Hiawatha version:   v9.6,  SSL (1.3.7), URL toolkit, XSLT
Operating System:  CentOS 6.5 / 64 Bit
when using hiawatha very slow open document 
very fast when using apache, whta the problem, 
here my config :
ServerId = apache
ServerString =  WebServer
ConnectionsTotal = 2048
ConnectionsPerIP = 50
SocketSendTimeout = 60
LogFormat = extended
ExecuteCGI = yes
CacheSize = 50
SystemLogfile = /var/log/hiawatha/system.log
GarbageLogfile = /var/log/hiawatha/garbage.log
Binding {
    Port = 80
}
ConnectionsTotal = 200
ConnectionsPerIP = 1000
CGIhandler = /usr/bin/php-cgi:php,php5,do
CGIextension = cgi
FastCGIserver {
    FastCGIid = dv
    ConnectTo = 127.0.0.1:9000
    Extension = php, php5, do
    SessionTimeout = 30
}
Hostname = 127.0.0.1
WebsiteRoot = /opt/html
StartFile = index.html
UrlToolkit {
    ToolkitID = codeigniter
    RequestURI exists Exit
    Match .* Rewrite /index.php
}
VirtualHost {
    Hostname = test.example.com
    WebsiteRoot = /var/www/html
    StartFile = index.php
    UseToolkit = codeigniter
    TimeForCGI = 60
    UseFastCGI = dv
    TriggerOnCGIstatus = no
    ExecuteCGI = yes
    PreventCSRF = yes
    PreventSQLi = yes
    PreventXSS = yes
    AccessLogfile = /var/log/hiawatha/vdmi.access.log
    ErrorLogfile = /var/log/hiawatha/vdmi.error.log
    ErrorHandler = 404:/error.cgi
}