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2019-07-17 - 00:27

AMD E1-2100 APU with Radeon(TM) HD Graphics, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #9, slot #1
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 20 highest latencies:
System rack9slot1.osadl.org (updated Mon Apr 15, 2019 12:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811150,0rcu_preempt7239-21at-spi-registry09:30:240
811130,0rcu_preempt27309-21kworker/0:109:57:340
811100,0rcu_preempt27743-21ssh11:31:270
811100,0rcu_preempt12081-21ssh11:53:560
811090,0rcu_preempt7260-21gdm-simple-gree11:06:400
811090,0rcu_preempt7260-21gdm-simple-gree10:16:180
811090,0rcu_preempt20555-21ssh10:36:470
811080,0rcu_preempt7260-21gdm-simple-gree09:06:290
811080,0rcu_preempt24557-21ssh12:12:350
811070,0rcu_preempt7260-21gdm-simple-gree10:24:200
811070,0rcu_preempt24719-21ssh11:27:420
811070,0rcu_preempt11962-1kworker/0:1H10:29:490
2111070,0ktimersoftd/172815pulseaudio12:15:531
811060,0rcu_preempt7127-21Xorg10:39:520
811060,0rcu_preempt16614-21ssh09:02:390
811050,0rcu_preempt7260-21gdm-simple-gree10:08:480
811050,0rcu_preempt3-21ksoftirqd/008:13:080
811040,0rcu_preempt7127-21Xorg11:12:570
811030,0rcu_preempt3392-21rm11:42:570
811030,0rcu_preempt31659-21ssh09:22:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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