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http://issues.apache.org/bugzilla/show_bug.cgi?id=44351 Summary: File descriptor leak when using prg RewriteMap Product: Apache httpd-2 Version: 2.2.8 Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: P3 Component: mod_rewrite AssignedTo: [email protected] ReportedBy: [EMAIL PROTECTED] Hi, There's a file descriptor leak in httpd under Linux when using mod_rewrite's RewriteMap with prg (external process). The first prg gets 3 fds (stdin, stdout, stderr). The second one gets 5 fds (stdin, stdout, stderr + 2 pipes). The third one gets 7 fds (stdin, stdout, stderr + 2 pipes + 2 pipes). and so on. Apache 2.2 spawns one process per prg. Apache 2.0 spawns one process per prg and per vhost. Under 2.0 with 85 vhosts and 6 external prg (my setup) gets thousands of fds, leading to an out of file descriptor error. This is highly limited with Apache 2.2 but the bug still exists. With Linux you can get the fd information under /proc/<pid>/fd/. Here is how I build Apache and a minimalistic httpd.conf that lets one reproduce the problem. ./configure --with-mpm=prefork --disable-maintainer-mode --disable-access --disable-auth --disable-include --disable-autoindex --disable-asis --disable-cgi --disable-negotiation --disable-dir --disable-imap --disable-actions --disable-userdir --disable-proxy-ftp --disable-proxy-connect --disable-setenvif --disable-env --disable-mime --disable-so --disable-alias --enable-headers --enable-proxy --enable-proxy-http --enable-rewrite --enable-ssl --enable-status LockFile var/httpd.lock PidFile var/httpd.pid User httpd Group httpd Listen *:80 RewriteEngine On RewriteLock var/lbsync.lock RewriteMap pool1 prg:/usr/local/lb/lb_1 RewriteMap pool2 prg:/usr/local/lb/lb_2 RewriteMap pool3 prg:/usr/local/lb/lb_3 <VirtualHost *> ServerName www.try1.com RewriteEngine On RewriteRule . http://${pool1:%{ENV:addr}}/$1 RewriteOptions inherit </VirtualHost> <VirtualHost *> ServerName www.try2.com RewriteEngine On RewriteRule . http://${pool2:%{ENV:addr}}/$1 RewriteOptions inherit </VirtualHost> <VirtualHost *> ServerName www.try3.com RewriteEngine On RewriteRule . http://${pool3:%{ENV:addr}}/$1 RewriteOptions inherit </VirtualHost> <VirtualHost *> ServerName www.try4.com RewriteEngine On RewriteRule . http://${pool1:%{ENV:addr}}/$1 RewriteOptions inherit </VirtualHost> <VirtualHost *> ServerName www.try5.com RewriteRule . http://${pool1:%{ENV:addr}}/$1 RewriteOptions inherit </VirtualHost> Regards, Charles -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
