Re: [uml-devel] Re: 2.6.9-bb3 creates zombie threads in SKAS

["roland" <for_spam@gmx.de>]

Hi Christopher,

> > Btw, question: what about your I/O token limiter? Actively using it? Could
> > start being worked on for merge (there is at least one bug-report on it by
> > "roland" on a strange but valid test-case).
see http://sourceforge.net/mailarchive/message.php?msg_id=8560363

that`s probably just a minor one.

roland


----- Original Message ----- 
From: "Christopher S. Aker" <caker@theshore.net>
To: "Blaisorblade" <blaisorblade_spam@yahoo.it>
Cc: <user-mode-linux-devel@lists.sourceforge.net>; "Bodo Stroesser" <bstroesser@fujitsu-siemens.com>
Sent: Tuesday, November 23, 2004 12:33 AM
Subject: [uml-devel] Re: 2.6.9-bb3 creates zombie threads in SKAS


> > On Monday 22 November 2004 23:23, Christopher S. Aker wrote:
> > > Hello,
> > Btw, question: what about your I/O token limiter? Actively using it? Could
> > start being worked on for merge (there is at least one bug-report on it by
> > "roland" on a strange but valid test-case).
> 
> Yes, I use it in all my kernels -- it's invaluable.to me for stopping swap-thrashing
> UMLs from taking down the entire host.  What bug did Roland find?   If you want to
> merge it, you probably want to add some way to turn it off completely (perhaps by
> default).  I'm sure there are other improvements to be made...
> 
> > > I thought I'd give 2.6.9-bb3 a shot, and I had a bunch of users report the
> > > accumulation of zombies.
> > What the hell! This should *not* happen. What did we (I mean developers) do?
> > > This is on a 2.6.7 host, using your
> > > host-skas3-2.6.7-v1 patch.
> > ??? There is a ton of bugs in that patch (see the changelogs on my site).
> > Actually, it's likely you're not going to be hurt by them if you're using
> > NPTL on the host (it is *hard* to get them in that case), but you'd better
> > upgrade.
> 
> No doubt... I've been getting ready for The Great Reboot (38 hosts), but it takes
> careful planning with that many hosts.  I've been testing a SKAS-V7 based host kernel
> and things look very good.  All the weird bugs have gone away (mysql instability,
> Gentoo not able to complete emerges, this is all on either V1 or V6 skas patches).
> Looking forward to the upgrade to V7, and the latest CFQ changes.
> 
> > I have been releasing tons of updates, and even too quickly (most times I was
> > not introducing new bugs, just fixing the ones I and Bodo Stroesser was
> > finding) but -V1 is "a bit" old. That said, this should not happen.
> 
> Changes have been coming so quickly, it's hard to keep up :)
> 
> > > I'm not sure if it happened on newer host
> > > kernels, since I had to revert it back quickly.
> >
> > Back to what? To 2.6.9-bb2 or to 2.6.9?
> 
> Vanilla 2.6.9-um
> 
> > I'll check in these days what's going on... it was hyper-tested on 2.6.9 host
> > (not by me, but I trust Bodo Stroesser normally), but not on other hosts, I
> > guess.
> 
> Thanks,
> -Chris
> 
> 
> 
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real users.
> Discover which products truly live up to the hype. Start reading now. 
> http://productguide.itmanagersjournal.com/
> _______________________________________________
> User-mode-linux-devel mailing list
> User-mode-linux-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
> 


-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now. 
http://productguide.itmanagersjournal.com/
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel