[Gluster-users] is glusterfs DHT really distributed?

[Vijay Bellur]

Mark Mielke wrote:
> I'm a little surprised TCP_NODELAY isn't set by default? I set it on 
> all servers I write as a matter of principle.
>
> Serious servers intended to perform well should be able to easily beat 
> the Nagle algorithm. writev(), sendmsg(), or even write(buffer) where 
> the buffer is built first, should all beat the Nagle algorithm in 
> terms of increased throughput and reduced latency. On Linux, there is 
> also TCP_CORK. Unless GlusterFS does small writes, I suggest 
> TCP_NODELAY be set by default in future releases.
>
> Just an opinion. :-)

Thanks for this feedback, Mark. Pre-2.0.3, there was no option to turn 
off Nagle's algorithm. We introduced this in 2.0.3 and are debating 
whether this needs to be made the default, since it involves altering a 
default behavior :-). We will certainly consider making this the default 
behavior in our upcoming releases.

Thanks,
Vijay