Date: Fri, 07 Nov 2008 13:12:57 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-stable@freebsd.org Subject: Re: php-cgi frozen with sbwait when SMP enable Message-ID: <gf1bc5$lbu$1@ger.gmane.org> In-Reply-To: <d018a9bd0811070329s30b463b0m6885e1f568217b89@mail.gmail.com> References: <d018a9bd0811070329s30b463b0m6885e1f568217b89@mail.gmail.com>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig6ECDB7DC38DF427D6626AAB4 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Ken Chen wrote: > Hello, >=20 > I have 4 web servers with lighttpd to serve one web site with DNS load > sharing. On the 2 SMP-enable web servers, there will be many php-cgi f= rozen > in 'sbwait' state every day. It means the php-cgi stay in 'sbwait' stat= e, > and never be back to 'accept' or other state. If I restart them, there = will > be frozen php-cgi appear some hours later. You didn't give any information about your environment, specifically versions of FreeBSD, PHP and lighttpd you use, and in what way you use PHP (I'm guessing you're using FastCGI). > There is no problem on the other single CPU web servers which running s= ame > php scripts and same configuration and version of PHP. >=20 > Why and any solution? AFAIK sbwait is socket buffer wait, meaning the process is waiting for some data over a socket (and, in your case, it's not getting it). I'm using php-cgi in FastCGI mode (with mod_fcgid on Apache) on about a dozen servers, all SMP, without problems. Some Apaches are worker-threaded and some use the event MPM. It very much looks like your problem could be a bug in lighttpd. --------------enig6ECDB7DC38DF427D6626AAB4 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJFDDJldnAQVacBcgRAsaiAKCh+G89mwxc7waBKPZoygPY39IDvgCg1vxw nTTcn0aQajNGXfC7nWqFvkY= =3jx+ -----END PGP SIGNATURE----- --------------enig6ECDB7DC38DF427D6626AAB4--
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