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2022-06-30 - 18:33

x86 Intel Celeron M @1500 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, slot #5
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 -a0 -t1 -p99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack6slot5.osadl.org (updated Tue Jun 28, 2022 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120589985054476,4026cyclictest1294-21kworker/0:007:11:560
116872811186,203sleep00-21swapper07:07:350
120589950935,459cyclictest19950-21seq10:10:570
120589949836,447cyclictest11-21ksoftirqd/009:18:370
120589949535,399cyclictest6341-21ssh09:40:370
120589948835,383cyclictest11061-21ssh12:25:470
120589948634,439cyclictest14839-21ssh11:18:000
120589948633,439cyclictest3843-21ssh12:07:360
120589948533,439cyclictest10074-21ssh12:23:540
120589948532,439cyclictest2257-21ssh10:47:300
120589948436,435cyclictest11-21ksoftirqd/008:56:280
120589948331,438cyclictest5468-21ssh09:38:230
120589946032,358cyclictest16551-21ssh10:03:400
120589944631,401cyclictest24966-21diskmemload11:36:500
120589944631,233cyclictest11896-21ssh09:52:290
120589944573,359cyclictest4305-21sed10:51:400
120589943171,347cyclictest360150irq/10-yenta08:15:040
120589943035,381cyclictest31475-21runrttasks08:00:140
120589942937,378cyclictest12048-21cyclictest10:29:310
120589942243,318cyclictest10505-21unixbench-2d11:06:280
120589942149,87cyclictest24966-21diskmemload11:40:430
120589941938,366cyclictest4915-21runrttasks08:06:260
120589941841,316cyclictest12692-21ntp_states12:30:270
120589941441,359cyclictest1726-21ssh12:03:110
120589941438,316cyclictest5951-21ssh10:56:040
120589941432,367cyclictest21402-21tr09:00:180
120589941134,363cyclictest5107-21rm12:10:460
120589941036,314cyclictest13574-21rm09:56:170
120589940943,305cyclictest12048-21cyclictest09:10:270
120589940838,311cyclictest29395-21kworker/u2:011:12:470
120589940834,360cyclictest29395-21kworker/u2:010:40:030
120589940831,362cyclictest27200-21ssh10:30:100
120589940735,311cyclictest6990-21cat12:15:430
120589940734,313cyclictest12511-21awk08:35:300
120589940655,337cyclictest24966-21diskmemload11:34:040
120589940633,313cyclictest24966-21diskmemload12:35:290
120589940631,314cyclictest29639-21df09:20:260
120589940622,88cyclictest11-21ksoftirqd/007:51:450
120589940622,324cyclictest9138-21sendmail-mta09:46:170
120589940432,310cyclictest15887-21apt-get07:17:050
120589940252,111cyclictest24966-21diskmemload11:51:430
120589940235,307cyclictest13-21rcuc/010:17:400
120589940231,357cyclictest32269-21ssh11:59:310
120589940137,350cyclictest29395-21kworker/u2:010:43:300
120589940132,309cyclictest19164-21python07:25:530
120589940033,298cyclictest15751-21chrt11:20:380
120589939934,351cyclictest27666-21seq11:47:450
120589939919,310cyclictest15959-21sed08:45:190
120589939518,316cyclictest14732-21needreboot08:40:420
120589939435,359cyclictest0-21swapper08:34:450
120589939240,292cyclictest4915-21runrttasks11:28:270
120589939234,118cyclictest32358-21ssh09:25:530
120589939218,304cyclictest8004-21switchtime11:00:530
120589939152,163cyclictest24966-21diskmemload09:30:520
120589939133,298cyclictest23698-21apt07:40:010
120589939133,297cyclictest4915-21runrttasks10:05:550
120589939034,292cyclictest8481-21ntp_states08:25:180
120589938934,295cyclictest4915-21runrttasks08:15:270
120589938834,340cyclictest24472-21ssh10:22:320
120589938834,339cyclictest29566-21munin-node07:56:050
120589938733,340cyclictest24050-21strings09:06:010
120589938435,349cyclictest0-21swapper08:22:470
120589938431,292cyclictest16646-21munin-node07:20:250
120589938335,288cyclictest3748-19ntpd07:30:560
120589938234,288cyclictest4239-21lldpd07:41:370
120589937921,297cyclictest17782-21df08:50:180
120589937215,117cyclictest26837-21df07:46:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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