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[Bug 1285097] Re: PCRE JIT doesn't work on trusty

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1285097@xxxxxxxxxxxxxxxxxx>
Date: Wed, 03 Dec 2014 05:35:23 -0000
Reply-to: Bug 1285097 <1285097@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: pcre3 (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1285097

Title:
  PCRE JIT doesn't work on trusty

Status in pcre3 package in Ubuntu:
  Confirmed

Bug description:
  Hello!

  I'm trying to utilize PCRE JIT on latest ubuntu trusty. Haproxy and
  nginx compile fine with PCRE JIT support, however JIT support doesn't
  work.

  Haproxy 1.5-dev22:
  --- snip ---
  HA-Proxy version 1.5-dev22-snapshot-20140225 2014/02/03
  Copyright 2000-2014 Willy Tarreau <w@xxxxxx>

  Build options :
    TARGET  = linux2628
    CPU     = generic
    CC      = gcc
    CFLAGS  = -O3 -pipe -fomit-frame-pointer -funroll-loops -g
    OPTIONS = USE_LINUX_SPLICE=1 USE_CTTPROXY=1 USE_LINUX_TPROXY=1 USE_LIBCRYPT=1 USE_GETADDRINFO=1 USE_ZLIB=1 USE_CPU_AFFINITY=1 USE_REGPARM=1 USE_OPENSSL=1 USE_STATIC_PCRE=1 USE_PCRE_JIT=1 USE_TFO=1

  Default settings :
    maxconn = 2000, bufsize = 16384, maxrewrite = 8192, maxpollevents = 200

  Encrypted password support via crypt(3): yes
  Built with zlib version : 1.2.8
  Compression algorithms supported : identity, deflate, gzip
  Built with OpenSSL version : OpenSSL 1.0.1f 6 Jan 2014
  Running on OpenSSL version : OpenSSL 1.0.1f 6 Jan 2014
  OpenSSL library supports TLS extensions : yes
  OpenSSL library supports SNI : yes
  OpenSSL library supports prefer-server-ciphers : yes
  Built with PCRE version : 8.31 2012-07-06
  PCRE library supports JIT : no (libpcre build without JIT?)
  Built with transparent proxy support using: CTTPROXY IP_TRANSPARENT IPV6_TRANSPARENT IP_FREEBIND
  --- snip ---

  Nginx 1.5.10:
  --- snip ---
  nginx: [warn] PCRE library does not support JIT in /etc/nginx/extra/nginx-main.conf:23
  nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
  nginx: configuration file /etc/nginx/nginx.conf test is successful
  --- snip ---

  I think that PCRE jit can have serious performance advantage with
  software that can utilize it (heavy loaded nginx/haproxy instances
  with lots of pcre rules).

  For performance comparisions see:
  http://sljit.sourceforge.net/regex_perf.html

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