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2023-01-31 - 10:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 
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x86 Intel Pentium N4200 @1100 MHz, Linux 5.9.1-rt18 (Profile)

Latency plot of shadow in rack #c, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 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 rackcslot4s.osadl.org (updated Tue Jan 31, 2023 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
627299441,25cyclictest3858-21awk23:50:002
627299441,25cyclictest3858-21awk23:50:002
627299432,24cyclictest11693-21lsb_release21:00:012
627299431,29cyclictest19438-21lsb_release00:34:592
6272994310,19cyclictest3098-21cron20:35:002
627299381,21cyclictest14861-21timerandwakeup19:30:292
627299360,19cyclictest29326-21ntp_states21:50:222
627299360,19cyclictest20114-21cat00:35:232
627299350,24cyclictest22392-21ntp_states21:30:242
627299350,24cyclictest17997-21snmp_o5powerctl19:40:292
627299350,18cyclictest8331-21cut22:25:002
627299341,19cyclictest5868-21sed22:15:352
627299341,19cyclictest4485-21sshd22:13:282
627299341,16cyclictest0-21swapper/222:45:242
627299340,23cyclictest8032-21mailstats20:45:272
627299340,23cyclictest0-21swapper/200:15:282
627299340,20cyclictest548-21munin-run23:40:002
627299340,19cyclictest26694-21sshd21:42:442
627299340,18cyclictest23025-21cat23:05:332
627299340,17cyclictest3339-21apt-get20:35:162
627299331,21cyclictest0-21swapper/221:55:282
627299331,17cyclictest23978-21ntp_kernel_pll_21:35:242
627299331,15cyclictest0-21swapper/219:25:102
627299330,29cyclictest1052-21python320:30:002
627299330,23cyclictest0-21swapper/219:45:242
627299330,20cyclictest26176-21timerandwakeup20:05:302
627299330,20cyclictest22410-21latency19:55:212
627299321,29cyclictest18404-21latency_hist22:55:002
627299320,17cyclictest27847-21cat20:10:332
627299313,25cyclictest28127-21sort21:45:302
627299311,27cyclictest8089-21tune2fs00:00:232
627299311,27cyclictest7129-21systemctl00:00:002
627299311,26cyclictest31373-21turbostat23:35:002
627299310,28cyclictest6046-21python319:10:012
627299310,18cyclictest16387-21switchtime19:35:292
627299310,15cyclictest0-21swapper/222:40:362
627299301,25cyclictest15680-21dpkg00:24:592
627299300,2cyclictest23700-1kworker/2:2H22:30:002
627299300,27cyclictest5522-21grep20:40:222
627299300,1cyclictest0-21swapper/200:10:012
627299293,20cyclictest11498-21python322:35:002
627299292,22cyclictest19801-21lsb_release21:25:002
627299291,25cyclictest29986-21apt-config20:20:012
627299291,25cyclictest17415-21apt-config00:26:452
627299290,6cyclictest30170-21dpkg20:20:022
627299290,1cyclictest0-21swapper/223:10:222
627299290,1cyclictest0-21swapper/223:10:212
6264992916,2cyclictest111rcu_preempt19:40:010
627299282,19cyclictest20015-21apt-get21:25:182
627299281,23cyclictest24909-21sort20:05:002
627299281,23cyclictest18229-21latency_hist21:20:002
627299280,25cyclictest26522-21dpkg23:20:002
627299280,25cyclictest26522-21dpkg23:20:002
627299280,25cyclictest2433-21latency_hist22:10:002
627299280,1cyclictest0-21swapper/221:05:012
627299276,18cyclictest0-21swapper/221:10:242
627299271,22cyclictest14966-21sed21:10:002
627299271,22cyclictest11763-21ntpq00:10:302
627299271,22cyclictest10310-21lsb_release19:20:002
627299270,24cyclictest9892-21sed20:50:302
627299270,23cyclictest11901-21cron19:25:002
627299270,1cyclictest0-21swapper/222:35:012
627299270,1cyclictest0-21swapper/222:35:012
627799266,5cyclictest31-21ksoftirqd/319:10:023
627299263,16cyclictest20260-21apt-get23:00:192
627299262,18cyclictest28358-21apt-get23:25:142
627299260,23cyclictest32678-21grep22:00:262
627299260,23cyclictest1746-21ps23:40:352
627299260,1cyclictest0-21swapper/223:50:332
6264992620,4cyclictest9-21ksoftirqd/023:35:260
627799250,4cyclictest0-21swapper/320:05:383
627299250,21cyclictest27045-21cut23:20:202
627299250,1cyclictest0-21swapper/219:50:212
627799242,7cyclictest31-21ksoftirqd/300:35:233
6277992412,10cyclictest1021-21apt-get20:29:593
627299241,20cyclictest6291-21uname19:10:002
6270992414,8cyclictest8281-21cat00:00:241
627799236,9cyclictest301rcuc/320:45:223
6264992316,4cyclictest6405-21apt-key22:20:020
627799222,5cyclictest528-21cron23:39:593
627799222,17cyclictest12563-21ls00:15:003
6277992215,5cyclictest16365-21cat00:25:203
6277992214,6cyclictest30961-21snmp_o5powerctl23:30:293
6277992214,6cyclictest18698-21perl21:20:233
6277992211,9cyclictest13312-21latency_hist21:05:013
627799220,8cyclictest31-21ksoftirqd/321:10:333
627299220,19cyclictest19373-21ntpq22:55:272
627799212,8cyclictest31-21ksoftirqd/319:10:023
6277992114,5cyclictest19603-21grep22:55:283
6277992112,6cyclictest9417-21ntpq20:50:243
6277992111,8cyclictest1213-21sshd21:50:293
627799210,8cyclictest31-21ksoftirqd/321:15:253
627799210,8cyclictest31-21ksoftirqd/300:00:163
627799210,7cyclictest31-21ksoftirqd/321:25:313
627799210,7cyclictest19429-21munin-run00:35:003
627799210,6cyclictest737-21cron21:00:013
627799210,6cyclictest23260-21lsb_release20:00:003
627099212,13cyclictest26955-21apt-get21:45:181
6270992113,6cyclictest16358-21snmp_o5powerctl19:35:271
6270992113,6cyclictest12564-21grep19:25:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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