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2022-07-05 - 02:09

ARM TI AM3354 @800 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #4, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 rack4slot2.osadl.org (updated Tue Jul 05, 2022 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74502540,0irq/46-4a1000003845-1kworker/u3:118:55:470
5908998048,0cyclictest0-21swapper20:39:490
5908998045,0cyclictest0-21swapper23:41:530
5908997855,0cyclictest0-21swapper19:06:280
5908997853,0cyclictest0-21swapper21:03:370
5908997845,0cyclictest0-21swapper22:21:360
5908997757,0cyclictest9559-21ls19:09:130
5908997753,0cyclictest0-21swapper20:47:540
5908997753,0cyclictest0-21swapper20:38:250
5908997752,0cyclictest0-21swapper21:13:370
5908997744,0cyclictest0-21swapper23:31:510
5908997653,0cyclictest0-21swapper22:46:170
5908997646,0cyclictest0-21swapper19:56:050
5908997643,0cyclictest0-21swapper21:36:270
5908997551,0cyclictest0-21swapper21:49:300
5908997442,0cyclictest0-21swapper20:06:090
7450730,0irq/46-4a10000022830-21apt-get21:23:380
5908997355,0cyclictest9686-21fschecks_time23:54:050
5908997351,0cyclictest0-21swapper22:08:370
5908997347,0cyclictest0-21swapper20:32:180
5908997346,0cyclictest0-21swapper19:28:500
5908997343,0cyclictest0-21swapper22:43:360
5908997339,0cyclictest0-21swapper22:53:410
5908997251,0cyclictest0-21swapper19:50:290
5908997154,0cyclictest4774-21ntp_states22:04:290
5908997147,0cyclictest1108-21runrttasks21:54:080
5908997146,0cyclictest15781-21tr19:28:280
5908997143,0cyclictest3251-21/usr/sbin/munin20:24:350
7450700,0irq/46-4a1000006484-1kworker/u3:322:13:390
5908997057,0cyclictest7350irq/45-4a10000020:49:160
5908997055,0cyclictest0-21swapper21:19:360
5908997043,0cyclictest8113-21/usr/sbin/munin23:49:170
5908996952,0cyclictest21816-21runrttasks19:44:290
5908996943,0cyclictest28079-21/usr/sbin/munin21:38:490
5908996941,0cyclictest0-21swapper21:29:080
5908996941,0cyclictest0-21swapper19:01:150
5908996935,0cyclictest11104-21diskstats19:14:010
5908996855,0cyclictest7350irq/45-4a10000023:44:420
5908996845,0cyclictest10972-21apt-get23:58:440
5908996844,0cyclictest18865-21sed00:19:360
5908996844,0cyclictest0-21swapper20:18:390
5908996843,0cyclictest0-21swapper23:09:440
5908996842,0cyclictest0-21swapper22:49:450
5908996841,0cyclictest0-21swapper19:59:370
5908996840,0cyclictest0-21swapper21:12:120
5908996748,0cyclictest19853-21if_eth019:39:130
5908996745,0cyclictest32097-21seq20:14:290
5908996740,0cyclictest0-21swapper23:19:400
5908996733,0cyclictest11839-21switchtime22:24:340
5908996652,0cyclictest0-21swapper23:03:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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