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2019-06-27 - 11:37

Intel(R) Celeron(R) CPU G3900 @ 2.80GHz, Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #c, slot #2
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 -h200 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
The worst-case latency is about 1.00 times higher under extreme CPU load.
Results of all systems under extreme CPU load are combined on this summary graph.
Characteristics of the highest latencies:
System rackcslot2.osadl.org (updated Thu Jun 27, 2019 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273621170,1sleep01362799cyclictest22:54:280
1315327662,9sleep10-21swapper/119:06:281
1315327662,9sleep10-21swapper/119:06:281
1295726754,8sleep00-21swapper/019:04:260
1295726754,8sleep00-21swapper/019:04:260
13628991716,1cyclictest22029-21ssh22:41:271
13628991716,1cyclictest11825-21ntpq23:04:161
13628991715,1cyclictest29536-21ls22:49:151
13628991715,1cyclictest2591-21apache_accesses23:29:091
13628991715,1cyclictest14814-21ls19:09:191
13628991710,0cyclictest763-21kworker/1:019:40:141
13627991716,0cyclictest6506-21sh21:52:040
13627991716,0cyclictest15336-21taskset22:00:460
13627991715,1cyclictest246442sleep023:53:250
13627991710,0cyclictest0-21swapper/022:42:080
13628991616,0cyclictest9385-21ssh00:12:081
13628991615,1cyclictest14082-21ssh23:41:081
13628991615,1cyclictest12906-21ssh21:24:341
13628991614,1cyclictest3806-21ls20:04:141
13628991610,6cyclictest0-21swapper/122:45:041
13628991610,6cyclictest0-21swapper/122:14:591
13628991610,1cyclictest763-21kworker/1:021:02:141
13628991610,1cyclictest763-21kworker/1:020:49:381
13628991610,0cyclictest763-21kworker/1:020:23:301
13628991610,0cyclictest763-21kworker/1:019:47:261
13628991610,0cyclictest0-21swapper/100:32:321
13627991616,0cyclictest4815-21ssh23:30:380
13627991616,0cyclictest28057-21ssh21:40:320
13627991615,1cyclictest3403-21ssh22:22:140
13627991615,1cyclictest0-21swapper/021:11:020
13627991615,0cyclictest14714-21sh00:19:020
13627991611,5cyclictest4743-21kworker/0:121:48:000
13627991610,6cyclictest0-21swapper/021:19:190
13628991515,0cyclictest4020-21ssh22:23:071
13628991515,0cyclictest0-21swapper/122:02:381
13628991515,0cyclictest0-21swapper/119:50:591
13628991515,0cyclictest0-21swapper/100:26:581
13628991515,0cyclictest0-21swapper/100:04:201
13628991514,1cyclictest7594-21sensors_temp21:19:191
13628991514,0cyclictest17160-21ssh23:09:241
13628991510,5cyclictest0-21swapper/123:34:481
13628991510,5cyclictest0-21swapper/119:20:551
13628991510,4cyclictest0-21swapper/123:01:001
13628991510,4cyclictest0-21swapper/122:55:301
13628991510,4cyclictest0-21swapper/122:29:141
13628991510,4cyclictest0-21swapper/122:04:201
13628991510,4cyclictest0-21swapper/121:38:111
13628991510,1cyclictest763-21kworker/1:023:49:301
13628991510,1cyclictest763-21kworker/1:020:14:261
13628991510,0cyclictest763-21kworker/1:020:54:541
13628991510,0cyclictest763-21kworker/1:020:44:221
13628991510,0cyclictest763-21kworker/1:000:01:181
13628991510,0cyclictest0-21swapper/122:35:121
13628991510,0cyclictest0-21swapper/119:56:501
13628991510,0cyclictest0-21swapper/119:15:241
13627991515,0cyclictest1316-21ssh23:27:270
13627991515,0cyclictest0-21swapper/023:43:230
13627991514,1cyclictest27813-21ssh22:47:540
13627991514,1cyclictest16453-21ssh22:35:190
13627991514,1cyclictest11469-21ssh21:57:110
13627991511,4cyclictest4743-21kworker/0:122:04:080
13627991511,4cyclictest4743-21kworker/0:121:38:520
13627991511,4cyclictest4743-21kworker/0:121:27:080
13627991510,5cyclictest4743-21kworker/0:122:17:000
13627991510,5cyclictest0-21swapper/020:18:540
13627991510,5cyclictest0-21swapper/000:21:280
13627991510,4cyclictest4743-21kworker/0:120:38:040
13627991510,0cyclictest0-21swapper/020:21:150
2568421410,3sleep10-21swapper/121:39:081
2019821410,3sleep10-21swapper/123:48:311
13628991414,0cyclictest16553-21diskstats21:29:111
13628991413,1cyclictest7691-21ssh22:26:351
13628991413,0cyclictest19085-21ssh00:23:451
13628991412,1cyclictest643-21nscd00:16:131
13628991412,1cyclictest31493-21apache221:46:101
13628991411,3cyclictest29626-21ssh23:23:401
13628991410,4cyclictest0-21swapper/119:35:561
13628991410,4cyclictest0-21swapper/119:30:161
13628991410,3cyclictest0-21swapper/121:09:141
13628991410,0cyclictest763-21kworker/1:023:26:221
13628991410,0cyclictest763-21kworker/1:021:08:381
13628991410,0cyclictest763-21kworker/1:020:10:541
13628991410,0cyclictest0-21swapper/122:11:371
13628991410,0cyclictest0-21swapper/120:25:161
13628991410,0cyclictest0-21swapper/119:25:521
13627991414,0cyclictest7-21ksoftirqd/019:54:060
13627991414,0cyclictest29853-21mailstats22:49:170
13627991413,1cyclictest0-21swapper/021:00:500
13627991412,1cyclictest8025-21sh23:34:160
13627991412,1cyclictest31493-21apache223:19:470
13627991412,1cyclictest31493-21apache223:00:300
13627991412,1cyclictest22332-21cat19:29:140
13627991412,1cyclictest22193-21sh00:26:290
13627991412,1cyclictest19002-21/usr/sbin/munin20:44:150
13627991412,1cyclictest0-21swapper/023:09:110
13627991411,3cyclictest4743-21kworker/0:120:54:040
13627991411,2cyclictest7788-21ssh00:09:280
13627991410,4cyclictest4743-21kworker/0:121:31:200
13627991410,4cyclictest4743-21kworker/0:120:31:160
13627991410,3cyclictest4743-21kworker/0:120:40:000
13627991410,3cyclictest4743-21kworker/0:119:46:200
13627991410,3cyclictest0-21swapper/022:12:200
13628991312,1cyclictest763-21kworker/1:020:01:421
13628991312,1cyclictest31474-21apache223:54:491
13628991311,2cyclictest86250irq/101-eth0-rx21:54:081
13628991311,2cyclictest31493-21apache200:35:241
13628991310,3cyclictest0-21swapper/120:39:171
13628991310,1cyclictest763-21kworker/1:020:30:341
13628991310,1cyclictest0-21swapper/121:49:191
13628991310,1cyclictest0-21swapper/121:17:001
13628991310,0cyclictest0-21swapper/123:14:151
13627991312,1cyclictest583-21avahi-daemon20:01:570
13627991312,1cyclictest31493-21apache223:04:430
13627991312,1cyclictest31493-21apache219:10:170
13627991312,1cyclictest31474-21apache221:14:140
13627991312,1cyclictest2082-21snmpd23:44:140
13627991312,0cyclictest9800-21cstates22:29:090
13627991311,2cyclictest86050irq/100-eth0-rx00:29:440
13627991311,2cyclictest4743-21kworker/0:119:54:400
13627991311,1cyclictest31474-21apache220:12:020
13627991311,1cyclictest16857-21timerwakeupswit19:14:180
13627991310,3cyclictest0-21swapper/023:59:150
13627991310,3cyclictest0-21swapper/023:14:470
13627991310,3cyclictest0-21swapper/021:05:060
13627991310,3cyclictest0-21swapper/020:05:410
13627991310,3cyclictest0-21swapper/019:34:500
13627991310,1cyclictest30116-21ssh00:34:270
13627991310,1cyclictest28040-1kworker/u5:100:06:480
13627991310,1cyclictest26800-21ssh23:54:390
13627991310,1cyclictest0-21swapper/019:19:590
13627991310,0cyclictest0-21swapper/022:24:290
13628991210,1cyclictest0-21swapper/120:34:101
13627991210,2cyclictest0-21swapper/019:24:080
13627991210,1cyclictest0-21swapper/020:54:090
13627991210,1cyclictest0-21swapper/020:24:160
13627991210,1cyclictest0-21swapper/019:39:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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