Re: [squid-users] Large Buffers for Squid

Is this approach, valid when you use coss as storage ?
What would be the recomendation if it's not ?

Regards, Pablo

On 6/12/07, Michael Puckett <Michael.Puckett@sun.com> wrote:
> Dave,
> Yes, absolutely setting a small max_size in memory is the right
> approach. This then lets the kernel consume the available main memory
> for i/o buffers which then suffices quite well for the in-memory cache
> which gets managed by the OS. We have used this technique for years and
> get great performance from it. We would like to now experiment with
> tuning the i/o buffer sizes to minimize the read/write system calls. As
> a point of clarification we are running a Sun X64 Solaris 10 box, not Linux.
>
> We are running 3 Gbit NICs right now at about 80% of peak when the
> object is in memory from a single squid.
>
> -mikep
>
> Dave Dykstra wrote:
> > In my performance optimizations of squid I didn't see any benefit to
> > increasing Linux kernel network buffers. Those are mostly useful for
> > high-latency (long distance) connections, and I was concentrating on
> > high speed LAN accesses. I did see a huge increase in performance by
> > making sure that squid's maximum_object_size_in_memory was small; I set
> > it at 128KB. The Linux filesystem cache, which as far as I know can
> > take advantage of all available memory automatically, is much faster
> > than squid's memory cache for large and even moderately sized objects.
> > How much throughput are you able to get through the 4 Gbits of network
> > connections with a single squid?
> >
> > - Dave Dykstra
> >
> > On Mon, Jun 11, 2007 at 06:13:32PM -0700, Michael Puckett wrote:
> >
> >> My squid application is doing large file transfers only. We have
> >> (relatively)few clients doing (relatively)few transfers of very large
> >> files. The server is configured to have 16 or 32GB of memory and is
> >> serving 3 Gbit NICs to the clients downstream and 1 Gbit NIC upstream.
> >> We wish to optimize the performance around these large file transfers
> >> and desire to run large I/O buffers to the networks and the disk. Is
> >> there a tunable buffer size parameter that I can set to increase the
> >> network and disk buffer sizes?
> >>
> >> Regards
> >>
> >> -mikep
> >>
>
>
Received on Wed Jun 13 2007 - 05:50:14 MDT