top显示负载太大。怎么回事啊~
bestjovi
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1#
bestjovi 发表于 2007-09-03 15:19
top显示负载太大。怎么回事啊~
top显示的average都30朝上了。晕。
服务器环境是centos,用yum 安装的httpd httpd.conf内容如下: [codetop显示的average都30朝上了。晕。 服务器环境是centos,用yum 安装的httpd httpd.conf内容如下:
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CODE:
#
# This is the main Apache server configuration file. It contains the # configuration directives that give the server its instructions. # See <URL:[url]http://httpd.apache.org/docs/2.2/[/url]> for detailed information. # In particular, see # <URL:[url]http://httpd.apache.org/docs/2.2/mod/directives.html[/url]> # for a discussion of each configuration directive. # # # Do NOT simply read the instructions in here without understanding # what they do. They're here only as hints or reminders. If you are unsure # consult the online docs. You have been warned. # # The configuration directives are grouped into three basic sections: # 1. Directives that control the operation of the Apache server process as a # whole (the 'global environment'). # 2. Directives that define the parameters of the 'main' or 'default' server, # which responds to requests that aren't handled by a virtual host. # These directives also provide default values for the settings # of all virtual hosts. # 3. Settings for virtual hosts, which allow Web requests to be sent to # different IP addresses or hostnames and have them handled by the # same Apache server process. # # Configuration and logfile names: If the filenames you specify for many # of the server's control files begin with "/" (or "drive:/" for Win32), the # server will use that explicit path. If the filenames do *not* begin # with "/", the value of ServerRoot is prepended -- so "logs/foo.log" # with ServerRoot set to "/etc/httpd" will be interpreted by the # server as "/etc/httpd/logs/foo.log". # ### Section 1: Global Environment # # The directives in this section affect the overall operation of Apache, # such as the number of concurrent requests it can handle or where it # can find its configuration files. # # # Don't give away too much information about all the subcomponents # we are running. Comment out this line if you don't mind remote sites # finding out what major optional modules you are running #ServerTokens OS ServerTokens Full # # ServerRoot: The top of the directory tree under which the server's # configuration, error, and log files are kept. # # NOTE! If you intend to place this on an NFS (or otherwise network) # mounted filesystem then please read the LockFile documentation # (available at <URL:[url]http://httpd.apache.org/docs/2.2/mod/mpm_common.html#lockfile[/url]>); # you will save yourself a lot of trouble. # # Do NOT add a slash at the end of the directory path. # ServerRoot "/etc/httpd" # # PidFile: The file in which the server should record its process # identification number when it starts. # PidFile run/httpd.pid # # Timeout: The number of seconds before receives and sends time out. # Timeout 15 # # KeepAlive: Whether or not to allow persistent connections (more than # one request per connection). Set to "Off" to deactivate. # KeepAlive Off # # MaxKeepAliveRequests: The maximum number of requests to allow # during a persistent connection. Set to 0 to allow an unlimited amount. # We recommend you leave this number high, for maximum performance. # MaxKeepAliveRequests 100 # # KeepAliveTimeout: Number of seconds to wait for the next request from the # same client on the same connection. # #KeepAliveTimeout 15 KeepAliveTimeout 5 ## ## Server-Pool Size Regulation (MPM specific) ## # prefork MPM # StartServers: number of server processes to start # MinSpareServers: minimum number of server processes which are kept spare # MaxSpareServers: maximum number of server processes which are kept spare # ServerLimit: maximum value for MaxClients for the lifetime of the server # MaxClients: maximum number of server processes allowed to start # MaxRequestsPerChild: maximum number of requests a server process serves <IfModule prefork.c> #StartServers 8 #MinSpareServers 5 #MaxSpareServers 20 #ServerLimit 256 #MaxClients 256 #MaxRequestsPerChild 4000 # StartServers 8 # MinSpareServers 5 # MaxSpareServers 20 # ServerLimit 1024 # MaxClients 768 # MaxRequestsPerChild 0 </IfModule> # worker MPM # StartServers: initial number of server processes to start # MaxClients: maximum number of simultaneous client connections # MinSpareThreads: minimum number of worker threads which are kept spare # MaxSpareThreads: maximum number of worker threads which are kept spare # ThreadsPerChild: constant number of worker threads in each server process # MaxRequestsPerChild: maximum number of requests a server process serves <IfModule worker.c> #StartServers 2 #MaxClients 150 #MinSpareThreads 25 #MaxSpareThreads 75 #ThreadsPerChild 25 #MaxRequestsPerChild 0 # StartServers 5 # MinSpareServers 5 # MaxSpareServers 10 # ServerLimit 1024 # MaxClients 768 # MaxRequestsPerChild 0 </IfModule> # # Listen: Allows you to bind Apache to specific IP addresses and/or # ports, in addition to the default. See also the <VirtualHost> # directive. # # Change this to Listen on specific IP addresses as shown below to # prevent Apache from glomming onto all bound IP addresses (0.0.0.0) # #Listen 12.34.56.78:80 Listen 80 # # To be able to use the functionality of a module which was built as a DSO you # have to place corresponding `LoadModule' lines at this location so the # directives contained in it are actually available _before_ they are used. # Statically compiled modules (those listed by `httpd -l') do not need # to be loaded here. # # Example: # LoadModule foo_module modules/mod_foo.so # LoadModule deflate_module modules/mod_deflate.so LoadModule expires_module modules/mod_expires.so LoadModule rewrite_module modules/mod_rewrite.so LoadModule evasive20_module modules/mod_evasive20.so LoadModule autoindex_module modules/mod_autoindex.so LoadModule auth_basic_module modules/mod_auth_basic.so LoadModule auth_digest_module modules/mod_auth_digest.so LoadModule authn_file_module modules/mod_authn_file.so LoadModule authn_alias_module modules/mod_authn_alias.so LoadModule authn_anon_module modules/mod_authn_anon.so LoadModule authn_dbm_module modules/mod_authn_dbm.so LoadModule authn_default_module modules/mod_authn_default.so LoadModule authz_host_module modules/mod_authz_host.so LoadModule authz_user_module modules/mod_authz_user.so LoadModule authz_owner_module modules/mod_authz_owner.so LoadModule authz_groupfile_module modules/mod_authz_groupfile.so LoadModule authz_dbm_module modules/mod_authz_dbm.so LoadModule authz_default_module modules/mod_authz_default.so #LoadModule ldap_module modules/mod_ldap.so #LoadModule authnz_ldap_module modules/mod_authnz_ldap.so LoadModule include_module modules/mod_include.so LoadModule log_config_module modules/mod_log_config.so LoadModule logio_module modules/mod_logio.so LoadModule env_module modules/mod_env.so LoadModule ext_filter_module modules/mod_ext_filter.so LoadModule mime_magic_module modules/mod_mime_magic.so LoadModule headers_module modules/mod_headers.so LoadModule usertrack_module modules/mod_usertrack.so LoadModule setenvif_module modules/mod_setenvif.so LoadModule mime_module modules/mod_mime.so LoadModule dav_module modules/mod_dav.so LoadModule status_module modules/mod_status.so LoadModule info_module modules/mod_info.so LoadModule dav_fs_module modules/mod_dav_fs.so LoadModule vhost_alias_module modules/mod_vhost_alias.so LoadModule negotiation_module modules/mod_negotiation.so LoadModule dir_module modules/mod_dir.so LoadModule actions_module modules/mod_actions.so LoadModule speling_module modules/mod_speling.so #LoadModule userdir_module modules/mod_userdir.so LoadModule alias_module modules/mod_alias.so #LoadModule proxy_module modules/mod_proxy.so #LoadModule proxy_balancer_module modules/mod_proxy_balancer.so #LoadModule proxy_ftp_module modules/mod_proxy_ftp.so #LoadModule proxy_http_module modules/mod_proxy_http.so #LoadModule proxy_connect_module modules/mod_proxy_connect.so #LoadModule cache_module modules/mod_cache.so #LoadModule suexec_module modules/mod_suexec.so #LoadModule disk_cache_module modules/mod_disk_cache.so #LoadModule file_cache_module modules/mod_file_cache.so #LoadModule mem_cache_module modules/mod_mem_cache.so #LoadModule cgi_module modules/mod_cgi.so #LoadModule unique_id_module modules/mod_unique_id.so # # The following modules are not loaded by default: # #LoadModule cern_meta_module modules/mod_cern_meta.so #LoadModule asis_module modules/mod_asis.so # # Dynamic Shared Object (DSO) Support #LoadFile /usr/lib/libxml2.so #LoadModule security2_module modules/mod_security2.so # # Load config files from the config directory "/etc/httpd/conf.d". # Include conf.d/*.conf # # ExtendedStatus controls whether Apache will generate "full" status # information (ExtendedStatus On) or just basic information (ExtendedStatus # Off) when the "server-status" handler is called. The default is Off. # #ExtendedStatus On # # If you wish httpd to run as a different user or group, you must run # httpd as root initially and it will switch. # # User/Group: The name (or #number) of the user/group to run httpd as. # . On SCO (ODT 3) use "User nouser" and "Group nogroup". # . On HPUX you may not be able to use shared memory as nobody, and the # suggested workaround is to create a user www and use that user. # NOTE that some kernels refuse to setgid(Group) or semctl(IPC_SET) # when the value of (unsigned)Group is above 60000; # don't use Group #-1 on these systems! # User apache Group apache ### Section 2: 'Main' server configuration # # The directives in this section set up the values used by the 'main' # server, which responds to any requests that aren't handled by a # <VirtualHost> definition. These values also provide defaults for # any <VirtualHost> containers you may define later in the file. # # All of these directives may appear inside <VirtualHost> containers, # in which case these default settings will be overridden for the # virtual host being defined. # # # ServerAdmin: Your address, where problems with the server should be # e-mailed. This address appears on some server-generated pages, such # as error documents. e.g. [email]admin@your-domain.com[/email] # #ServerAdmin root@localhost ServerAdmin [email]Yobbo.Zhu@gmail.com[/email] # # ServerName gives the name and port that the server uses to identify itself. # This can often be determined automatically, but we recommend you specify # it explicitly to prevent problems during startup. # # If this is not set to valid DNS name for your host, server-generated # redirections will not work. See also the UseCanonicalName directive. # # If your host doesn't have a registered DNS name, enter its IP address here. # You will have to access it by its address anyway, and this will make # redirections work in a sensible way. # #ServerName [url]www.example.com:80[/url] ServerName bb.domain.cc:80 # # UseCanonicalName: Determines how Apache constructs self-referencing # URLs and the SERVER_NAME and SERVER_PORT variables. # When set "Off", Apache will use the Hostname and Port supplied # by the client. When set "On", Apache will use the value of the # ServerName directive. # UseCanonicalName Off # # DocumentRoot: The directory out of which you will serve your # documents. By default, all requests are taken from this directory, but # symbolic links and aliases may be used to point to other locations. # #DocumentRoot "/var/www/html" DocumentRoot "/data/www/wwwroot" # # Each directory to which Apache has access can be configured with respect # to which services and features are allowed and/or disabled in that # directory (and its subdirectories). # # First, we configure the "default" to be a very restrictive set of # features. # <Directory /> Options FollowSymLinks AllowOverride None </Directory> # # Note that from this point forward you must specifically allow # particular features to be enabled - so if something's not working as # you might expect, make sure that you have specifically enabled it # below. # # # This should be changed to whatever you set DocumentRoot to. # <Directory "/data/www/wwwroot"> # # Possible values for the Options directive are "None", "All", # or any combination of: # Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews # # Note that "MultiViews" must be named *explicitly* --- "Options All" # doesn't give it to you. # # The Options directive is both complicated and important. Please see # [url]http://httpd.apache.org/docs/2.2/mod/core.html#options[/url] # for more information. # #Options Indexes FollowSymLinks Options Includes ExecCGI FollowSymLinks # # AllowOverride controls what directives may be placed in .htaccess files. # It can be "All", "None", or any combination of the keywords: # Options FileInfo AuthConfig Limit # AllowOverride None # # Controls who can get stuff from this server. # Order allow,deny Allow from all </Directory> # # DirectoryIndex: sets the file that Apache will serve if a directory # is requested. # <IfModule dir_module> DirectoryIndex index.php index.html index.htm </IfModule> # # UserDir: The name of the directory that is appended onto a user's home # directory if a ~user request is received. # # The path to the end user account 'public_html' directory must be # accessible to the webserver userid. This usually means that ~userid # must have permissions of 711, ~userid/public_html must have permissions # of 755, and documents contained therein must be world-readable. # Otherwise, the client will only receive a "403 Forbidden" message. # # See also: [url]http://httpd.apache.org/docs/misc/FAQ.html#forbidden[/url] # <IfModule mod_userdir.c> # # UserDir is disabled by default since it can confirm the presence # of a username on the system (depending on home directory # permissions). # UserDir disable # # To enable requests to /~user/ to serve the user's public_html # directory, remove the "UserDir disable" line above, and uncomment # the following line instead: # #UserDir public_html </IfModule> # # Control access to UserDir directories. The following is an example # for a site where these directories are restricted to read-only. # #<Directory /home/*/public_html> # AllowOverride FileInfo AuthConfig Limit # Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec # <Limit GET POST OPTIONS> # Order allow,deny # Allow from all # </Limit> # <LimitExcept GET POST OPTIONS> # Order deny,allow # Deny from all # </LimitExcept> #</Directory> # # DirectoryIndex: sets the file that Apache will serve if a directory # is requested. # # The index.html.var file (a type-map) is used to deliver content- # negotiated documents. The MultiViews Option can be used for the # same purpose, but it is much slower. # DirectoryIndex index.html index.html.var # # AccessFileName: The name of the file to look for in each directory # for additional configuration directives. See also the AllowOverride # directive. # AccessFileName .htaccess # # The following lines prevent .htaccess and .htpasswd files from being # viewed by Web clients. # #<Files ~ "^\.ht"> # Order allow,deny # Deny from all #</Files> <FilesMatch "^\.ht"> Order allow,deny Deny from all Satisfy All </FilesMatch> # # TypesConfig describes where the mime.types file (or equivalent) is # to be found. # TypesConfig /etc/mime.types # # DefaultType is the default MIME type the server will use for a document # if it cannot otherwise determine one, such as from filename extensions. # If your server contains mostly text or HTML documents, "text/plain" is # a good value. If most of your content is binary, such as applications # or images, you may want to use "application/octet-stream" instead to # keep browsers from trying to display binary files as though they are # text. # DefaultType text/plain # # The mod_mime_magic module allows the server to use various hints from the # contents of the file itself to determine its type. The MIMEMagicFile # directive tells the module where the hint definitions are located. # <IfModule mod_mime_magic.c> # MIMEMagicFile /usr/share/magic.mime MIMEMagicFile conf/magic </IfModule> # # HostnameLookups: Log the names of clients or just their IP addresses # e.g., [url]www.apache.org[/url] (on) or 204.62.129.132 (off). # The default is off because it'd be overall better for the net if people # had to knowingly turn this feature on, since enabling it means that # each client request will result in AT LEAST one lookup request to the # nameserver. # HostnameLookups Off # # EnableMMAP: Control whether memory-mapping is used to deliver # files (assuming that the underlying OS supports it). # The default is on; turn this off if you serve from NFS-mounted # filesystems. On some systems, turning it off (regardless of # filesystem) can improve performance; for details, please see # [url]http://httpd.apache.org/docs/2.2/mod/core.html#enablemmap[/url] # #EnableMMAP off # # EnableSendfile: Control whether the sendfile kernel support is # used to deliver files (assuming that the OS supports it). # The default is on; turn this off if you serve from NFS-mounted # filesystems. Please see # [url]http://httpd.apache.org/docs/2.2/mod/core.html#enablesendfile[/url] # #EnableSendfile off # # ErrorLog: The location of the error log file. # If you do not specify an ErrorLog directive within a <VirtualHost> # container, error messages relating to that virtual host will be # logged here. If you *do* define an error logfile for a <VirtualHost> # container, that host's errors will be logged there and not here. # #ErrorLog logs/error_log ErrorLog /dev/null |