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2023-01-27 - 14:34

x86 Intel Core i5-8265UE @1600 MHz, Linux 5.10.41-rt42 (Profile)

Latency plot of system in rack #a, slot #8
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
Compare latency of primary with shadow system
Characteristics of the 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rackaslot8.osadl.org (updated Fri Jan 27, 2023 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314832295265,19sleep00-21swapper/019:06:370
316812282253,19sleep10-21swapper/119:08:561
316132273240,19sleep20-21swapper/219:08:082
314292248215,21sleep30-21swapper/319:05:563
288382600,0sleep00-21swapper/023:52:280
216432600,0sleep00-21swapper/023:47:280
93442570,0sleep10-21swapper/123:15:411
262312560,0sleep20-21swapper/221:12:002
115712560,0sleep10-21swapper/100:03:301
215042540,0sleep00-21swapper/022:40:050
78962510,0sleep20-21swapper/222:30:142
310912190,0sleep00-21swapper/023:31:140
318092180,0sleep20-21swapper/223:31:562
88402170,0sleep10-21swapper/119:25:211
233532160,0sleep20-21swapper/223:25:392
305292150,0sleep20-21swapper/221:38:152
63522140,0sleep00-21swapper/021:20:270
321292140,0sleep10-21swapper/122:24:441
48312130,0sleep30-21swapper/321:20:183
161622120,0sleep10-21swapper/122:13:031
263882100,0sleep00-21swapper/023:05:190
32304290,0sleep30-21swapper/322:24:543
318739996,2cyclictest28-21ksoftirqd/220:40:012
19852290,0sleep10-21swapper/119:50:231
318779984,3cyclictest283-21systemd-journal22:13:213
318779984,2cyclictest283-21systemd-journal21:30:003
318779980,7cyclictest14688-21sh00:30:443
318739986,1cyclictest3361-21apt-get23:35:182
318659984,3cyclictest283-21systemd-journal20:53:140
318659984,2cyclictest283-21systemd-journal23:22:290
17418280,0sleep10-21swapper/123:45:001
17299280,0sleep20-21swapper/223:21:232
12197280,0sleep10-21swapper/122:55:271
31971270,0sleep00-21swapper/022:46:370
318779976,1cyclictest34-21ksoftirqd/321:12:513
318779974,2cyclictest283-21systemd-journal23:09:393
318779974,2cyclictest26405-21/usr/sbin/munin00:15:143
318779974,2cyclictest1-21systemd23:04:143
318779973,3cyclictest283-21systemd-journal00:38:053
318779973,3cyclictest1-21systemd22:30:013
318779973,3cyclictest1167-21snmpd00:26:123
318779972,3cyclictest283-21systemd-journal23:26:453
318779971,1cyclictest508-21dbus-daemon23:53:013
318739974,2cyclictest508-21dbus-daemon21:21:112
318739973,3cyclictest1-21systemd21:07:262
318739973,2cyclictest283-21systemd-journal23:59:172
318739972,3cyclictest283-21systemd-journal22:01:402
318739972,3cyclictest283-21systemd-journal20:40:442
318739972,3cyclictest15678-21sh20:55:012
318739970,7cyclictest0-21swapper/222:25:032
318689974,2cyclictest283-21systemd-journal23:13:501
318689973,3cyclictest8166-21sshd22:07:331
318689973,3cyclictest29741-11brltty19:49:001
318689973,3cyclictest15257-21users20:50:211
318689973,3cyclictest1167-21snmpd20:57:411
318689973,3cyclictest1167-21snmpd19:37:001
318689973,1cyclictest0-21swapper/123:50:251
318689973,1cyclictest0-21swapper/122:03:161
318659974,2cyclictest7942-21df_inode22:30:140
318659974,2cyclictest32483-21diskstats19:10:150
318659974,2cyclictest32173-21cron00:20:000
318659974,2cyclictest29741-11brltty21:05:210
318659974,2cyclictest283-21systemd-journal00:33:540
318659974,2cyclictest16132-21sshd19:43:290
318659973,3cyclictest283-21systemd-journal23:00:010
318659973,3cyclictest283-21systemd-journal19:36:040
318659973,3cyclictest24943-21sshd20:02:080
318659973,3cyclictest12101-21basename20:45:160
318659973,3cyclictest12101-21basename20:45:150
318659973,3cyclictest0-21swapper/000:08:320
318659973,2cyclictest283-21systemd-journal21:41:140
318779966,0cyclictest0-21swapper/323:14:143
318779966,0cyclictest0-21swapper/322:50:243
318779965,1cyclictest29741-11brltty00:13:033
318779963,2cyclictest7875-21expr21:45:143
318779963,2cyclictest5749-21sh23:36:053
318779963,2cyclictest5525-21cat19:20:143
318779963,2cyclictest5480-21sh23:59:073
318779963,2cyclictest32298-21ssh21:16:053
318779963,2cyclictest283-21systemd-journal23:30:293
318779963,2cyclictest2237-21ssh21:40:253
318779963,2cyclictest16028-21sh00:06:313
318779963,2cyclictest14968-21cat19:40:173
318779963,2cyclictest1305-21awk00:20:223
318779963,2cyclictest1242-21ssh22:02:443
318779963,2cyclictest10695-21rm22:31:433
318779962,3cyclictest9827-21cat19:30:133
318779962,3cyclictest4835-21expr20:30:123
318779962,3cyclictest3523-21date22:50:003
318779962,3cyclictest2709-21smart_sda19:15:023
318779962,3cyclictest22664-21sshd22:17:293
318779962,3cyclictest21354-21expr19:55:133
318779962,3cyclictest18861-21cat21:00:203
318779962,3cyclictest17078-21grep19:45:143
318779962,3cyclictest12838-21cat19:35:173
318779962,3cyclictest1-21systemd20:14:023
318779962,3cyclictest1167-21snmpd22:59:343
318779962,3cyclictest1167-21snmpd22:06:533
318779962,3cyclictest1167-21snmpd21:56:443
318779962,3cyclictest1167-21snmpd21:36:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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