Haproxy consuming 100% cpu

@elderone1 wrote:

My Haproxy 1.7.9 instance is using 100% of cpu core - for 10-50min, then all goes to normal.

chart2.png1258x446 16 KB

Couple of mbit/s of traffic.

haproxy -vvv
HA-Proxy version 1.7.9 2017/08/18
Copyright 2000-2017 Willy Tarreau <willy@haproxy.org>

Build options :
  TARGET  = linux2628
  CPU     = native
  CC      = gcc
  CFLAGS  = -O2 -march=native -g -fno-strict-aliasing -Wdeclaration-after-statement -fwrapv
  OPTIONS = USE_ZLIB=1 USE_OPENSSL=1 USE_STATIC_PCRE=1 USE_TFO=1

Default settings :
  maxconn = 2000, bufsize = 16384, maxrewrite = 1024, maxpollevents = 200

Encrypted password support via crypt(3): yes
Built with zlib version : 1.2.8
Running on zlib version : 1.2.8
Compression algorithms supported : identity("identity"), deflate("deflate"), raw-deflate("deflate"), gzip("gzip")
Built with OpenSSL version : OpenSSL 1.0.2g  1 Mar 2016
Running on OpenSSL version : OpenSSL 1.0.2g  1 Mar 2016
OpenSSL library supports TLS extensions : yes
OpenSSL library supports SNI : yes
OpenSSL library supports prefer-server-ciphers : yes
Built with PCRE version : 8.38 2015-11-23
Running on PCRE version : 8.38 2015-11-23
PCRE library supports JIT : no (USE_PCRE_JIT not set)
Built without Lua support
Built with transparent proxy support using: IP_TRANSPARENT IPV6_TRANSPARENT IP_FREEBIND

Available polling systems :
      epoll : pref=300,  test result OK
       poll : pref=200,  test result OK
     select : pref=150,  test result OK
Total: 3 (3 usable), will use epoll.

Available filters :
        [COMP] compression
        [TRACE] trace
        [SPOE] spoe

Runnig on Ubuntu 16.04

Trace from haproxy process consuming whole core:

No errors in debug log.

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