:11:480
11824998060,0cyclictest9428-21ssh11:13:150
11824997963,0cyclictest31844-21ssh09:41:550
11824997762,0cyclictest19022-21ssh09:17:380
11824997761,0cyclictest21401-21ssh10:27:070
11824997661,0cyclictest29899-21rm09:38:380
11824997661,0cyclictest26475-21chrt07:58:250
11824997559,0cyclictest9642-21ntpq10:01:550
11824997559,0cyclictest23476-21ssh10:32:000
11824997359,0cyclictest32730-21apt-key08:20:150
11824997357,0cyclictest6487-21ps08:40:460
11824997357,0cyclictest5279-21ssh11:04:370
11824997357,0cyclictest21481-21df11:40:470
11824997356,0cyclictest25331-21ps10:36:200
11824997355,0cyclictest32724-21ssh10:53:130
11824997355,0cyclictest26790-21/usr/sbin/munin10:41:160
11824997057,0cyclictest5241-21ssh09:53:090
11824997051,0cyclictest0-21swapper09:47:060
11824997044,0cyclictest0-21swapper07:50:180
11824996955,0cyclictest14972-21ssh11:26:340
11824996953,0cyclictest19584-21runrttasks07:35:030
11824996942,0cyclictest0-21swapper07:35:260
11824996847,0cyclictest0-21swapper10:14:100
11824996753,0cyclictest81850irq/46-4a10000012:00:540
11824996545,0cyclictest81850irq/46-4a10000011:05:400
11824996539,0cyclictest0-21swapper10:47:240
11824996453,0cyclictest81850irq/46-4a10000009:05:290
11824996350,0cyclictest28774-21ssh11:57:320
11824996241,0cyclictest0-21swapper11:17:290
11824996150,0cyclictest81850irq/46-4a10000012:26:100
11824996148,0cyclictest81850irq/46-4a10000009:25:170
11824996142,0cyclictest0-21swapper08:40:000
11824996138,0cyclictest0-21swapper08:45:120
11824996032,0cyclictest0-21swapper07:10:260
11824995946,0cyclictest81850irq/46-4a10000008:50:170
11824995945,0cyclictest27400-21ssh11:54:580
11824995846,0cyclictest81850irq/46-4a10000012:36:310
11824995846,0cyclictest81850irq/46-4a10000011:30:480
11824995846,0cyclictest81850irq/46-4a10000011:21:500
11824995838,0cyclictest81850irq/46-4a10000010:15:440
11824995832,0cyclictest0-21swapper10:55:450
11824995741,0cyclictest81850irq/46-4a10000012:15:590
11824995731,0cyclictest0-21swapper09:00:190
11824995643,0cyclictest81850irq/46-4a10000008:11:120
11824995618,0cyclictest1938-21grep08:25:370
11824995544,0cyclictest81850irq/46-4a10000007:25:230
11824995443,0cyclictest101ktimersoftd/007:20:190
11824995339,0cyclictest81850irq/46-4a10000007:45:220
11824995241,0cyclictest81850irq/46-4a10000008:30:190
11824995240,0cyclictest81850irq/46-4a10000007:40:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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