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2022-06-27 - 16:52

x86 Intel Celeron N3350 @1100 MHz, Linux 5.10.90-rt60 (Profile)

Latency plot of system in rack #c, slot #4
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 50 highest latencies:
System rackcslot4.osadl.org (updated Mon Jun 27, 2022 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22979372316275,26sleep00-21swapper/007:05:350
22980662264191,51sleep10-21swapper/107:06:591
229846099229223,4cyclictest2302505-21kworker/u8:007:23:551
229845799593,7cyclictest2392652-21apt-get10:10:130
229845799592,7cyclictest2450488-21apt-get11:30:180
172099580,4rtkit-daemon1719-21rtkit-daemon11:37:531
229845799572,5cyclictest2346197-21apt-get09:05:130
229845799570,5cyclictest2347977-21diskmemload10:57:070
229845799561,5cyclictest2330276-21apt-get08:25:110
229845799552,6cyclictest2340229-21apt-get08:50:140
229845799551,9cyclictest2471646-21ssh11:59:500
229845799551,7cyclictest2362984-21apt-get09:30:130
229845799551,5cyclictest2399850-21apt-get10:20:130
229845799542,6cyclictest2366732-21apt-get09:35:140
229845799542,5cyclictest2342209-21apt-get08:55:120
229845799541,5cyclictest2307188-21apt-get07:30:130
229845799541,10cyclictest2336265-21apt-get08:40:120
229845799532,6cyclictest2457381-21/usr/sbin/munin11:40:010
229845799522,5cyclictest2436090-21apt-get11:10:170
229845799522,5cyclictest2432483-21apt-get11:05:130
229845799521,9cyclictest2482597-21ssh12:15:110
229845799521,9cyclictest2317533-21apt-get07:55:110
229845799521,8cyclictest2409630-21ssh10:33:050
229845799521,8cyclictest2372934-21ssh09:43:100
229845799521,5cyclictest2309535-21apt-esm-hook07:35:190
229845799516,5cyclictest2298605-21apt-get07:10:120
229845799511,8cyclictest2498590-21ssh12:35:530
229845799511,8cyclictest2380320-21ssh09:53:160
229845799511,6cyclictest2321789-21apt-get08:05:130
229845799511,4cyclictest2355855-21apt-get09:20:130
229845799510,9cyclictest2463428-21ssh11:47:140
172099510,4rtkit-daemon1719-21rtkit-daemon12:01:460
24653662500,2sleep12465365-21if_enp2s011:50:191
229845799501,9cyclictest2419317-21ssh10:45:340
229845799501,7cyclictest2332260-21apt-get08:30:110
229845799501,5cyclictest2457676-21apt-esm-hook11:40:130
229845799500,8cyclictest2417152-21ssh10:44:090
172099500,5rtkit-daemon2336279-21apt-esm-hook08:40:141
229845799493,7cyclictest2328292-21apt-get08:20:120
229845799493,6cyclictest13-21ksoftirqd/010:05:230
229845799492,5cyclictest2489833-21sshd12:25:190
229845799490,9cyclictest2421754-21diskstats10:50:160
229845799490,8cyclictest2412306-21ssh10:36:050
172099490,4rtkit-daemon1719-21rtkit-daemon07:16:351
229845799489,4cyclictest0-21swapper/011:00:290
229845799488,3cyclictest0-21swapper/009:19:530
229845799483,8cyclictest2381676-21df09:55:220
229845799481,8cyclictest2440428-21ntp_states11:15:240
229845799481,5cyclictest2479021-21apt-get12:10:140
229845799480,10cyclictest2493676-21perl12:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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