dd does not work anymore.
dd if=/dev/sda of=/dev/sdb bs=1024k
stops with "File size limit exceeded"
Using kernel 2.4.3 the same command works fine.
2.4.3 uses a large amount of buffer, 2.4.11p4 only chache.
2.4.3 doesn't swap, 2.4.11p4 eats up 1 GB RAM and 100 MB swap.
--
Best regards
Klaus Dittrich
e-mail: [email protected]
On Sun, 7 Oct 2001, Klaus Dittrich wrote:
> 2.4.3 uses a large amount of buffer, 2.4.11p4 only chache.
Block devices are handled by the page cache in 2.4.10 and up.
> 2.4.3 doesn't swap, 2.4.11p4 eats up 1 GB RAM and 100 MB swap.
This is a bug in pre4. Please try pre5 instead!
/Tobias
On Sun, 7 Oct 2001 20:35:40 +0200 [email protected] (Klaus Dittrich) wrote:
> dd does not work anymore.
>
> dd if=/dev/sda of=/dev/sdb bs=1024k
>
> stops with "File size limit exceeded"
>
> Using kernel 2.4.3 the same command works fine.
>
> 2.4.3 uses a large amount of buffer, 2.4.11p4 only chache.
> 2.4.3 doesn't swap, 2.4.11p4 eats up 1 GB RAM and 100 MB swap.
Please try 2.4.11-pre5.
pre4 is seriously broken regarding high vm loads.
Regards,
Stephan
Hi!
> > 2.4.3 uses a large amount of buffer, 2.4.11p4 only chache.
>
> Block devices are handled by the page cache in 2.4.10 and up.
>
Eh, did I miss something? Thought, that meta data are still
cached in buffer cache? Did it change from 2.4.9 to 2.4.10?
What about the ac kernels?
Constantin
On Tue, Oct 09, 2001 at 09:03:12AM +0200, Constantin Loizides wrote:
> Hi!
>
> > > 2.4.3 uses a large amount of buffer, 2.4.11p4 only chache.
> >
> > Block devices are handled by the page cache in 2.4.10 and up.
> >
>
> Eh, did I miss something?
Yes.
>Thought, that meta data are still
> cached in buffer cache?
FSes still use the buffer cache, but the block devices now use page cache.
>Did it change from 2.4.9 to 2.4.10?
Yes, in 2.4.10pre11
> What about the ac kernels?
>
Block devices use Buffer Cache. Alan has stated that he doesn't plan to
merge this change any time soon, if at all.
> Constantin
Mike