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2023-01-30 - 06:53

x86 Intel Core i7-3770K @3500 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #2
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 -a4-7 -p99 -i200 -h400 -t4 -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 50 highest latencies:
System rack0slot2.osadl.org (updated Mon Jan 30, 2023 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1959386991512,2cyclictest2168995-21kthreadcore20:38:587
195938699150,14cyclictest1696195-21snmpd20:00:597
1959386991412,1cyclictest2585948-21ntp_states23:34:077
1959385991313,0cyclictest0-21swapper/622:27:136
195938299130,13cyclictest0-21swapper/421:24:374
195938299130,12cyclictest0-21swapper/423:03:284
1959386991212,0cyclictest0-21swapper/721:25:197
1959386991212,0cyclictest0-21swapper/720:49:317
1959385991212,0cyclictest0-21swapper/621:25:256
195938599120,0cyclictest0-21swapper/623:34:136
195938599120,0cyclictest0-21swapper/622:59:516
195938699110,8cyclictest94014-21systemd-journal19:54:377
195938699110,2cyclictest2334545-21cat21:53:337
195938699110,10cyclictest1696195-21snmpd22:24:397
195938699110,10cyclictest1696195-21snmpd19:14:287
195938699110,10cyclictest1696195-21snmpd00:01:387
1959385991111,0cyclictest0-21swapper/623:58:496
1959385991111,0cyclictest0-21swapper/620:49:106
1959385991111,0cyclictest0-21swapper/620:11:386
195938399110,11cyclictest0-21swapper/521:26:225
195938399110,11cyclictest0-21swapper/520:12:165
1959386991010,0cyclictest0-21swapper/719:21:247
195938699100,9cyclictest2213083-21latency_hist21:03:337
195938699100,9cyclictest2102212-21/usr/sbin/munin20:08:577
195938699100,2cyclictest2493841-21kthreadcore22:58:517
195938699100,2cyclictest2431678-21sed22:33:327
195938699100,1cyclictest94014-21systemd-journal20:23:337
195938699100,1cyclictest2613367-40updatedb23:48:337
1959385991010,0cyclictest0-21swapper/620:03:266
1959383991010,0cyclictest0-21swapper/520:49:295
1959382991010,0cyclictest0-21swapper/420:03:254
1959382991010,0cyclictest0-21swapper/419:53:484
1959382991010,0cyclictest0-21swapper/419:21:204
1959382991010,0cyclictest0-21swapper/400:03:034
383188990,0rtkit-daemon0-21swapper/523:59:595
19593869990,8cyclictest2395310-21latency_hist22:18:337
19593869990,8cyclictest2286097-21latency_hist21:33:337
19593869990,8cyclictest2286097-21latency_hist21:33:337
19593869990,8cyclictest2151435-21idleruntime-cro20:33:337
19593869990,8cyclictest1969517-21sed19:03:337
19593869990,2cyclictest2528558-21latency_hist23:13:337
19593869990,2cyclictest2201299-21latency_hist20:58:337
19593869990,2cyclictest2121943-21sed20:18:337
19593869990,1cyclictest68-21ksoftirqd/720:28:337
19593859999,0cyclictest0-21swapper/619:20:336
19593829999,0cyclictest0-21swapper/423:35:194
19593829999,0cyclictest0-21swapper/422:27:224
19593869980,7cyclictest2710558-21exim400:28:337
19593869980,7cyclictest2455759-21perf22:43:327
19593869980,7cyclictest2407130-21ssh22:23:337
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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