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2022-10-04 - 03:39

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 highest latencies:
System rack6slot5.osadl.org (updated Mon Oct 03, 2022 12:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114909963353522,2810cyclictest21610-21kworker/0:007:12:160
109532778183,204sleep00-21swapper07:06:140
11490994601,444cyclictest24370-21diskmemload10:44:380
114909945189,348cyclictest22497-21ssh10:22:540
114909945050,213cyclictest13747-21apt-get11:17:070
114909944977,358cyclictest26391-21df11:46:310
114909944674,188cyclictest6614-21ssh09:45:030
114909944155,363cyclictest0-21swapper09:59:350
114909943978,188cyclictest11-21ksoftirqd/012:12:570
11490994394,374cyclictest8583-21strings08:25:480
114909943662,304cyclictest20474-21ssh11:33:280
11490994362,373cyclictest13525-21ssh12:33:160
11490994361,374cyclictest0-21swapper12:04:460
114909943532,403cyclictest0-21swapper08:47:100
114909943254,355cyclictest23919-21ssh11:41:030
114909943162,88cyclictest13-21rcuc/009:25:140
114909943044,201cyclictest9161-21munin-node09:50:330
114909942741,372cyclictest8676-21ssh09:49:330
114909942553,358cyclictest0-21swapper11:04:120
114909942458,352cyclictest28775-21ssh10:36:520
11490994240,248cyclictest31228-21ssh11:58:140
114909942033,364cyclictest4919-21runrttasks12:22:060
114909941745,358cyclictest9630-21ssh11:08:080
114909941656,346cyclictest357850irq/10-yenta10:09:570
114909941551,351cyclictest14584-21ssh10:04:030
114909941449,351cyclictest4277-21nmbd12:07:570
114909941132,379cyclictest15916-21runrttasks11:22:080
114909940751,341cyclictest18723-21ssh10:15:130
114909940655,351cyclictest0-21swapper07:43:070
114909940647,300cyclictest24370-21diskmemload11:39:350
114909940434,347cyclictest495-21ssh09:30:380
114909940431,373cyclictest0-21swapper08:18:590
114909940352,351cyclictest0-21swapper08:08:230
114909940255,347cyclictest0-21swapper07:48:370
114909940133,354cyclictest13516-21munin-node09:13:380
114909940130,357cyclictest7364-21ssh12:20:000
114909939934,365cyclictest0-21swapper07:53:120
114909939931,355cyclictest357850irq/10-yenta09:19:390
114909939834,350cyclictest4277-21nmbd08:22:420
114909939735,362cyclictest0-21swapper11:29:180
114909939535,360cyclictest0-21swapper09:39:190
114909939535,360cyclictest0-21swapper08:34:120
114909939434,360cyclictest0-21swapper09:03:460
114909939432,347cyclictest18469-21munin-node07:25:520
114909939429,365cyclictest0-21swapper08:42:270
114909939333,360cyclictest0-21swapper07:16:090
114909939331,362cyclictest0-21swapper09:05:350
114909939249,343cyclictest0-21swapper08:14:240
114909939231,361cyclictest0-21swapper08:03:500
114909939039,351cyclictest0-21swapper07:56:250
114909938931,288cyclictest961-21ssh10:48:330
114909938736,337cyclictest344350irq/10-eth011:14:340
114909938621,351cyclictest16597-21mailstats10:10:160
114909938435,280cyclictest4298-21snmpd07:24:070
114909938434,336cyclictest4919-21runrttasks08:57:560
114909938336,347cyclictest0-21swapper11:52:560
114909937434,153cyclictest23754-21nfs_client10:25:540
114909937420,339cyclictest14093-21ssh12:35:240
114909937032,278cyclictest24370-21diskmemload10:59:480
114909936735,332cyclictest26926-21ssh10:33:300
114909936635,89cyclictest21479-21awk07:35:260
114909936432,89cyclictest32752sleep010:54:230
114909936432,89cyclictest20929-21seq07:32:240
114909934483,202cyclictest11-21ksoftirqd/012:27:090
114909934136,305cyclictest0-21swapper08:50:530
114909933661,261cyclictest82050irq/10-i91509:20:160
114909933058,213cyclictest0-21swapper08:36:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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