Re: [uml-user] ubd=mmap status and /dev/anon status

2005-02-09 Thread Nuutti Kotivuori
Paolo Giarrusso wrote: > --- Jeff Dike <[EMAIL PROTECTED]> ha scritto: >> [EMAIL PROTECTED] said: > >>> In the other problem case, the dstat on the host shows only write >>> load of good magnitude, around 16 MB/s. But it is writing a whole >>> lot more than what happens on the guest side. In fact,

Re: [uml-user] ubd=mmap status and /dev/anon status

2005-02-09 Thread Paolo Giarrusso
--- Jeff Dike <[EMAIL PROTECTED]> ha scritto: > [EMAIL PROTECTED] said: > > In the other problem case, the dstat on the host > shows only write load > > of good magnitude, around 16 MB/s. But it is > writing a whole lot more > > than what happens on the guest side. In fact, in > one case, 15 tim

Re: [uml-user] tempfs (was: no. of UMLs)

2005-02-09 Thread Anthony Brock
Paul Warren <[EMAIL PROTECTED]> 02/09/05 10:31AM >>> > A delay. My original question was, does using tempfs do more than > prevent the memory from getting swapped out? We have developed a patch > that mlock()s the memory (using a setuid helper app), and thus should > stop it from getting swa

Re: [uml-user] tempfs (was: no. of UMLs)

2005-02-09 Thread Paul Warren
On Wed, Feb 09, 2005 at 09:08:08AM -0800, Anthony Brock wrote: > >>> Paul Warren <[EMAIL PROTECTED]> 02/09/05 07:12AM >>> > > Right, but the memory is mmapped to that file. My understanding is > that > > the memory will only be synced with the disk when either (a) msync > (or > > munmap) gets call

Re: [uml-user] tempfs (was: no. of UMLs)

2005-02-09 Thread Anthony Brock
>>> Paul Warren <[EMAIL PROTECTED]> 02/09/05 07:12AM >>> > Right, but the memory is mmapped to that file. My understanding is that > the memory will only be synced with the disk when either (a) msync (or > munmap) gets called or (b) the kernel has nothing better to do. > I'm assuming that (a) doe

Re: [uml-user] tempfs (was: no. of UMLs)

2005-02-09 Thread Paul Warren
On Wed, Feb 09, 2005 at 03:20:11PM +0100, Hegedus Gabor wrote: > 2005-02-09, sze keltezéssel 14:13-kor Paul Warren ezt írta: > > On Wed, Feb 09, 2005 at 02:59:50PM +0100, Andreas Wohlfeld wrote: > > > Patch your host with skas and see that the temp files go to a tempfs > > > mount point (or mount /

Re: [uml-user] no. of UMLs

2005-02-09 Thread Hegedus Gabor
2005-02-09, sze keltezéssel 14:13-kor Paul Warren ezt írta: > On Wed, Feb 09, 2005 at 02:59:50PM +0100, Andreas Wohlfeld wrote: > > Patch your host with skas and see that the temp files go to a tempfs > > mount point (or mount /tmp with tempfs). This will make things a lot > > faster. > > Can some

Re: [uml-user] no. of UMLs

2005-02-09 Thread Paul Warren
On Wed, Feb 09, 2005 at 02:59:50PM +0100, Andreas Wohlfeld wrote: > Patch your host with skas and see that the temp files go to a tempfs > mount point (or mount /tmp with tempfs). This will make things a lot > faster. Can someone tell me what the tempfs trick achieves? My understanding was that i

Re: [uml-user] no. of UMLs

2005-02-09 Thread Paul Warren
Adil, I have replied only to the -user list, as this is the appropriate forum for such questions. > is there any limit on the number of UMLs can be run at a time on a single > machine. > > My machine configuration is: > RAM 512 MB > hard disk 80 GB > Pentium 4 > > but when i run more than 4 U

Re: [uml-user] no. of UMLs

2005-02-09 Thread Andreas Wohlfeld
On Wed, Feb 09, 2005 at 04:44:17PM +0530, Adil Mujeeb, Noida wrote: > hi, > is there any limit on the number of UMLs can be run at a time on a single > machine. > > Iam using the following command to run the UML: > ./linux > ubd0=/home/adilm/test1.diff,/home/adilm/uml/linux-2.4.26/root_fs.rh72.

[uml-user] no. of UMLs

2005-02-09 Thread Adil Mujeeb, Noida
hi, is there any limit on the number of UMLs can be run at a time on a single machine.   My machine configuration is: RAM 512 MB hard disk 80 GB Pentium 4   but when i run more than 4 UMLs its become slow.   Iam using the following command to run the UML:  ./linux ubd0=/home/adilm/test1.