[rt-users] Help - memory leak problems
Barry Byrne
barry.byrne at wbtsystems.com
Fri Oct 17 06:08:06 EDT 2003
I've had the same problems, and try to get around it by restarting Apache
with a cron job on a daily basis. However last night, ran out of swap again
and sendmail kept tempfailing a mail with an attachment (about 1.5MB) which
resulted in 70 copies of the attachment in the RT database - making it
practically impossible to open the ticket in RT. I've remove the attachments
this morning, and I've also try removing DBI from the apache config and
reducing the number of MaxRequestsPerChild. Will see what affect this has.
Cheers,
Barry
--
Barry Byrne, IT Manager,
WBT Systems, Block 2, Harcourt Centre
Harcourt Street, Dublin 2, Ireland
> -----Original Message-----
> From: rt-users-admin at lists.fsck.com
> [mailto:rt-users-admin at lists.fsck.com]On Behalf Of
> douglas.borrie at eject.co.za
> Sent: 17 October 2003 10:25
> To: Ruslan U. Zakirov
> Cc: rt-users at lists.fsck.com
> Subject: Re: [rt-users] Help - memory leak problems
>
>
> This is complete apache config
>
> ServerType standalone
> ServerRoot "/usr/local/apache_1.3.28"
> PidFile /usr/local/apache_1.3.28/logs/httpd.pid
> ScoreBoardFile /usr/local/apache_1.3.28/logs/httpd.scoreboard
> Timeout 300
> KeepAlive On
> MaxKeepAliveRequests 100
> KeepAliveTimeout 15
> MinSpareServers 5
> MaxSpareServers 10
> StartServers 5
> MaxClients 50
> MaxRequestsPerChild 0
> Port 80
> User nobody
> Group nobody
> ServerAdmin serveradmin at host.domain.name
> ServerName host.domain.name
> DocumentRoot "/usr/local/apache_1.3.28/htdocs"
>
> <Directory />
> Options FollowSymLinks
> AllowOverride None
> </Directory>
>
> <Directory "/usr/local/apache_1.3.28/htdocs">
> Options Indexes FollowSymLinks MultiViews
> AllowOverride None
> Order allow,deny
> Allow from all
> </Directory>
>
> <IfModule mod_userdir.c>
> UserDir public_html
> </IfModule>
>
> <IfModule mod_dir.c>
> DirectoryIndex index.html
> </IfModule>
>
> AccessFileName .htaccess
> <Files ~ "^\.ht">
> Order allow,deny
> Deny from all
> Satisfy All
> </Files>
>
> UseCanonicalName On
>
> <IfModule mod_mime.c>
> TypesConfig /usr/local/apache_1.3.28/conf/mime.types
> </IfModule>
>
> DefaultType text/plain
>
> <IfModule mod_mime_magic.c>
> MIMEMagicFile /usr/local/apache_1.3.28/conf/magic
> </IfModule>
>
> HostnameLookups Off
>
> ErrorLog /usr/local/apache_1.3.28/logs/error_log
> LogLevel warn
> LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\""
> combined
> LogFormat "%h %l %u %t \"%r\" %>s %b" common
> LogFormat "%{Referer}i -> %U" referer
> LogFormat "%{User-agent}i" agent
> CustomLog /usr/local/apache_1.3.28/logs/access_log common
>
> ServerSignature Off
>
> <IfModule mod_alias.c>
> Alias /icons/ "/usr/local/apache_1.3.28/icons/"
> <Directory "/usr/local/apache_1.3.28/icons">
> Options Indexes MultiViews
> AllowOverride None
> Order allow,deny
> Allow from all
> </Directory>
>
> Alias /manual/ "/usr/local/apache_1.3.28/htdocs/manual/"
> <Directory "/usr/local/apache_1.3.28/htdocs/manual">
> Options Indexes FollowSymlinks MultiViews
> AllowOverride None
> Order allow,deny
> Allow from all
> </Directory>
>
> ScriptAlias /cgi-bin/ "/usr/local/apache_1.3.28/cgi-bin/"
> <Directory "/usr/local/apache_1.3.28/cgi-bin">
> AllowOverride None
> Options None
> Order allow,deny
> Allow from all
> </Directory>
> </IfModule>
>
> <IfModule mod_autoindex.c>
> IndexOptions FancyIndexing
> AddIconByEncoding (CMP,/icons/compressed.gif) x-compress x-gzip
> AddIconByType (TXT,/icons/text.gif) text/*
> AddIconByType (IMG,/icons/image2.gif) image/*
> AddIconByType (SND,/icons/sound2.gif) audio/*
> AddIconByType (VID,/icons/movie.gif) video/*
>
> AddIcon /icons/binary.gif .bin .exe
> AddIcon /icons/binhex.gif .hqx
> AddIcon /icons/tar.gif .tar
> AddIcon /icons/world2.gif .wrl .wrl.gz .vrml .vrm .iv
> AddIcon /icons/compressed.gif .Z .z .tgz .gz .zip
> AddIcon /icons/a.gif .ps .ai .eps
> AddIcon /icons/layout.gif .html .shtml .htm .pdf
> AddIcon /icons/text.gif .txt
> AddIcon /icons/c.gif .c
> AddIcon /icons/p.gif .pl .py
> AddIcon /icons/f.gif .for
> AddIcon /icons/dvi.gif .dvi
> AddIcon /icons/uuencoded.gif .uu
> AddIcon /icons/script.gif .conf .sh .shar .csh .ksh .tcl
> AddIcon /icons/tex.gif .tex
> AddIcon /icons/bomb.gif core
>
> AddIcon /icons/back.gif ..
> AddIcon /icons/hand.right.gif README
> AddIcon /icons/folder.gif ^^DIRECTORY^^
> AddIcon /icons/blank.gif ^^BLANKICON^^
>
> DefaultIcon /icons/unknown.gif
> ReadmeName README
> HeaderName HEADER
> </IfModule>
>
> <IfModule mod_mime.c>
> AddLanguage da .dk
> AddLanguage nl .nl
> AddLanguage en .en
> AddLanguage et .ee
> AddLanguage fr .fr
> AddLanguage de .de
> AddLanguage el .el
> AddLanguage he .he
> AddCharset ISO-8859-8 .iso8859-8
> AddLanguage it .it
> AddLanguage ja .ja
> AddCharset ISO-2022-JP .jis
> AddLanguage kr .kr
> AddCharset ISO-2022-KR .iso-kr
> AddLanguage nn .nn
> AddLanguage no .no
> AddLanguage pl .po
> AddCharset ISO-8859-2 .iso-pl
> AddLanguage pt .pt
> AddLanguage pt-br .pt-br
> AddLanguage ltz .lu
> AddLanguage ca .ca
> AddLanguage es .es
> AddLanguage sv .sv
> AddLanguage cs .cz .cs
> AddLanguage ru .ru
> AddLanguage zh-TW .zh-tw
> AddCharset Big5 .Big5 .big5
> AddCharset WINDOWS-1251 .cp-1251
> AddCharset CP866 .cp866
> AddCharset ISO-8859-5 .iso-ru
> AddCharset KOI8-R .koi8-r
> AddCharset UCS-2 .ucs2
> AddCharset UCS-4 .ucs4
> AddCharset UTF-8 .utf8
>
> <IfModule mod_negotiation.c>
> LanguagePriority en da nl et fr de el it ja kr no pl pt
> pt-br ru ltz ca
> es sv tw
> </IfModule>
> AddType application/x-tar .tgz
> AddEncoding x-compress .Z
> AddEncoding x-gzip .gz .tgz
> </IfModule>
> <IfModule mod_setenvif.c>
> BrowserMatch "Mozilla/2" nokeepalive
> BrowserMatch "MSIE 4\.0b2;" nokeepalive downgrade-1.0
> force-response-1.0
> BrowserMatch "RealPlayer 4\.0" force-response-1.0
> BrowserMatch "Java/1\.0" force-response-1.0
> BrowserMatch "JDK/1\.0" force-response-1.0
> </IfModule>
>
> NameVirtualHost *
> <VirtualHost host.domain.name>
> ServerName host.domain.name
> DocumentRoot /opt/rt3/share/html
> AddDefaultCharset UTF-8
> PerlRequire /opt/rt3/bin/webmux.pl
> <Location />
> SetHandler perl-script
> PerlHandler RT::Mason
> </Location>
> </VirtualHost>
>
> Quoting "Ruslan U. Zakirov" <cubic at acronis.ru>:
>
> > douglas.borrie at eject.co.za wrote:
> > Look through all config not only VirtualHost section.
> >
> > > This was my previous config
> > >
> > > <VirtualHost host.domain.name>
> > > ServerName host.domain.name
> > > DocumentRoot /opt/rt3/share/html
> > > AddDefaultCharset UTF-8
> > >
> > > PerlModule Apache::DBI
> > > PerlRequire /opt/rt3/bin/webmux.pl
> > >
> > > <Location />
> > > SetHandler perl-script
> > > PerlHandler RT::Mason
> > > </Location>
> > > </VirtualHost>
> > >
> > > I changed it to this (is this what you meant by turning off
> Apache::DBI?)
> > >
> > > <VirtualHost host.domain.name>
> > > ServerName host.domain.name
> > > DocumentRoot /opt/rt3/share/html
> > > AddDefaultCharset UTF-8
> > >
> > > PerlRequire /opt/rt3/bin/webmux.pl
> > >
> > > <Location />
> > > SetHandler perl-script
> > > PerlHandler RT::Mason
> > > </Location>
> > > </VirtualHost>
> > >
> > > If that is what you meant, then yes the issue is still there.
> > >
> > >
> > > Quoting Jesse Vincent <jesse at bestpractical.com>:
> > >
> > >
> > >>Do you still see this issue if you turn off Apache::DBI?
> > >>
> > >>
> > >>On Fri, Oct 17, 2003 at 10:19:28AM +0200, douglas.borrie at eject.co.za
> > wrote:
> > >>
> > >>>Hi all
> > >>>
> > >>>I recently installed RT 3.0.4 (and later RT 3.0.6) using
> apache 1.3.28
> > and
> > >>>mod_perl 1.29 statically linked.
> > >>>I followed all the installation instructions and have
> installed it on a
> > >>
> > >>Solaris
> > >>
> > >>>2.6 as well as a Redhat Linux 9
> > >>>box but with the same problem occuring on both.
> > >>>The problem appears to be some sort of memory leak where memory is
> > >>
> > >>allocated but
> > >>
> > >>>is never released.
> > >>>The size of the httpd processes grow after every request.
> > >>>The end result is that all RAM is consumed and after a while
> all swap is
> > >>
> > >>also
> > >>
> > >>>exhausted.
> > >>>
> > >>>Below are samples taken of the relevant processes (top
> output - sorted by
> > >>
> > >>memory
> > >>
> > >>>usage) while a dummy load is applied.
> > >>>The load is generated by multiple web clients with a URL
> similar to the
> > >>>following
> > >>>http://host.domain.name/index.html?HomeRefreshInterval=2 (Refresh the
> > home
> > >>
> > >>page
> > >>
> > >>>every 2 seconds - too speed things up a bit)
> > >>>
> > >>>As you'll see the size of the processes grow and eventually
> all memory is
> > >>
> > >>used.
> > >>
> > >>>The only thing that I have found to help is to set
> MaxRequestsPerChild=1
> > >>
> > >>in
> > >>
> > >>>apache config,
> > >>>but performance is really bad as after each request is handled that
> > apache
> > >>
> > >>child
> > >>
> > >>>is killed and another
> > >>>is restarted in it's place. I also have to limit MinSpareServers and
> > >>>MaxSpareServers to about 4 with
> > >>>MaxClients also set to 4.
> > >>>
> > >>>I have searched through the mailing list archives but I
> don't see anybody
> > >>
> > >>else
> > >>
> > >>>with
> > >>>the same problem (some are similar but I don't seem to find
> a solution)
> > >>>
> > >>>I would really appreciate any help you could give me.
> > >>>
> >
> > This email was scanned by ICL's anti-virus solution at
> > http://www.eject.co.za
> >
> >
>
>
> This email was scanned by ICL's anti-virus solution at
http://www.eject.co.za
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