Hi all,
fixed in assp 2.6.6 *SPAM-Evaporator* build 21202:
added:
# SSL/TLS assp will try to do a fast bulk (boost) write using the
following values
# the max framesize of SSL is 16384 byte - for the time given in
SSL_write_boost_max_time, assp will try to send as much SSL frames as
possible
# be carefull changing any of these values !
our $SSL_write_boost = 0; # (0/1/2) 0 - disabled - possibly auto
enabled (default)
# 1 - enabled - possibly auto
disabled
# 2 - permanently enabled
(never automatically changed)
# try the SSL boost - automatically
set to 1 in ConfigChangeTCPBuf if $maxTCPSNDbufSSL > 16384
# automatically
set to 0 in ConfigChangeTCPBuf if $maxTCPSNDbufSSL <= 16384
our $SSL_write_boost_max_time = 100;# time in milliseconds used for SSL
write boost (default 100)
changed:
'TCPBufferSize','TCP and SSL Read/Write Buffer Size'
Define the buffer size in byte used for TCP- and SSL socket read and
write operations - defaults to empty.
Any or all of the following four values can be defined:
tcprcv - TCP receive buffer size
tcpsnd - TCP send buffer size
sslrcv - SSL receive buffer size
sslsnd - SSL send buffer size
SSL-Write-Boost (currently: 1)
Multiple value definition have to be separated by comma or pipe, like:
tcprcv = 65536, tcpsnd = 65536, ...
Possible size values are 8192 (8KB) to 99999999 (~95MB), special value
for sslrcv and sslsnd is zero.
Do NOT write dots in to the number values - like tcprcv = 1.048.576 ,
those values are not accepted!
If a value is not specified for tcprcv, the TCP receive buffer size
reported by the system is used - but at least 8192 byte.
If a value is not specified for tcpsnd, the value is set to 99999999.
If a value is not specified for sslrcv or sslsnd, a value of 16384 byte
is used, which is the maximum size of a single SSL frame of the SSL layer.
If a value of zero is specified for sslrcv or sslsnd, the according TCP
socket buffer size is used.
If the configured or calculated value for sslsnd is larger than 16384,
the buffer for sslsnd is set to the (SSL)-maximum of 16384 byte and
SSL-Write-Boost will be enabled.
If SSL-Write-Boost is enabled assp sends for a maximum of 100
milliseconds in each SSL/TLS-connection as much data as possible in a
single thread loop.
Under normal conditions any setting here is not required - or better, is
at least safe for all operating systems.
But, if you notice a too low transmission speed (eg. for large mails) of
plan TCP-sockets or SSL-sockets, it may help to set (increase) the
according buffer values.
like: tcprcv = 1048576, tcpsnd = 10485760, sslrcv = 0, sslsnd = 0
To monitor your settings, set SessionLog to diagnostic and watch the
maillog.
Notice: setting any receive buffers too high may cause the operating
system to fall back to very low values (eg. 8KB), which will slow down the
transmission speed dramatically.
On most systems the TCP send buffers size can safely be set to the
maximum supported value of 99999999 (tcprcv default).
Thomas
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