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2022-08-19 - 12:23

x86 Intel Celeron N3350 @1100 MHz, Linux 5.10.90-rt60 (Profile)

Latency plot of system 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 rackcslot4.osadl.org (updated Fri Aug 19, 2022 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2276042267196,55sleep00-21swapper/019:08:440
2276112245199,29sleep10-21swapper/119:08:501
3704032650,4sleep00-21swapper/023:21:260
22782899632,11cyclictest287791-21apt-get21:25:140
172099610,10rtkit-daemon311397-21ssh21:58:110
172099540,3rtkit-daemon1719-21rtkit-daemon20:01:500
172099530,4rtkit-daemon1719-21rtkit-daemon21:16:150
172099520,3rtkit-daemon1719-21rtkit-daemon23:27:511
172099510,4rtkit-daemon1719-21rtkit-daemon00:01:470
172099480,4rtkit-daemon1719-21rtkit-daemon23:54:371
2695362460,3sleep0269540-21unixbench_multi20:50:250
172099450,4rtkit-daemon1719-21rtkit-daemon21:01:501
172099390,3rtkit-daemon0-21swapper/123:04:301
172099380,6rtkit-daemon1719-21rtkit-daemon00:15:160
172099380,4rtkit-daemon1719-21rtkit-daemon00:39:361
172099370,4rtkit-daemon1719-21rtkit-daemon21:31:440
227832993615,4cyclictest26-21ksoftirqd/120:30:181
172099360,4rtkit-daemon1719-21rtkit-daemon20:15:240
172099360,3rtkit-daemon0-21swapper/119:39:571
172099360,3rtkit-daemon0-21swapper/022:48:131
172099360,3rtkit-daemon0-21swapper/022:22:500
22783299356,17cyclictest26-21ksoftirqd/121:45:051
172099350,7rtkit-daemon337513-21/usr/sbin/munin22:35:261
172099350,7rtkit-daemon337513-21/usr/sbin/munin22:35:251
172099350,4rtkit-daemon1719-21rtkit-daemon21:35:070
172099340,4rtkit-daemon284235-21/usr/sbin/munin21:20:310
172099340,4rtkit-daemon1719-21rtkit-daemon23:21:561
172099340,4rtkit-daemon1719-21rtkit-daemon22:12:010
172099340,4rtkit-daemon1719-21rtkit-daemon20:08:230
172099340,3rtkit-daemon1719-21rtkit-daemon21:53:151
172099340,3rtkit-daemon0-21swapper/119:40:240
172099340,3rtkit-daemon0-21swapper/022:05:391
172099340,3rtkit-daemon0-21swapper/020:38:560
172099340,2rtkit-daemon0-21swapper/019:45:021
22783299331,9cyclictest26-21ksoftirqd/121:20:231
172099330,4rtkit-daemon1719-21rtkit-daemon23:17:280
172099330,4rtkit-daemon1719-21rtkit-daemon22:18:080
172099330,4rtkit-daemon1719-21rtkit-daemon21:44:411
172099330,3rtkit-daemon1719-21rtkit-daemon21:55:451
172099330,3rtkit-daemon0-21swapper/123:53:020
172099330,3rtkit-daemon0-21swapper/022:32:311
172099330,3rtkit-daemon0-21swapper/021:35:011
172099330,3rtkit-daemon0-21swapper/021:32:041
172099330,3rtkit-daemon0-21swapper/020:15:301
22783299325,6cyclictest26-21ksoftirqd/123:30:051
22783299321,8cyclictest330426-21apt-get22:25:141
22783299320,9cyclictest365210-21apt-get23:15:131
22783299320,8cyclictest382706-21apt-get23:40:151
22783299320,8cyclictest351500-21apt-get22:55:141
22783299320,7cyclictest312716-21apt-get22:00:131
172099320,4rtkit-daemon1719-21rtkit-daemon23:36:280
172099320,4rtkit-daemon1719-21rtkit-daemon20:47:580
172099320,4rtkit-daemon1719-21rtkit-daemon20:21:510
172099320,4rtkit-daemon1719-21rtkit-daemon00:25:051
172099320,3rtkit-daemon0-21swapper/123:41:270
172099320,3rtkit-daemon0-21swapper/119:31:040
172099320,3rtkit-daemon0-21swapper/021:16:361
22783299312,9cyclictest26-21ksoftirqd/122:54:561
22783299311,10cyclictest26-21ksoftirqd/119:40:211
22783299310,10cyclictest319798-21apt-get22:10:161
172099310,4rtkit-daemon0-21swapper/100:38:400
172099310,3rtkit-daemon1719-21rtkit-daemon20:52:371
172099310,3rtkit-daemon0-21swapper/119:26:560
172099310,3rtkit-daemon0-21swapper/023:38:081
22783299309,10cyclictest26-21ksoftirqd/119:25:001
22783299305,8cyclictest26-21ksoftirqd/100:33:181
22783299303,12cyclictest274033-21apt-get21:05:201
22783299302,9cyclictest26-21ksoftirqd/122:20:161
227832993011,3cyclictest26-21ksoftirqd/120:25:181
172099300,3rtkit-daemon0-21swapper/123:29:300
172099300,3rtkit-daemon0-21swapper/122:01:310
172099300,3rtkit-daemon0-21swapper/020:48:261
172099300,2rtkit-daemon0-21swapper/119:22:150
172099300,26rtkit-daemon1751-21gvfs-afc-volume20:35:151
22783299299,9cyclictest26-21ksoftirqd/119:20:001
22783299298,9cyclictest26-21ksoftirqd/122:15:041
22783299297,9cyclictest26-21ksoftirqd/100:15:111
22783299294,9cyclictest410611-21apt-get00:20:181
22783299294,9cyclictest26-21ksoftirqd/121:11:301
22783299290,7cyclictest340879-21apt-get22:40:121
172099290,3rtkit-daemon1719-21rtkit-daemon20:56:121
172099290,3rtkit-daemon1719-21rtkit-daemon00:13:381
172099290,3rtkit-daemon0-21swapper/119:35:290
172099290,3rtkit-daemon0-21swapper/100:12:130
172099290,3rtkit-daemon0-21swapper/023:14:271
3327972280,2sleep0276373-21diskmemload22:27:500
22783299285,8cyclictest26-21ksoftirqd/119:25:241
22783299283,9cyclictest26-21ksoftirqd/100:05:211
227832992813,3cyclictest26-21ksoftirqd/119:32:381
227832992810,3cyclictest26-21ksoftirqd/120:40:201
22783299280,7cyclictest393040-21apt-get23:55:131
172099280,3rtkit-daemon1719-21rtkit-daemon20:42:150
172099280,3rtkit-daemon0-21swapper/120:32:320
172099280,23rtkit-daemon289859-21rm21:27:221
22783299278,9cyclictest26-21ksoftirqd/119:55:001
22783299274,9cyclictest26-21ksoftirqd/123:47:221
22783299274,9cyclictest26-21ksoftirqd/100:00:171
22783299273,9cyclictest26-21ksoftirqd/120:08:171
4125692260,9sleep00-21swapper/000:21:530
22783299265,9cyclictest26-21ksoftirqd/119:12:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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