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2023-02-06 - 14:07

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 highest latencies:
System rackaslot8.osadl.org (updated Mon Feb 06, 2023 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27402287256,20sleep00-21swapper/019:09:150
26912279249,19sleep20-21swapper/219:08:362
25342279248,20sleep10-21swapper/119:06:341
26972252218,22sleep30-21swapper/319:08:413
289822610,0sleep10-21swapper/122:35:011
283942590,0sleep30-21swapper/322:13:483
156612570,0sleep00-21swapper/022:46:330
114492550,0sleep20-21swapper/200:07:112
56822190,0sleep00-21swapper/022:20:100
243822180,0sleep00-21swapper/023:33:580
259572170,0sleep30-21swapper/323:55:193
302342160,0sleep00-21swapper/021:33:320
73272130,0sleep30-21swapper/323:02:013
180642120,0sleep10-21swapper/100:11:471
290999114,4cyclictest10472-21grep19:25:012
290099107,2cyclictest12-21ksoftirqd/000:00:010
290099100,9cyclictest20158-21ssh22:29:240
29009997,1cyclictest12-21ksoftirqd/019:15:010
31983280,0sleep031989-21gltestperf21:55:150
29099986,2cyclictest28-21ksoftirqd/219:15:012
29099984,3cyclictest508-21dbus-daemon21:52:272
29099984,3cyclictest32270-21munin-run00:00:012
29059986,1cyclictest241832chrt23:12:531
29009984,3cyclictest283-21systemd-journal23:14:120
8662270,0sleep00-21swapper/022:42:120
29149976,1cyclictest0-21swapper/321:39:213
29149974,2cyclictest22937-21sh23:53:493
29149973,3cyclictest508-21dbus-daemon21:31:353
29149973,3cyclictest508-21dbus-daemon20:12:443
29149973,3cyclictest1167-21snmpd22:38:023
29149973,3cyclictest1167-21snmpd00:02:373
29149972,1cyclictest141rcu_preempt19:32:173
29099976,1cyclictest25978-21ssh21:30:192
29099973,3cyclictest283-21systemd-journal20:41:312
29099973,3cyclictest1167-21snmpd20:47:222
29099971,3cyclictest24385-21latency_hist23:55:012
29099970,4cyclictest374-21idleruntime-cro20:15:012
29059976,1cyclictest22-21ksoftirqd/100:05:011
29059976,1cyclictest0-21swapper/121:54:341
29059975,1cyclictest22-21ksoftirqd/119:15:011
29059974,2cyclictest508-21dbus-daemon23:37:341
29059974,2cyclictest29741-11brltty21:02:231
29059973,3cyclictest508-21dbus-daemon19:53:081
29059973,3cyclictest19116-21gdbus21:30:001
29059973,3cyclictest1167-21snmpd20:06:511
29059973,3cyclictest1167-21snmpd20:06:511
29059972,3cyclictest283-21systemd-journal23:34:541
29059972,3cyclictest283-21systemd-journal21:17:241
29059970,1cyclictest9146-21ssh00:29:151
29009975,2cyclictest12-21ksoftirqd/000:00:010
29009974,2cyclictest508-21dbus-daemon22:39:350
29009973,3cyclictest283-21systemd-journal22:34:550
29009973,3cyclictest283-21systemd-journal19:45:300
29009973,3cyclictest283-21systemd-journal19:37:310
29009972,3cyclictest283-21systemd-journal21:21:090
14865270,0sleep3331rcuc/321:23:463
11464270,0sleep00-21swapper/021:41:540
11082270,0sleep20-21swapper/222:02:262
29149966,0cyclictest0-21swapper/323:07:163
29149963,2cyclictest9592-21ssh22:01:113
29149963,2cyclictest7065-21ssh21:18:483
29149963,2cyclictest5602-21ssh22:20:073
29149963,2cyclictest5264-21cron22:20:013
29149963,2cyclictest34-21ksoftirqd/320:40:003
29149963,2cyclictest30992-21ssh00:20:473
29149963,2cyclictest29741-11brltty00:19:163
29149963,2cyclictest29561-21awk20:05:193
29149963,2cyclictest29561-21awk20:05:193
29149963,2cyclictest29272-21grep23:15:383
29149963,2cyclictest16071-21sh22:05:273
29149963,2cyclictest13911-21expr22:25:173
29149963,2cyclictest1167-21snmpd20:58:403
29149963,2cyclictest1167-21snmpd19:50:203
29149963,2cyclictest10406-21ssh23:25:083
29149963,1cyclictest0-21swapper/321:54:343
29149962,3cyclictest7590-21lldpd00:05:103
29149962,3cyclictest5957-21snmpd00:25:403
29149962,3cyclictest5957-21snmpd00:11:183
29149962,3cyclictest2997-21cat23:40:233
29149962,3cyclictest29826-21grep22:55:223
29149962,3cyclictest27332-21ntpq20:00:233
29149962,3cyclictest21454-21cat21:00:153
29149962,3cyclictest18591-21expr23:30:143
29149962,3cyclictest12940-21df22:45:153
29149962,3cyclictest1-21systemd19:56:283
29149962,3cyclictest1167-21snmpd22:32:553
29149962,3cyclictest1167-21snmpd21:11:523
29149962,3cyclictest1167-21snmpd21:05:103
29149962,3cyclictest1167-21snmpd20:26:363
29149962,3cyclictest1167-21snmpd20:15:273
29149962,3cyclictest1167-21snmpd19:45:113
29149962,3cyclictest1167-21snmpd19:43:233
29149962,3cyclictest1167-21snmpd19:10:493
29149962,2cyclictest283-21systemd-journal00:31:473
29149961,3cyclictest4611-21rm22:40:123
29149960,6cyclictest0-21swapper/321:56:333
29149960,4cyclictest283-21systemd-journal19:25:333
29149960,2cyclictest5511-21cpuspeed19:15:013
29149960,0cyclictest0-21swapper/321:47:033
29149960,0cyclictest0-21swapper/321:27:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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