Re: SHMMAX, cdrecord, kernel
Paul Slootman <paul@wau.mis.ah.nl> writes:
> On Fri 02 Jul 1999, Xavier Montagutelli wrote:
> >
> > I can't use cdrecord on my alpha box, because the default value for SHMMAX
> > in the kernel sources is 0x3fa000, but cdrecord needs at least 4MB
> > (0x4000000).
>
> No, it doesn't need that. That's only the default. I use cdrecord with
> default kernel parameters by supplying the fs=4000k parameter.
>
> > /proc/sys/kernel/shmmax. But is there a reason for setting this to the
> > value of 0x3fa000, or can I change it without any risk ? Where is this
> > value coming from ? (The default value on i386 is 32 MB).
>
> Whenever this topic came up, no one has ever been able to say with any
> certainty why the current value was chosen, and whether the default
> could be changed... Maybe we (debian) should simply increase it, and see
> what breaks (if anything)?
A *lot* better would be to make cdrecord check the maximum value and
use that when < 4mb.
Falk
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