Re: load balancig

InfraRED/Veres Tibor wrote:
>
> On 08-Feb-99 Jonathan Larmour wrote:
> > InfraRED/Veres Tibor wrote:
>
> >> If no fetch the page from one of the proxies in wheightened
> >> round-robin
> >> where the weight is dynamically changed to sum (average transfer speed
> >> of
> >> the last 10 requests sent to this proxy, not counting pages already
> >> cached
> >> by parent)
> >
> > Certainly if an ICP capable parent says it has something, then it will
> > be
> > fetched from there. For the second part, I believe that squid by default
> > already fetches MISSes from the parent with the lowest average RTT which
> > correlates with the transfer speed (although it is probably averaged
> > over
> > more than the last 10 requests).
>
> not exactly.. the RTT depends mostly on the bandwidth between me
> and the parent proxy... which is several magnitudes faster than the
> bandwidth between the parent proxy and the site I want to fetch the page
> from..
> I want this dynamic weighting because the avg bandwidth of these parent
> proxies fluctuate

Ah, sorry. In that case the closest you can get is with the ICMP options.
You want to enable "query_icmp" in all your non-parents, and configure squid
with --enable-icmp and install the "pinger" program as root in all the
parents you can. It will not work for any parents that have not been
compiled with --enable-icmp though :-(.

Jifl

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