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2022-12-07 - 03:25

x86 Intel Pentium Dual-Core T4500 @2300 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #6, 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 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack6slot7.osadl.org (updated Wed Dec 07, 2022 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224702830,1sleep10-21swapper/123:38:021
3137997258,13cyclictest28761-21kworker/u4:221:21:221
3137996761,4cyclictest1318-21NetworkManager20:53:241
3137996760,6cyclictest1318-21NetworkManager19:38:251
3137996758,8cyclictest0-21swapper/121:13:231
3137996757,9cyclictest0-21swapper/119:13:221
312999674,61cyclictest22338-21ssh00:17:220
312999674,61cyclictest1334-21wpa_supplicant00:21:230
312999674,61cyclictest1318-21NetworkManager20:01:240
312999674,61cyclictest1308-21dbus-daemon19:46:240
312999673,62cyclictest1308-21dbus-daemon23:01:240
312999673,62cyclictest1308-21dbus-daemon22:37:240
312999673,62cyclictest1308-21dbus-daemon22:37:240
312999672,63cyclictest1318-21NetworkManager22:23:240
3137996657,8cyclictest0-21swapper/123:12:211
3137996657,8cyclictest0-21swapper/100:21:211
313799665,59cyclictest1308-21dbus-daemon19:31:251
3129996660,4cyclictest3094-21ssh22:32:210
312999664,61cyclictest0-21swapper/023:14:220
312999664,61cyclictest0-21swapper/021:48:220
312999663,62cyclictest8255-21ssh21:58:240
312999663,62cyclictest0-21swapper/023:45:220
312999663,62cyclictest0-21swapper/023:43:230
312999663,62cyclictest0-21swapper/020:51:230
312999663,62cyclictest0-21swapper/019:53:240
312999663,61cyclictest1609-21lldpd22:56:200
312999663,61cyclictest1334-21wpa_supplicant23:58:230
312999663,61cyclictest1318-21NetworkManager21:52:240
312999663,61cyclictest1308-21dbus-daemon20:26:240
3137996561,3cyclictest133150irq/30-eth000:19:231
3137996560,4cyclictest13493-21ssh00:07:231
313799653,61cyclictest1581-21snmpd22:22:231
313799653,61cyclictest0-21swapper/122:31:201
313799653,61cyclictest0-21swapper/122:15:231
312999655,59cyclictest0-21swapper/000:08:210
312999654,60cyclictest0-21swapper/023:39:200
312999654,60cyclictest0-21swapper/022:40:230
312999654,60cyclictest0-21swapper/021:25:210
312999653,61cyclictest19798-21ssh21:31:220
312999653,61cyclictest1584-21ssh23:52:230
312999653,61cyclictest0-21swapper/023:30:200
312999653,61cyclictest0-21swapper/023:28:220
312999653,61cyclictest0-21swapper/023:22:200
312999653,61cyclictest0-21swapper/023:19:200
312999653,61cyclictest0-21swapper/023:07:210
312999653,61cyclictest0-21swapper/022:50:220
312999653,61cyclictest0-21swapper/022:47:230
312999653,61cyclictest0-21swapper/022:15:210
312999653,61cyclictest0-21swapper/022:11:210
312999653,61cyclictest0-21swapper/022:07:220
312999653,61cyclictest0-21swapper/022:02:230
312999653,61cyclictest0-21swapper/021:44:220
312999653,61cyclictest0-21swapper/021:38:230
312999653,61cyclictest0-21swapper/021:23:210
312999653,61cyclictest0-21swapper/021:07:240
312999653,61cyclictest0-21swapper/021:00:220
312999653,61cyclictest0-21swapper/020:57:220
312999653,61cyclictest0-21swapper/020:16:220
312999653,61cyclictest0-21swapper/019:40:220
312999653,61cyclictest0-21swapper/019:28:230
312999653,61cyclictest0-21swapper/000:12:220
312999653,61cyclictest0-21swapper/000:03:200
312999652,62cyclictest0-21swapper/019:02:220
3137996460,3cyclictest0-21swapper/123:32:231
3137996458,5cyclictest0-21swapper/119:53:211
3137996458,4cyclictest1318-21NetworkManager19:23:251
313799643,59cyclictest1308-21dbus-daemon23:46:231
313799642,61cyclictest0-21swapper/122:56:231
313799642,61cyclictest0-21swapper/119:05:211
313799642,61cyclictest0-21swapper/100:10:221
312999643,60cyclictest7866-21ssh21:16:210
312999643,60cyclictest0-21swapper/022:26:230
312999643,60cyclictest0-21swapper/021:11:220
312999643,60cyclictest0-21swapper/020:45:220
312999642,61cyclictest0-21swapper/019:58:220
312999642,61cyclictest0-21swapper/019:31:240
3137996360,2cyclictest22634-21kworker/u4:123:55:241
3137996359,3cyclictest0-21swapper/121:52:221
3137996359,3cyclictest0-21swapper/121:45:231
3137996359,3cyclictest0-21swapper/121:19:211
3137996359,3cyclictest0-21swapper/120:31:211
3137996359,3cyclictest0-21swapper/119:59:231
3137996359,3cyclictest0-21swapper/100:02:201
3137996353,9cyclictest0-21swapper/120:57:231
3137996312,50cyclictest0-21swapper/120:40:211
3129996360,2cyclictest7251-21kworker/u4:019:11:230
3137996258,3cyclictest0-21swapper/122:50:231
3137996258,3cyclictest0-21swapper/122:00:231
3137996258,3cyclictest0-21swapper/121:56:211
3137996258,3cyclictest0-21swapper/121:32:211
3137996258,3cyclictest0-21swapper/121:09:221
3137996257,4cyclictest0-21swapper/120:00:211
3137996257,4cyclictest0-21swapper/119:45:211
3137996253,8cyclictest0-21swapper/123:18:231
3129996257,4cyclictest2810-21kworker/u4:018:56:220
3129996257,4cyclictest0-21swapper/020:07:230
3129996256,4cyclictest1318-21NetworkManager19:24:250
3137996157,3cyclictest0-21swapper/123:53:211
3137996157,3cyclictest0-21swapper/120:16:211
3137996157,3cyclictest0-21swapper/118:55:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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