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2023-02-05 - 22:21

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 Feb 05, 2023 12:43:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158232492450,28sleep00-21swapper/007:07:490
159772463386,62sleep10-21swapper/107:09:291
24462740,1chrt2445-21ntp_states07:54:551
305492560,2sleep10-21swapper/107:44:491
182572490,3sleep10-21swapper/110:00:041
46902440,4sleep14694-21timerwakeupswit08:00:031
272082390,2sleep10-21swapper/107:34:581
1616399299,13cyclictest22-21ksoftirqd/108:55:481
1616399286,8cyclictest22-21ksoftirqd/107:26:021
1616399286,7cyclictest22-21ksoftirqd/110:26:101
1616399277,13cyclictest22-21ksoftirqd/109:20:521
1616399275,7cyclictest22-21ksoftirqd/108:59:551
1616399268,8cyclictest22-21ksoftirqd/108:37:121
1616399267,8cyclictest22-21ksoftirqd/111:44:201
1616399266,13cyclictest20920-21taskset07:19:481
1616399258,8cyclictest22-21ksoftirqd/107:30:531
1616399258,7cyclictest22-21ksoftirqd/107:15:211
1616399257,9cyclictest22-21ksoftirqd/111:07:111
1616399257,9cyclictest22-21ksoftirqd/109:45:191
1616399257,8cyclictest22-21ksoftirqd/112:39:211
1616399257,8cyclictest22-21ksoftirqd/112:31:081
1616399257,8cyclictest22-21ksoftirqd/112:09:151
1616399257,8cyclictest22-21ksoftirqd/111:56:221
1616399257,8cyclictest22-21ksoftirqd/111:29:581
1616399257,8cyclictest22-21ksoftirqd/111:25:081
1616399257,8cyclictest22-21ksoftirqd/111:00:051
1616399257,8cyclictest22-21ksoftirqd/110:56:411
1616399257,8cyclictest22-21ksoftirqd/110:48:551
1616399257,8cyclictest22-21ksoftirqd/110:20:301
1616399257,8cyclictest22-21ksoftirqd/109:52:481
1616399257,8cyclictest22-21ksoftirqd/109:30:551
1616399257,8cyclictest22-21ksoftirqd/108:22:221
1616399257,8cyclictest22-21ksoftirqd/107:13:251
1616399257,7cyclictest22-21ksoftirqd/107:39:471
1616399256,9cyclictest22-21ksoftirqd/110:31:531
1616399256,7cyclictest20178-21taskset08:40:211
1616299251,14cyclictest30117-21diskmemload12:19:470
1616399249,7cyclictest22-21ksoftirqd/112:19:371
1616399248,7cyclictest8701-21seq08:10:161
1616399247,8cyclictest22-21ksoftirqd/112:15:401
1616399247,8cyclictest22-21ksoftirqd/112:09:361
1616399247,8cyclictest22-21ksoftirqd/111:49:411
1616399247,8cyclictest22-21ksoftirqd/111:11:511
1616399247,8cyclictest22-21ksoftirqd/110:35:121
1616399247,8cyclictest22-21ksoftirqd/110:14:401
1616399247,8cyclictest22-21ksoftirqd/110:05:151
1616399247,8cyclictest22-21ksoftirqd/109:24:411
1616399247,8cyclictest22-21ksoftirqd/109:09:431
1616399247,8cyclictest22-21ksoftirqd/109:05:161
1616399247,8cyclictest22-21ksoftirqd/108:50:561
1616399247,8cyclictest22-21ksoftirqd/108:45:271
1616399247,8cyclictest22-21ksoftirqd/108:25:191
1616399247,8cyclictest1257-21seq07:52:271
1616399247,7cyclictest22-21ksoftirqd/112:25:511
1616399247,7cyclictest22-21ksoftirqd/112:01:071
1616399247,7cyclictest22-21ksoftirqd/111:46:261
1616399247,7cyclictest22-21ksoftirqd/111:46:261
1616399247,7cyclictest22-21ksoftirqd/111:20:001
1616399247,7cyclictest22-21ksoftirqd/109:15:221
1616399247,7cyclictest22-21ksoftirqd/108:08:551
1616399247,7cyclictest15868-21memory09:54:541
1616399246,9cyclictest22-21ksoftirqd/110:40:221
1616399246,8cyclictest8904-21seq09:35:331
1616399246,8cyclictest22-21ksoftirqd/111:37:151
1616399246,8cyclictest22-21ksoftirqd/111:15:421
1616399246,8cyclictest22-21ksoftirqd/110:13:271
1616399246,8cyclictest16364-21seq08:30:311
1616399246,8cyclictest10602-21seq08:15:151
1616399244,13cyclictest30117-21diskmemload09:39:471
1616399242,5cyclictest0-21swapper/110:49:481
1616299213,8cyclictest0-21swapper/008:29:490
1616299211,6cyclictest1644-21apt-get07:54:450
16162992111,7cyclictest23179-21cat08:49:530
16162992013,5cyclictest3372-21kworker/u4:210:48:330
16162992011,7cyclictest22829-21snmpd09:10:410
16162992011,7cyclictest11992-21cat11:10:030
1616299201,15cyclictest32353-21/usr/sbin/munin07:49:510
133102200,5sleep013339-21systemctl12:39:330
1616299199,7cyclictest778-21ntpq10:39:590
1616299199,7cyclictest5244-21seq10:51:540
1616299199,7cyclictest4158-21awk07:59:550
1616299197,7cyclictest0-21swapper/011:24:460
1616299192,10cyclictest0-21swapper/011:19:450
1616299191,4cyclictest0-21swapper/007:47:020
16162991913,4cyclictest8474-21cat12:24:550
16162991912,5cyclictest25641-21timerandwakeup08:55:000
16162991911,6cyclictest22829-21snmpd12:00:370
16162991911,6cyclictest22829-21snmpd11:54:340
16162991911,6cyclictest22829-21snmpd10:04:490
16162991911,6cyclictest22829-21snmpd09:29:540
16162991910,7cyclictest22829-21snmpd10:20:460
1616299190,5cyclictest0-21swapper/010:37:260
42752180,2sleep00-21swapper/012:14:490
1616299189,7cyclictest18079-21unixbench-2d08:35:000
1616299189,7cyclictest17890-21awk09:59:590
1616299189,6cyclictest188-21systemd-journal09:52:280
1616299188,7cyclictest19767-21cat11:29:520
1616299188,7cyclictest14077-21nfs_client11:14:540
1616299186,6cyclictest0-21swapper/010:29:450
1616299183,9cyclictest0-21swapper/007:34:480
1616299182,11cyclictest5481-21taskset08:04:470
16162991811,5cyclictest25094-21cat07:29:530
16162991811,5cyclictest22829-21snmpd09:27:480
16162991811,5cyclictest22829-21snmpd09:20:590
16162991811,5cyclictest22829-21snmpd09:15:230
16162991810,6cyclictest23607-21sshd10:15:020
16162991810,6cyclictest22829-21snmpd11:05:420
16162991810,6cyclictest22829-21snmpd10:27:220
16162991810,6cyclictest22829-21snmpd09:34:450
16162991810,6cyclictest22829-21snmpd08:16:030
1616299179,6cyclictest23664-21grep11:39:550
1616299179,6cyclictest22829-21snmpd12:32:350
1616299179,6cyclictest19572-21ntpq07:14:550
1616299179,6cyclictest188-21systemd-journal07:11:580
1616299179,6cyclictest13368-21wc08:24:500
1616299179,5cyclictest21508-21uname08:44:550
1616299178,7cyclictest6473-21ntpq10:54:570
1616299178,7cyclictest22829-21snmpd12:07:380
1616299178,7cyclictest21731-21awk07:19:590
1616299174,7cyclictest0-21swapper/009:54:460
1616299174,7cyclictest0-21swapper/009:04:510
1616299173,8cyclictest0-21swapper/011:34:470
1616299173,5cyclictest0-21swapper/008:59:460
16162991712,3cyclictest22213-21grep10:10:110
16162991712,3cyclictest12408-21unixbench_multi08:20:050
1616299171,13cyclictest10079-21uname09:39:530
1616299169,5cyclictest22829-21snmpd08:39:580
1616299168,6cyclictest12156-21ntpq09:44:560
1616299167,6cyclictest29068-21missed_timers07:39:570
1616299162,11cyclictest7609-21apt-get10:59:460
16162991611,3cyclictest22829-21snmpd08:13:420
1616299161,12cyclictest2056-21apt-get12:09:480
1616299157,6cyclictest26822-21acpi11:49:450
1616299153,8cyclictest24945-21apt-get11:44:470
1616299153,8cyclictest24945-21apt-get11:44:470
1616299153,6cyclictest0-21swapper/007:24:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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