Messages in this thread | | | Subject | Re: choice of raid5 checksumming algorithm wrong ? | From | Soeren Sonnenburg <> | Date | 11 Jan 2003 20:52:00 +0100 |
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On Sat, 2003-01-11 at 20:39, Rene Rebe wrote: > Hi. > > I also consider the kprint message a useability bug - and this is why > I posted a patch that prints out that the algorithm is choosen to > write "arround" the L2 cache ... - We patch this in our ROCK Linux > standard patches ...
I would vote for such a cosmetic patch to be included...
Soeren.
> On: Sat, 11 Jan 2003 16:45:04 +0100, > Lionel Bouton <Lionel.Bouton@inet6.fr> wrote: > > Soeren Sonnenburg wrote: > > > > >Hi! > > > > > >I really do wonder whether the displayed message is wrong or why it > > >always chooses the slowest checksumming function (happens with 2.4.19 - > > >21pre3) > > > > > > > > SSE is always preferred because unlike other checksumming code it > > doesn't use the processor caches when reading/writing data/checksum. > > This is slower (if several GB/s can be considered slow) for the > > checksumming but far better for the overall system performance. > > > > LB. > > - René > > -- > René Rebe - Europe/Germany/Berlin > e-mail: rene.rebe@gmx.net, rene@rocklinux.org > web: www.rocklinux.org, drocklinux.dyndns.org/rene/ > > Anyone sending unwanted advertising e-mail to this address will be > charged $25 for network traffic and computing time. By extracting my > address from this message or its header, you agree to these terms.
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