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2021-10-26 - 23:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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 5 (v7l), Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50500000 -m -n -a0 -t1 -p99 -i396 -h400 -q
Total number of samples: 50.5 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 alll highest latencies:
System rack5slot7s.osadl.org (updated Tue Oct 26, 2021 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20347224582219,97sleep00-21swapper07:09:590
203969916815,19cyclictest21630-21apt-get07:15:380
203969916618,120cyclictest30407-21apt-get08:11:410
203969916315,122cyclictest16518-21munin-run10:00:030
203969916218,119cyclictest6436-21munin-run09:00:030
203969916113,61cyclictest2107-21cat11:50:060
203969916112,120cyclictest6860-21apt-get12:22:000
203969916033,91cyclictest28062-21wc11:10:040
203969916011,123cyclictest8433-21cat09:10:370
203969915938,100cyclictest28684-21timerandwakeup11:11:230
203969915922,26cyclictest6852-21diskstats09:01:200
203969915918,26cyclictest32234-21munin-run08:20:030
203969915841,98cyclictest17349-21latency_hist10:05:030
203969915817,113cyclictest8219-21users09:06:230
203969915721,29cyclictest756-21apt-get08:25:460
203969915714,43cyclictest10204-21ls09:20:500
203969915615,24cyclictest5206-21/usr/sbin/munin12:06:160
203969915522,104cyclictest26487-21apt-get07:45:300
203969915516,37cyclictest22596-21diskstats10:35:480
203969915516,23cyclictest22582-21diskstats07:20:490
203969915515,99cyclictest705-21irqstats11:40:530
203969915511,117cyclictest30122-21awk08:06:020
20396991548,121cyclictest2164-21grep08:31:150
203969915436,20cyclictest12402-21apt-get09:35:220
203969915429,22cyclictest0-21swapper08:25:080
203969915416,98cyclictest8456-21cut12:26:160
203969915413,23cyclictest20370-21snmpd12:30:530
203969915411,29cyclictest12134-21wc09:31:160
203969915411,25cyclictest2922-21/usr/sbin/munin11:55:140
203969915320,107cyclictest9877-21memory12:35:550
203969915319,106cyclictest10790-21apt-get09:25:260
203969915318,25cyclictest18352-21diskstats10:10:490
203969915316,114cyclictest15124-21diskstats09:50:490
203969915314,24cyclictest23906-21sort10:41:160
20396991529,118cyclictest24316-21grep07:30:580
203969915221,102cyclictest29025-21diskstats08:00:530
203969915216,95cyclictest17550-21df_inode10:05:580
203969915216,24cyclictest28790-21munin-run08:00:040
203969915214,23cyclictest27912-21unixbench_singl07:51:150
203969915214,22cyclictest6865-21munin-run12:20:050
203969915213,26cyclictest24917-21kworker/u2:311:00:160
203969915213,115cyclictest31537-21irqstats11:30:530
203969915121,28cyclictest30564-21apt-get11:25:300
203969915118,29cyclictest29038-21diskstats11:15:420
203969915116,22cyclictest23373-21df_inode07:25:400
203969915113,114cyclictest21136-21unixbench_singl07:11:150
203969915113,113cyclictest14909-21munin-run09:50:010
203969915111,27cyclictest4761-21sed08:46:130
203969915019,103cyclictest2605-21df_inode08:35:370
203969915014,112cyclictest24810-21apt10:50:010
203969915012,114cyclictest19104-21apt-get10:15:330
203969915011,115cyclictest20370-21snmpd10:20:400
203969915010,118cyclictest6050-21apt12:15:010
20396991499,100cyclictest32336-21/usr/sbin/munin11:35:520
203969914940,88cyclictest4192-21sendmail_mailst12:01:100
203969914918,106cyclictest2127-21apt-get11:50:230
203969914916,107cyclictest25713-21apt-get10:55:260
203969914914,94cyclictest13419-21apt-get09:40:430
203969914913,21cyclictest5171-21memory08:50:540
203969914821,24cyclictest24963-21df07:35:320
203969914818,25cyclictest25861-21irqstats07:40:470
203969914816,105cyclictest3429-21df08:40:350
203969914815,25cyclictest24912-21apt-get10:50:390
203969914813,112cyclictest22224-21/usr/sbin/munin10:31:190
203969914811,114cyclictest9441-21grep09:15:580
203969914629,18cyclictest30490-21cat11:25:040
203969914623,102cyclictest21039-21if_eth010:25:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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