I know the maximum length of a datagram queue length can be found using "cat /proc/sys/net/unix/max_dgram_qlen".
I wanted to know how to find the default value that is set on boot up (like in case of the /proc/sys/net/core/wmem_default for the send buffer size).
Is it possible to increase the value of max_dgram_qlen? What is the upper limit of the same?
My kernel version is 2.6.27.7. I'm new to Unix Domain Socket programming (AF_UNIX).
Thanks in advance for any comments / solutions!
The previous answers/comments failed to understand that the OP was talking about maximum queue length in datagrams (max_dram_qlen) and not in bytes. The OS provides settings for both sizes.
You can set max_dgram_qlen
using the following command:
sysctl net.unix.max_dgram_qlen=128
You may need to run with sudo
and you may also need to put double quotes around max_dgram_qlen=128
depending on your shell.
Also, see What's the practical limit on the size of single packet transmitted over domain socket?.