casper....@sun.com wrote:
>
>
> >> If a memory that can pass diagnostics for 24 hours at a
> >> stretch can cause glitches in huge datastreams, then IMO it
> >> behooves ZFS to defend itself against them. Buffering disk
> >> i/o on machines with no ECC seems like reasonably cheap
> >> insurance against a whole class of errors, and could make
> >> ZFS usable on PCs that, although they work fine with ext3,
> >
> >How can a machine with bad memory "work fine with ext3"?
>
> "It appears to work".
...
> When I finally run memtest86 (did require a BIOS which supported a USB
> keyboard properly), I had one broken 512MB dimm and I replaced it.
Another important fact is that Linux starts using physical memory from
low addresses while Solaris takes care about the CPU cache and in addition
allocates memory for DMA from the top physical pages.
A PC with bad memory in the top parts may appear OK with other OS but this
is a fallacious impression.
Jörg
--
EMail:jo...@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
j...@cs.tu-berlin.de (uni)
joerg.schill...@fokus.fraunhofer.de (work) Blog:
http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily
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