Re: [uml-user] blockdevice performance

2005-03-05 Thread Jeff Dike
[EMAIL PROTECTED] said: > Is this like it is implemented now? Yup. In both the AIO and non-AIO case, there is a separate thread to which you send IO requests, and at some later point, UML gets interrupted with the results. Jeff

[uml-user] Count them off

2005-03-05 Thread Jason Clark
Hey gang, The list has been fairly quiet lately, so I thought I would pose a question. Let's hear what you use UML for. What are you doing with it? I'm running on a Sempron 2200 with LVM and software RAID on my host system. I have 5 guests up and running. Apache web server listening on the i

Re: [uml-user] a question on file systems ubd= parameter

2005-03-05 Thread Scott Edwards
On Sat, 5 Mar 2005 16:09:28 -0800, Scott Granados <[EMAIL PROTECTED]> wrote: > > Hi, again I hope this is not to basic. > > I have a uml built, with out devfs enabled per the default. > > I'm interested in making other fie systems so according to the steps I built > an empty file > d

[uml-user] a question on file systems ubd= parameter

2005-03-05 Thread Scott Granados
    Hi, again I hope this is not to basic.   I have a uml built, with out devfs enabled per the default.   I'm interested in making other fie systems so according to the steps I built an empty file dd if=/dev/zero of=newfilesys seek=256 count=1 bs=1M which created the proper file then in th

Re: [uml-user] blockdevice performance

2005-03-05 Thread Sven Köhler
has anybody compared the performance of UML's built-in blockdevice, NetworkBlockDevices, ATAoverEthernet, yet? I don't know how UML's blockdevice works, but i know how NBD works. The kernel sends multiple requests to the NBD server, and receives the responses asap. The worse case for UML's block-de

Re: [uml-user] Re: [uml-devel] UML freezes at hdd-intensive processes

2005-03-05 Thread Blaisorblade
On Friday 04 March 2005 07:05, Oliver Baltz wrote: > Hi Rob, > > > Have you tried attaching it to the host console thingy, or running UML > > under > > gdb and breaking in to see what it's doing when it hangs? (Also, if you > > can > > get it to respond to the magic sysrq, you can get a thread dum

Re: [uml-user] blockdevice performance

2005-03-05 Thread Blaisorblade
On Friday 04 March 2005 04:01, Sven Köhler wrote: > Hi, > > has anybody compared the performance of UML's built-in blockdevice, > NetworkBlockDevices, ATAoverEthernet, yet? > > I don't know how UML's blockdevice works, but i know how NBD works. The > kernel sends multiple requests to the NBD server

Re: [uml-user] UML troubles: spawning thousands of processes

2005-03-05 Thread Blaisorblade
On Wednesday 02 March 2005 21:35, Jim Carter wrote: > On Wed, 2 Mar 2005, Maarten wrote: > Am I correct that hostfs is not intrinsically unsafe? But if your host > keys or other sensitive data are mode 644 so the UML special user can read > them, the hacker can steal them, just as could any other

Re: [uml-user] UML troubles: spawning thousands of processes

2005-03-05 Thread Blaisorblade
On Thursday 03 March 2005 02:17, nils toedtmann wrote: > On Wed, Mar 02, 2005 at 12:35:23PM -0800, Jim Carter wrote: > > On Wed, 2 Mar 2005, Maarten wrote: > > > Out of curiosity, is a 'default' SKAS-enabled guest (and without the > > > host-fs kernel option) safe enough as a sandbox to let untrust

RE: [uml-user] inittab and to many processes question

2005-03-05 Thread Halldór Ísak Gylfasson
I had a similar problem, and it turned out it was a problem with the DEV file system. By compiling the old DEV_FS file system into the kernel (CONFIG_DEV_FS) the problem vanished! Halldor -Original Message- From: Scott Granados [mailto:[EMAIL PROTECTED] Sent: Fri 3/4/2005 9:14 PM T