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2023-06-08 - 08:04

x86 Intel Core i3-2100T @2500 MHz, Linux 4.14.28-rt23 (Profile)

Latency plot of system in rack #0, 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 --smi -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 rack0slot0.osadl.org (updated Thu Jun 08, 2023 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
144621540,1sleep50-21swapper/500:39:295
1867021420,0sleep118624-21sshd21:23:001
96221330,4sleep679499cyclictest23:54:336
2363721290,1sleep70-21swapper/723:49:297
2363721290,1sleep70-21swapper/723:49:297
2030421250,4sleep074799cyclictest21:35:190
1884521250,1sleep518844-21sshd00:22:225
3237321200,0sleep50-21swapper/523:59:135
2785021100,0sleep10-21swapper/123:41:221
2785021100,0sleep10-21swapper/123:41:211
420121020,1sleep54148-21sshd21:30:195
420121020,1sleep54148-21sshd21:30:185
2050021010,1sleep3666-21dbus-daemon00:12:583
3702960,1sleep4366-21sshd22:17:554
323642960,1sleep032360-21sshd22:31:540
95922950,0sleep40-21swapper/422:06:014
141472940,0sleep70-21swapper/723:56:107
127002940,0sleep40-21swapper/421:30:344
127002940,0sleep40-21swapper/421:30:334
289722900,1sleep40-21swapper/422:55:224
46102880,0sleep20-21swapper/221:51:232
228892880,0sleep70-21swapper/723:28:137
184902880,1sleep318489-21sshd21:31:533
184902880,1sleep318489-21sshd21:31:533
162632880,0sleep1221rcuc/100:14:011
44522860,1sleep0666-21dbus-daemon23:33:260
317162860,0sleep30-21swapper/322:47:113
214492860,1sleep31-21systemd00:05:533
70202850,2sleep27021-21systemd-cgroups21:30:242
70202850,2sleep27021-21systemd-cgroups21:30:232
33302850,0sleep30-21swapper/322:11:213
185582850,1sleep70-21swapper/700:28:177
98222840,0sleep60-21swapper/621:29:246
91582830,1sleep50-21swapper/500:10:115
304892830,0sleep20-21swapper/200:27:322
20432830,1sleep12036-21sshd23:27:271
189962820,0sleep00-21swapper/022:06:200
164432820,1sleep616444-21sshd23:24:276
302792810,0sleep70-21swapper/723:09:377
184422810,1sleep618444-21bash23:35:096
178792810,1sleep5581rcuc/522:20:445
12392810,1sleep31228-21sshd00:18:103
121632810,1sleep10-21swapper/122:34:431
111022810,0sleep60-21swapper/622:20:296
77382800,1sleep47733-21sshd21:44:534
246232800,0sleep30-21swapper/322:17:383
183762800,1sleep30-21swapper/322:36:063
183762800,1sleep30-21swapper/322:36:063
108512800,1sleep70-21swapper/723:31:187
106242800,0sleep30-21swapper/323:40:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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