Re: [PATCH] softirq: let ksoftirqd do its job
From: Peter Zijlstra <peterz@infradead.org>
Date: 2016-09-01 11:54:01
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On Thu, Sep 01, 2016 at 01:02:31PM +0200, Jesper Dangaard Brouer wrote:
PID S %CPU TIME+ COMMAND
3 R 50.0 29:02.23 ksoftirqd/0
10881 R 10.7 1:01.61 udp_sink
10837 R 10.0 1:05.20 udp_sink
10852 S 10.0 1:01.78 udp_sink
10862 R 10.0 1:05.19 udp_sink
10844 S 9.7 1:01.91 udp_sink
This is strange, why is ksoftirqd/0 getting 50% of the CPU time???Do you run your udp_sink thingy in a cpu-cgroup?