Date: Thu, 10 Sep 2015 19:45:59 +0300 From: Dmitry Sivachenko <trtrmitya@gmail.com> To: FreeBSD Net <freebsd-net@freebsd.org> Subject: netisr process eats 100% cpu Message-ID: <C4039E45-3DC7-4E1A-9E46-853FE812B906@gmail.com>
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Hello!
I am using fresh FreeBSD-10/stable.
I have a program which establish a TCP connection to server and sends a lot of small requests over it.
I put haproxy load balancer working in TCP mode in the middle, which listens some port on localhost.
Under the relatively low network load (20MB/sec, ~100 kpps), netisr process starts to consume close to 100% CPU, and does not allow to utilize more network bandwidth:
11 root -72 - 0K 944K CPU27 27 0:34 98.06% intr{swi1: netisr 0}
If I do not pass traffic through haproxy but connect directly to remote server, netisr process consumes 0% CPU and everything works well.
Is it rather expected or this can be fixed?
Thanks in advance.
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