Displaying 2 results from an estimated 2 matches for "tcpdelackticks".
2007 Dec 03
3
Speed vs Windows systems issue
Hello,
I've a CentOS-5 system (kernel-2.6.18-8.1.14el5) SMP arch running
samba-3.0.27a. A user reported extremely long load time (11 minutes) of
a 43MB file across a 3Mb/sec WAN link. Copying the same file to a
windows server and opening it from there on the same client system took
about 2:30.
Research found the below thread from April:
2007 Apr 14
2
Samba -> WinXP: slow transfers, partial solution
...to search for problems with ACK delays in WinXP and found
the following articles:
http://support.microsoft.com/kb/328890
http://support.microsoft.com/kb/321098
Based on them, I've done the following changes in WinXP registry:
- set TcpAckFrequency to 1 to switch off delayed ACKs
- set TcpDelAckTicks to 0 to disable delayed ACKs timer
These changes did not help on their own. But combining them with the
change of SO_SNDBUF to 1500 suddenly improved the speeds up to about 6
Mb/s!
It appeared that with these registry changes, setting SO_SNDBUF to any
value in the range 1404 - 1872 gives th...