Running out of filedescriptors

["Carlos Martínez-Troncoso C." <cmartinez@xxxxxxxxxxxxxxx>]

Hello Squid friends.

Recently I found in my cache.log this message:
  
   WARNING! Your cache is running out of filedescriptors

I found in the same file that Squid was using 1024 filedescriptors
  
I looked for that problem in the forum and FAQ and these are my steps to 
resolve that:

(I have Red Hat Enterprise 3 Update 8, kernel 2.4.21-47.ELsmp, I have 
Squid installed
from squid-2.5.STABLE14-1.FC5.i386.src.rpm)

Before compile src.rpm I changed these values:
  
   ulimit -HSn 8192

In the compilation I found:

   checking for strerror... yes
   checking for initgroups... yes
   checking Default FD_SETSIZE value... 8192
   checking Maximum number of filedescriptors we can open... 8192
   checking Default UDP send buffer size... 65535
   checking Default UDP receive buffer size... 65535

I reinstalled Squid with the new rpm:
  
   rpm -Uvh --force squid-2.5.STABLE14-1.FC5.i386.rpm
  
Squid is installed fine, the binary has a new date:
  
   -rwxr-xr-x    1 root     root       745108 Sep 24 08:25 /usr/sbin/squid

I changed the /etc/rc.d/init.d/squid start section:
  
   echo -n "Asignando 8192 FD y otros valores"
   echo 1024 32768 > /proc/sys/net/ipv4/ip_local_port_range
   echo 1024 > /proc/sys/net/ipv4/tcp_max_syn_backlog
   echo 8192 > /proc/sys/fs/file-max
   ulimit -HSn 8192

   echo -n $"Starting $prog: "
   $SQUID $SQUID_OPTS 2> /dev/null
   RETVAL=$?

I started Squid but in cache.log I found again:
  
   With 1024 file descriptors available
  
Which is the missing or bad step?

I was reading the spec for squid-2.5.STABLE14-1.FC5.i386.src.rpm and I 
found that file has a patch
for filedescriptors (option --enable-fd-config), this is the problem or 
solution?

My squid -v:
  
   Squid Cache: Version 2.5.STABLE14
   configure options:  --host=i686-redhat-linux-gnu 
--build=i686-redhat-linux-gnu --target=i386-redhat-linux-gnu
   --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin 
--sbindir=/usr/sbin --sysconfdir=/etc
   --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib 
--libexecdir=/usr/libexec --localstatedir=/var
   --sharedstatedir=/usr/com --mandir=/usr/share/man 
--infodir=/usr/share/info --exec_prefix=/usr
   --bindir=/usr/sbin --libexecdir=/usr/lib/squid --localstatedir=/var 
--datadir=/usr/share
   --sysconfdir=/etc/squid --enable-poll --enable-snmp 
--enable-removal-policies=heap,lru
   --enable-storeio=aufs,coss,diskd,null,ufs --enable-ssl 
--with-openssl=/usr/kerberos --enable-delay-pools
   --enable-linux-netfilter --with-pthreads 
--enable-ntlm-auth-helpers=SMB,winbind,fakeauth
   
--enable-external-acl-helpers=ip_user,ldap_group,unix_group,wbinfo_group,winbind_group 

   --enable-auth=basic,digest,ntlm 
--enable-digest-auth-helpers=password --with-winbind-auth-challenge
   --enable-useragent-log --enable-referer-log 
--disable-dependency-tracking --enable-cachemgr-hostname=localhost
   --enable-underscores 
--enable-basic-auth-helpers=LDAP,MSNT,NCSA,PAM,SMB,YP,getpwnam,multi-domain-NTLM,SASL,winbind 

   --enable-cache-digests --enable-ident-lookups --with-large-files 
--enable-fd-config
   --enable-follow-x-forwarded-for
  
Thanks for your help

Carlos