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2022-09-25 - 04:45
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OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, 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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x86 Intel Celeron N2930 @1833 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of shadow in rack #4, slot #7
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 --smi -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 376 highest latencies:
System rack4slot7s.osadl.org (updated Sun Sep 25, 2022 00:43:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212662463404,44sleep00-21swapper/019:07:320
211622460394,52sleep10-21swapper/119:06:241
214552353319,18sleep00-21swapper/019:09:360
217802700,1chrt21778-21ls23:20:151
213562520,3sleep021360-21missed_timers23:20:080
2163299439,6cyclictest18278-21snmpd00:03:070
2163299415,28cyclictest0-21swapper/023:34:500
2163299342,4cyclictest0-21swapper/021:59:520
2163399333,23cyclictest29847-21taskset19:29:481
21632993310,20cyclictest12599-21pluginstate21:34:350
2163399322,23cyclictest2877-21diskmemload21:29:521
2163299329,6cyclictest25679-21seq22:06:560
2163299327,6cyclictest4684-21seq19:47:590
2163299323,5cyclictest0-21swapper/021:14:490
2163299323,5cyclictest0-21swapper/020:49:460
2163299323,3cyclictest0-21swapper/020:09:470
2163299322,5cyclictest0-21swapper/020:39:470
2163299322,10cyclictest496-21runrttasks21:34:500
2163299321,6cyclictest28431-21apt-get23:39:500
2163299321,4cyclictest0-21swapper/020:14:460
2163299316,6cyclictest32598-21cut23:49:530
2163299313,4cyclictest0-21swapper/019:59:520
2163299313,4cyclictest0-21swapper/019:34:470
2163299312,5cyclictest0-21swapper/020:44:480
2163299312,4cyclictest0-21swapper/021:49:490
2163299312,4cyclictest0-21swapper/021:04:480
2163399306,16cyclictest8048-21smartctl21:20:071
2163299308,6cyclictest32160-21grep23:49:350
2163299308,5cyclictest24291-21basename23:29:350
2163299307,6cyclictest15625-21cut00:30:010
2163299307,5cyclictest27947-21wc22:14:350
2163299306,6cyclictest9970-21swap21:25:030
2163299306,6cyclictest5390-21fschecks_count19:49:520
2163299301,6cyclictest0-21swapper/020:54:470
2163299301,5cyclictest0-21swapper/022:39:490
21632993011,17cyclictest18278-21snmpd22:21:440
21632993011,17cyclictest18278-21snmpd21:40:400
21632993010,18cyclictest18278-21snmpd22:26:590
2163299296,5cyclictest22854-21sed20:34:550
2163299295,6cyclictest2761-21sed23:55:040
2163299292,7cyclictest9447-21apt-get00:14:490
2163299292,5cyclictest0-21swapper/020:29:490
2163299292,4cyclictest0-21swapper/023:29:530
2163299292,4cyclictest0-21swapper/021:54:490
2163299292,4cyclictest0-21swapper/019:54:470
2163299291,9cyclictest11371-21apt-get00:19:480
2163299291,4cyclictest0-21swapper/000:24:470
21632992911,16cyclictest18278-21snmpd23:15:510
21632992911,16cyclictest18278-21snmpd19:14:440
21632992910,4cyclictest18176-21cron20:24:350
2163399282,18cyclictest2877-21diskmemload22:49:561
2163399281,13cyclictest8849-21apt-get19:59:531
2163299289,3cyclictest496-21runrttasks22:38:400
2163299288,3cyclictest11066-21aten2_r4power_p22:54:560
2163299286,4cyclictest18914-21latency_hist00:39:350
2163299285,6cyclictest11889-21unixbench-2d20:05:000
2163299285,5cyclictest31071-21unixbench_singl19:30:030
2163299282,4cyclictest0-21swapper/021:09:490
2163299281,8cyclictest9476-21fschecks_time22:50:000
2163299281,7cyclictest2210-21python19:40:000
2163299281,7cyclictest12895-21apt-get22:59:540
21632992810,15cyclictest18278-21snmpd22:46:470
2163399273,15cyclictest17077-21sshd00:34:541
2163299274,9cyclictest5488-21/usr/sbin/munin00:04:590
2163299274,4cyclictest16879-21aten2_r4power_e23:09:520
2163299273,6cyclictest15789-21proc_pri23:05:040
2163299272,8cyclictest31695-21apt-get20:59:460
2163299272,6cyclictest27943-21apt-get19:24:470
2163299271,9cyclictest28936-21/usr/sbin/munin22:15:010
2163299271,8cyclictest19157-21ntpq20:24:570
2163299271,8cyclictest16936-21grep21:44:530
2163299271,8cyclictest1520-21cpuspeed_turbos22:29:540
2163299271,7cyclictest8228-21/usr/sbin/munin00:09:590
2163299270,9cyclictest8365-21/usr/sbin/munin21:20:090
2163299264,5cyclictest26038-21/usr/sbin/munin19:19:550
2163399244,13cyclictest0-21swapper/100:19:481
2163399243,13cyclictest2877-21diskmemload22:04:501
2163399243,11cyclictest18278-21snmpd22:09:491
2163399242,15cyclictest6324-21ntpq00:05:051
21633992411,10cyclictest18278-21snmpd23:14:481
21633992317,4cyclictest1646-21tune2fs19:39:521
2163399226,10cyclictest0-21swapper/122:44:501
2163399224,8cyclictest0-21swapper/119:24:471
2163399224,11cyclictest0-21swapper/122:59:541
2163399222,15cyclictest5021-21apt-get19:49:481
21633992216,4cyclictest26395-21cat23:34:351
2163399214,7cyclictest0-21swapper/100:14:481
2163399212,12cyclictest29034-21avahi-daemon23:04:511
21633992115,4cyclictest4846-21turbostat.cron19:49:351
21633992111,8cyclictest18278-21snmpd22:30:051
2163399206,8cyclictest0-21swapper/121:24:491
2163399205,6cyclictest0-21swapper/121:44:491
2163399204,8cyclictest0-21swapper/120:59:471
2163399204,7cyclictest0-21swapper/119:34:461
2163399202,16cyclictest23542-21kworker/1:020:44:481
21633992014,3cyclictest3638-21tune2fs21:09:531
21633992013,5cyclictest20382-21tr20:29:501
235152191,2sleep10-21swapper/119:14:361
2163399198,3cyclictest25799-21awk20:44:341
2163399197,10cyclictest0-21swapper/121:54:571
2163399194,8cyclictest0-21swapper/123:49:471
2163399194,8cyclictest0-21swapper/119:19:571
2163399194,8cyclictest0-21swapper/119:09:461
2163399194,7cyclictest0-21swapper/100:29:541
2163399193,8cyclictest0-21swapper/123:39:501
2163399193,6cyclictest0-21swapper/123:09:511
21633991911,6cyclictest28433-21cat20:49:531
21633991911,6cyclictest18278-21snmpd23:34:451
21633991911,6cyclictest18278-21snmpd21:15:181
21633991911,6cyclictest18278-21snmpd00:00:301
21633991911,6cyclictest1109-21cron22:29:351
21633991910,7cyclictest2486-21ntpq23:54:591
21633991910,7cyclictest11497-21cat22:55:011
2163399187,10cyclictest921-21kworker/1:121:50:121
2163399187,10cyclictest23542-21kworker/1:020:56:281
2163399186,11cyclictest23542-21kworker/1:020:13:101
2163399185,6cyclictest0-21swapper/122:19:531
2163399184,8cyclictest0-21swapper/122:34:521
2163399183,6cyclictest0-21swapper/120:04:461
2163399183,10cyclictest22559-21apt-get23:24:491
2163399182,15cyclictest23542-21kworker/1:020:15:421
2163399182,12cyclictest7549-21apt-get00:09:491
2163399182,12cyclictest22159-21apt-get20:34:481
2163399181,15cyclictest921-21kworker/1:121:04:461
2163399181,15cyclictest23542-21kworker/1:020:19:561
21633991811,5cyclictest18278-21snmpd00:26:431
21633991810,6cyclictest18278-21snmpd22:17:371
2163399180,16cyclictest23542-21kworker/1:019:54:541
2163399179,6cyclictest18278-21snmpd23:44:421
2163399172,13cyclictest6712-21runrttasks22:43:181
2163399172,11cyclictest22317-21apt-get21:59:531
2163399172,11cyclictest12747-21/usr/sbin/munin21:35:071
2163399171,8cyclictest15121-21fschecks_time21:39:551
2163399170,8cyclictest18328-21/usr/sbin/munin20:24:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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