[distcc] compression question

Martin Pool mbp at sourcefrog.net
Tue Feb 15 19:53:15 GMT 2005


On 15 Feb 2005, Brian Hall <brihall at pcisys.net> wrote:
> I am using two AMD64 Gentoo based PCs, a server with dual 1.8G Opterons 
> and a client/workstation with a 2.0G S754 A64. The server has GBe, and 
> so does the client, but I've recently discovered that the r8169 driver 
> gives me NFS timeouts on high traffic (large NFS transfers), so I've 
> dropped back to using a Intel PCI 100MB card (e100).
> 
> My question is, given the above relatively fast hardware, is it worth it 
> to enable lzo compression? I believe the A64 chips will compress very 
> quickly. I am just looking to minimize the compilation slowdown caused 
> by going from a GB connection for distcc to 100MB.
> 
> My current config, with MAKEOPTS=-j6 in /etc/make.conf:
> 
> # distcc-config --get-hosts
> zippy/4 localhost/2
> 
> Proposed config, if it is likely to be faster:
> zippy/4,lzo localhost/2

It's probably pretty close; using compression might be faster.  Could
you please time a kernel build with each setup and let us know?

--
Martin


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