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2023-03-22 - 22:34

x86 Intel Xeon E3-1220 @3100 MHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #2, slot #0
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 50 highest latencies:
System rack2slot0.osadl.org (updated Wed Mar 22, 2023 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294802610,0sleep00-21swapper/010:03:020
234242560,0sleep30-21swapper/309:37:213
9472550,0sleep30-21swapper/309:47:553
179942550,0sleep20-21swapper/211:04:482
308812540,0sleep330882-21grepconf.sh11:24:073
317462500,1sleep231747-21bash09:31:202
182192500,0sleep10-21swapper/111:20:411
39982490,0sleep30-21swapper/311:49:503
102702490,0sleep00-21swapper/010:14:280
175512480,0sleep00-21swapper/010:48:280
139802480,0sleep10-21swapper/112:24:571
138642480,0sleep10-21swapper/112:00:181
26342470,0sleep30-21swapper/311:41:053
2427824535,6sleep10-21swapper/107:08:051
178832420,0sleep10-21swapper/109:20:061
148232410,0sleep00-21swapper/011:20:080
2425523927,7sleep00-21swapper/007:07:480
2430023210,7sleep30-21swapper/307:08:223
2410022917,7sleep20-21swapper/207:05:542
50852170,0sleep20-21swapper/212:38:552
24528991615,0cyclictest5163-21kworker/0:009:13:360
240242160,1sleep3391rcuc/309:21:243
218892160,0sleep3401ktimersoftd/311:30:003
304072150,0sleep30-21swapper/310:03:163
45172140,0sleep30-21swapper/312:30:233
24528991413,0cyclictest23561-21lspci10:09:450
24528991412,1cyclictest9856-21kworker/0:211:19:480
2452899140,13cyclictest0-21swapper/009:33:470
212852140,0sleep20-21swapper/208:20:012
206882140,0sleep00-21swapper/012:01:570
2453499130,11cyclictest1-21systemd10:48:551
24528991313,0cyclictest15974-21kworker/0:012:18:340
24528991312,0cyclictest15974-21kworker/0:012:08:400
24528991312,0cyclictest1100-21lspci11:40:410
24528991311,1cyclictest19146-21kworker/0:208:30:160
159952130,0sleep00-21swapper/009:59:500
75522120,0sleep30-21swapper/311:50:223
24546991210,1cyclictest614-21dbus-daemon10:52:093
24539991210,1cyclictest970-21snmpd12:12:052
2453999120,1cyclictest0-21swapper/208:00:252
2453499120,11cyclictest0-21swapper/112:06:451
24528991212,0cyclictest7485-21kworker/0:010:20:420
24528991211,0cyclictest4366-21lspci10:53:130
24528991210,1cyclictest28438-21kworker/0:111:32:060
2452899120,11cyclictest7930-21awk07:45:170
2454699119,1cyclictest18893-21sshd10:08:293
2454699110,10cyclictest0-21swapper/311:05:393
2454699110,10cyclictest0-21swapper/310:41:593
2454699110,10cyclictest0-21swapper/310:17:393
2454699110,10cyclictest0-21swapper/309:54:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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