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2023-02-07 - 13:13

x86 Intel Celeron G3900 @2800 MHz, 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
Characteristics of the alll highest latencies:
System rackcslot2.osadl.org (updated Tue Feb 07, 2023 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33882710,1sleep00-21swapper/023:59:580
299292700,0sleep10-21swapper/121:53:161
10216991810,7cyclictest3360-21ssh23:19:501
10205991810,0cyclictest0-21swapper/000:33:510
10205991711,5cyclictest7376-21kworker/0:022:40:440
52552160,1sleep1596-21lldpd20:18:181
10216991615,1cyclictest13804-21irqstats22:53:191
10216991615,0cyclictest12007-21ssh22:51:071
10216991614,1cyclictest134752sleep119:13:301
10216991611,1cyclictest91rcu_preempt22:26:531
10205991615,1cyclictest548-21ssh23:17:170
10205991614,1cyclictest27969-21ssh21:50:460
10216991515,0cyclictest28000-21sh21:12:061
10216991515,0cyclictest26329-21taskset23:48:221
10216991515,0cyclictest0-21swapper/122:08:221
10216991514,0cyclictest1840-21tr21:18:311
10216991513,1cyclictest22668-21ssh23:03:281
10216991513,1cyclictest0-21swapper/123:46:001
10216991513,1cyclictest0-21swapper/123:24:591
10216991513,1cyclictest0-21swapper/122:05:591
10216991513,1cyclictest0-21swapper/121:49:011
10216991513,1cyclictest0-21swapper/119:43:391
10216991510,3cyclictest27104-21ssh00:28:561
10216991510,1cyclictest91rcu_preempt22:14:041
10216991510,1cyclictest730-21snmpd19:33:191
10216991510,1cyclictest32263-21diskmemload23:15:571
10205991515,0cyclictest32432-21ssh23:56:100
10205991514,1cyclictest8445-21ssh21:27:570
10216991414,0cyclictest29503-21grep21:13:281
10216991414,0cyclictest10703-21sh21:29:281
10216991413,1cyclictest18605-21ssh22:18:271
10216991413,0cyclictest19719-21seq23:40:051
10216991413,0cyclictest14422-21taskset20:42:261
10216991412,1cyclictest27966-21ssh22:30:411
10216991412,1cyclictest24237-21diskmemload21:36:181
10216991412,1cyclictest23846-21apache223:08:101
10216991412,1cyclictest23846-21apache222:58:191
10216991412,1cyclictest0-21swapper/123:58:011
10216991412,1cyclictest0-21swapper/123:57:371
10216991412,1cyclictest0-21swapper/123:33:211
10216991412,1cyclictest0-21swapper/122:38:051
10216991412,1cyclictest0-21swapper/121:03:131
10216991412,1cyclictest0-21swapper/120:43:521
10216991412,1cyclictest0-21swapper/120:34:431
10216991412,1cyclictest0-21swapper/120:26:401
10216991412,1cyclictest0-21swapper/120:02:271
10216991412,1cyclictest0-21swapper/119:24:011
10216991412,1cyclictest0-21swapper/119:18:081
10216991412,1cyclictest0-21swapper/100:18:051
10216991411,1cyclictest93750irq/100-eth0-rx00:07:061
10216991411,0cyclictest6921-21runrttasks21:25:161
10216991410,3cyclictest32332-21ntpq20:03:261
10216991410,1cyclictest91rcu_preempt21:42:221
10216991410,1cyclictest24237-21diskmemload22:43:391
10216991410,1cyclictest19374-21kworker/u4:000:23:461
10216991410,1cyclictest11407-21ssh00:10:141
10205991414,0cyclictest7279-21ssh22:44:370
10205991413,0cyclictest6364-21ssh23:23:240
10205991412,1cyclictest24742-21ssh23:47:100
10205991412,1cyclictest23830-21apache223:01:540
10205991411,2cyclictest93750irq/100-eth0-rx21:57:550
10205991411,2cyclictest93650irq/99-eth0-rx-22:22:450
10205991411,2cyclictest0-21swapper/020:34:250
10205991411,1cyclictest730-21snmpd21:01:100
10205991411,1cyclictest730-21snmpd20:20:240
10205991411,1cyclictest730-21snmpd19:56:090
10205991411,1cyclictest730-21snmpd19:33:160
10205991410,4cyclictest7376-21kworker/0:021:17:370
10205991410,3cyclictest23212-21ssh00:24:390
10205991410,0cyclictest0-21swapper/021:42:020
2981421312,0sleep1596-21lldpd22:33:231
10216991311,1cyclictest93750irq/100-eth0-rx20:13:041
10216991311,1cyclictest730-21snmpd23:28:101
10216991311,1cyclictest730-21snmpd20:58:191
10216991311,1cyclictest730-21snmpd20:08:051
10216991311,1cyclictest730-21snmpd19:53:281
10216991311,1cyclictest730-21snmpd19:28:191
10216991311,1cyclictest730-21snmpd00:33:051
10216991311,1cyclictest0-21swapper/121:43:011
10216991311,1cyclictest0-21swapper/120:53:021
10216991311,1cyclictest0-21swapper/120:28:041
10216991311,1cyclictest0-21swapper/119:38:041
10216991311,1cyclictest0-21swapper/100:13:431
10216991311,0cyclictest91rcu_preempt21:58:261
10216991310,2cyclictest0-21swapper/119:48:111
10216991310,2cyclictest0-21swapper/119:08:131
10216991310,1cyclictest0-21swapper/120:48:431
10205991312,1cyclictest8392-1kworker/u5:123:33:390
10205991312,0cyclictest0-21swapper/000:13:020
10205991311,2cyclictest93750irq/100-eth0-rx23:41:300
10205991311,1cyclictest7404-21kworker/u4:121:28:030
10205991311,1cyclictest730-21snmpd23:28:150
10205991311,1cyclictest730-21snmpd23:08:060
10205991311,1cyclictest730-21snmpd22:53:060
10205991311,1cyclictest730-21snmpd22:48:060
10205991311,1cyclictest730-21snmpd21:03:020
10205991311,1cyclictest730-21snmpd20:53:220
10205991311,1cyclictest730-21snmpd20:43:130
10205991311,1cyclictest730-21snmpd20:23:080
10205991311,1cyclictest730-21snmpd20:13:060
10205991311,1cyclictest730-21snmpd20:05:170
10205991311,1cyclictest730-21snmpd19:58:010
10205991311,1cyclictest730-21snmpd19:48:020
10205991311,1cyclictest730-21snmpd19:43:090
10205991311,1cyclictest730-21snmpd19:38:030
10205991311,1cyclictest730-21snmpd19:23:050
10205991311,1cyclictest730-21snmpd19:18:050
10205991311,1cyclictest730-21snmpd19:13:040
10205991311,1cyclictest730-21snmpd19:08:030
10205991311,1cyclictest730-21snmpd00:18:030
10205991311,1cyclictest7-21ksoftirqd/022:33:180
10205991311,1cyclictest24237-21diskmemload00:32:200
10205991311,1cyclictest23846-21apache223:50:270
10205991311,1cyclictest23846-21apache222:23:090
10205991311,1cyclictest23830-21apache221:08:210
10205991311,0cyclictest0-21swapper/022:05:150
10205991310,2cyclictest93750irq/100-eth0-rx00:05:370
10205991310,2cyclictest730-21snmpd22:08:000
10205991310,2cyclictest2915-21ssh23:18:560
10205991310,2cyclictest16584-21copy20:48:020
10205991310,2cyclictest0-21swapper/021:20:050
10205991310,2cyclictest0-21swapper/019:28:090
10205991310,1cyclictest730-21snmpd22:28:030
10205991310,1cyclictest23846-21apache221:58:130
10205991310,1cyclictest0-21swapper/023:03:270
10205991310,1cyclictest0-21swapper/022:13:530
10205991310,1cyclictest0-21swapper/021:45:140
10205991310,1cyclictest0-21swapper/021:33:460
10205991310,1cyclictest0-21swapper/020:38:320
10205991211,1cyclictest93750irq/100-eth0-rx20:08:260
10205991210,1cyclictest730-21snmpd20:28:020
10205991210,1cyclictest704-21ntpd00:08:220
8275261,2sleep08278-21apache_accesses19:03:120
8279251,2sleep18286-21apt-get19:03:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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