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2022-06-26 - 12:32

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 alll highest latencies:
System rack6slot5.osadl.org (updated Sun Jun 26, 2022 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228339947602559,2198cyclictest10473-21kworker/0:019:12:060
226542747183,203sleep00-21swapper19:09:110
228339948632,439cyclictest12-21rcu_preempt21:58:240
228339948035,431cyclictest12-21rcu_preempt23:36:000
228339948033,424cyclictest6764-21apt-get21:17:270
228339947640,374cyclictest3249-21diskmemload21:52:520
228339947531,430cyclictest27635-21apt-get23:17:160
228339947231,441cyclictest13903-21ssh23:59:340
228339947032,422cyclictest206022chrt20:28:270
228339946847,246cyclictest20860-21ssh23:02:050
228339946532,372cyclictest4696-21ssh21:13:000
228339946432,372cyclictest3249-21diskmemload22:00:150
228339946334,359cyclictest11551-21ssh23:54:080
228339946332,361cyclictest1939-21gltestperf22:20:290
228339946331,372cyclictest24323-21chrt20:38:280
228339946231,418cyclictest11-21ksoftirqd/022:50:490
228339946031,359cyclictest14178-21ssh22:47:340
22833994261,363cyclictest2287-21ssh23:33:420
228339942039,370cyclictest5038-21python22:26:090
228339941621,392cyclictest5325-21df23:40:310
228339941237,375cyclictest0-21swapper21:00:120
228339941231,366cyclictest21702-21ssh23:05:170
228339941220,87cyclictest8081-21seq23:45:480
228339940932,363cyclictest32404-21mailstats22:15:200
228339940332,357cyclictest4319-21snmpd22:06:550
228339940233,354cyclictest16701-21apt-get20:17:120
228339940132,356cyclictest8390-21ssh22:34:590
228339939832,350cyclictest635-21df_inode19:35:260
228339939732,351cyclictest17096-21tr00:06:220
228339939731,352cyclictest14534-21df20:10:570
228339939622,360cyclictest6305-21kworker/u2:321:29:460
228339939615,312cyclictest10176-21sh22:40:010
228339939541,339cyclictest24402-21rm00:23:100
228339939532,348cyclictest345350irq/10-eth000:17:110
228339939531,350cyclictest30651-21munin-node23:26:250
228339939531,350cyclictest17957-21tr22:55:590
228339939531,350cyclictest169692chrt21:40:350
228339939232,345cyclictest30315-21ntp_states20:55:180
228339939118,359cyclictest16534-21date21:40:070
228339938960,269cyclictest9640-21ssh21:24:590
228339938960,268cyclictest2905-21expr19:40:360
228339938760,88cyclictest21060-21sed20:30:190
228339938756,268cyclictest4915-21runrttasks21:06:480
228339938655,270cyclictest30115-21ssh23:23:080
228339938633,339cyclictest11983-21ssh22:42:520
228339938632,340cyclictest4215-21kworker/u2:021:46:390
228339938631,341cyclictest29297-21python20:50:480
228339938354,268cyclictest8027-21sed19:55:190
228339938353,269cyclictest27167-21munin-node19:20:580
228339938235,333cyclictest3249-21diskmemload21:31:300
228339938231,339cyclictest15576-21ssh00:04:050
228339938035,345cyclictest0-21swapper22:14:450
228339937848,270cyclictest25554-21ssh23:12:520
228339937732,345cyclictest0-21swapper19:45:170
228339937431,282cyclictest18285-21ssh00:10:240
228339937132,278cyclictest3249-21diskmemload00:37:160
228339936835,89cyclictest24865-21munin-node19:15:180
228339936635,89cyclictest17288-21ntp_states20:20:170
228339936438,88cyclictest31496-21iostat19:30:310
228339936433,90cyclictest12-21rcu_preempt00:31:350
228339935032,258cyclictest26511-21mailstats20:45:120
22833993440,283cyclictest26356-21runrttasks00:26:450
228339934360,269cyclictest6435-21df_inode19:50:280
228339933659,262cyclictest10751-21missed_timers20:00:530
228339933452,267cyclictest4915-21runrttasks20:06:530
228339933159,258cyclictest29023-21munin-node19:25:370
228339933055,261cyclictest26376-21cron20:45:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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