Re: [lc-devel] UML swap bug fixed

[David C. <dav...@sh...>]

=A6b =B6g=A4=BB, 2002-01-12 23:20, Rodrigo Souza de Castro =BCg=B9D=A1G
> On Sat, Jan 12, 2002 at 05:50:54PM +0800, David Chow wrote:
> > Is this the bug that I point out in my previous mail to the list? Or it=
=20
> > is caused by a different issue? Please clarify, since I don't have=20
> > enough time to understand all the code at the moment. Thanks.
>=20
> I forwarded an email to this list on Dec 12th concerning a bug in
> User-Mode-Linux that made compressed cache not work. To be clear, with
> compressed cache code this bug was triggered easier. And now it's
> finally fixed and we can continue using UML for development.
>=20
> Regarding the bug your pointed out, I'd like you to test 0.21pre5
> version I released this week. The swapout path code was rewritten and
> it's much simpler and efficient now. I tested the last code to trigger
> this bug and couldn't make it hang. Neither could Livio. He tested
> under UML yesterday and got disappointed that he couldn't make the
> code crash. :-) In case you still have problems with the this newer
> version, please let me know.

I have downloaded the latest 0.21pre6 .=20

It still have problem nears out of memory when I have not turned on
swap. Do you think this is something not related with compressed cache
or a vm bug from Linux?

Usually when really out of memory, the oom killer should be triggered
and will kill that process... my experiecne is the machine freezes.

I will do more testing with swap devices.
>=20
> > Rodrigo Souza de Castro wrote:
> >=20
> > >Hi there,
> > >
> > >Finally Jeff seems to have fixed that bug which screwed up our vswap
> > >addresses. I think I can continue developing under UML :-)
>=20
> Best regards,
> --=20
> Rodrigo S. de Castro <rc...@im...>

David