[quagga-dev 1755] Re: daemon writes to vtysh need to be buffered or forked

On Mon, Nov 01, 2004 at 11:25:29AM +0200, Hasso Tepper wrote:
> I'm going to look at it in the evening, but for now I must say - really good 
> work. I'm impressed. Preliminary performance test with bgpd with full feed:
> 
> Before applying patch
> *********************
> time vtysh -c "sho ip bgp" > /dev/null
>    25.91s real     1.46s user    21.47s system
> 
> After applying patch
> ********************
> time vtysh -c "sho ip bgp" > /dev/null
>     5.27s real     0.13s user     0.37s system

Of course, the real question is whether the output is the same. 
But I'm not surprised by the speedup, the old code used to make a
write system call for every line of output, that was very
inefficient.

-Andy