Re: [gentoo-performance] TCP perfomance

2008-06-10 Thread Ramon van Alteren
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Kevin Faulkner wrote: > I haven't played around with different congestion algorithms all that > much, I generally have stuck with Westwood. MTU size... with all the > different machines we have, I prefer to stay with the default. Window > size is a

Re: [gentoo-performance] TCP perfomance

2008-06-09 Thread Kevin Faulkner
Miguel Sousa Filipe wrote: On Fri, Jun 6, 2008 at 6:26 PM, Kevin Faulkner <[EMAIL PROTECTED]> wrote: Miguel Sousa Filipe wrote: There is no such thing has a TCP timestamp: http://freebie.fatpipe.org/~mjb/Drawings/TCP_Header.png so, that doesn't make any sense... Your right and I'm wrong. Its

Re: [gentoo-performance] TCP perfomance

2008-06-07 Thread Miguel Sousa Filipe
On Fri, Jun 6, 2008 at 6:26 PM, Kevin Faulkner <[EMAIL PROTECTED]> wrote: > Miguel Sousa Filipe wrote: >> >> There is no such thing has a TCP timestamp: >> http://freebie.fatpipe.org/~mjb/Drawings/TCP_Header.png >> >> so, that doesn't make any sense... > > Your right and I'm wrong. > Its not in the

Re: [gentoo-performance] TCP perfomance

2008-06-07 Thread Ritesh Kumar
There are quite a few things that make TCP performance degrade. Is there a specific reason why you thought about TCP timestamps? A good way to know is to launch a TCP connection and get it to a stage where you can clearly see its performance suffer. Then first take a look at the CPU usage... if its

Re: [gentoo-performance] TCP perfomance

2008-06-06 Thread Kevin Faulkner
Miguel Sousa Filipe wrote: There is no such thing has a TCP timestamp: http://freebie.fatpipe.org/~mjb/Drawings/TCP_Header.png so, that doesn't make any sense... Your right and I'm wrong. Its not in the header, its thrown on at the end try doing cat /proc/sys/net/ipv4/tcp_timestamps http:/

Re: [gentoo-performance] TCP perfomance

2008-06-06 Thread Miguel Sousa Filipe
There is no such thing has a TCP timestamp: http://freebie.fatpipe.org/~mjb/Drawings/TCP_Header.png so, that doesn't make any sense... On Fri, Jun 6, 2008 at 5:41 PM, Kevin Faulkner <[EMAIL PROTECTED]> wrote: > Yes, I also forgot that I had been subscribed to this list. > To get a topic going I w

[gentoo-performance] TCP perfomance

2008-06-06 Thread Kevin Faulkner
Yes, I also forgot that I had been subscribed to this list. To get a topic going I was at work and I argued that we should disable TCP timestamps. I was discussing in a meeting that this would cut back (perhaps very slightly) on the amount of work that the system has to do before sending a pack