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2022-05-27 - 18:45

x86 Intel Celeron M @1500 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, slot #5
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 -n -a0 -t1 -p99 -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 highest latencies:
System rack6slot5.osadl.org (updated Fri May 27, 2022 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74999964873603,2881cyclictest12253-21kworker/0:207:12:160
72752805183,203sleep00-21swapper07:09:170
74999951486,368cyclictest4300-21lldpd09:24:280
74999950258,382cyclictest24706-21perl07:56:040
74999949158,371cyclictest26022-21copy09:26:320
74999947037,373cyclictest12968-21ssh12:39:050
74999946535,360cyclictest1652-21munin-node09:46:460
74999945825,371cyclictest19180-21diskmemload10:10:580
74999945422,371cyclictest18793-21sed11:36:200
74999945322,361cyclictest12679-21runrttasks11:22:280
74999945319,372cyclictest23396-21ssh09:18:440
74999945219,372cyclictest28343-21ssh09:30:430
7499994521,437cyclictest8524-21ssh11:13:340
74999945119,371cyclictest11-21ksoftirqd/007:37:120
7499994491,435cyclictest0-21swapper08:59:310
74999944273,187cyclictest20596-21ssh09:11:430
74999944210,418cyclictest23904-21ssh11:48:580
74999944157,214cyclictest0-21swapper11:32:540
7499994373,374cyclictest8215-21ssh09:59:050
74999943557,364cyclictest0-21swapper11:09:470
74999943556,365cyclictest0-21swapper08:00:150
7499994341,372cyclictest0-21swapper08:40:090
74999943258,359cyclictest4319-21snmpd12:13:060
74999943056,359cyclictest31641-21strings12:06:010
74999942653,359cyclictest8825-21ssh12:27:430
74999942557,354cyclictest360150irq/10-yenta11:05:050
7499994251,248cyclictest11663-21ssh10:06:020
74999942453,357cyclictest0-21swapper09:43:360
74999942262,177cyclictest4319-21snmpd09:08:230
74999941952,367cyclictest0-21swapper08:05:070
74999941938,88cyclictest19946-21ssh10:25:230
74999941553,303cyclictest0-21swapper10:35:550
74999941334,373cyclictest7165-21chrt08:35:490
74999940950,32cyclictest0-21swapper08:25:520
74999940848,88cyclictest11-21ksoftirqd/011:41:310
74999940830,364cyclictest31232-21ssh09:37:500
74999940732,359cyclictest9777-21expr11:15:580
74999940649,357cyclictest0-21swapper08:33:490
74999940521,370cyclictest10371-21cpu08:45:270
74999940521,369cyclictest16811-21apt-get10:17:210
74999940438,304cyclictest10534-21copy07:20:540
74999940433,88cyclictest9343-21copy12:32:100
74999940333,356cyclictest23261-21ssh10:33:050
74999940234,363cyclictest5042-21mailstats12:20:110
74999940038,302cyclictest10283-21ssh10:03:090
74999940037,339cyclictest27515-21ssh10:42:270
749999400128,88cyclictest4915-21runrttasks08:18:430
74999939938,302cyclictest0-21swapper10:58:480
74999939936,349cyclictest5882-21ssh09:53:450
74999939736,87cyclictest15102-21ssh11:28:420
74999939735,302cyclictest31801-21ssh10:52:030
74999939734,340cyclictest4915-21runrttasks07:51:550
74999939131,360cyclictest0-21swapper07:44:420
74999938936,339cyclictest10200-21seq07:17:570
74999938724,89cyclictest9467-21munin-node08:51:320
74999938714,359cyclictest4295-21ssh12:17:000
74999938533,338cyclictest27476-21grep11:56:170
74999938417,352cyclictest1290-21nfs_client08:20:380
74999937820,345cyclictest19149-21ssh10:22:310
74999937536,279cyclictest30551-21ssh12:04:250
74999937536,278cyclictest19180-21diskmemload10:46:220
74999937522,339cyclictest24782-21awk11:50:410
74999937436,278cyclictest4915-21runrttasks07:33:000
74999937233,279cyclictest4915-21runrttasks08:11:570
74999936335,89cyclictest16539-21python09:00:540
74999936232,89cyclictest20704-21tr07:45:490
74999935658,298cyclictest0-21swapper07:29:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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