Hi,

first of all: thanks to Blaisorblade for the answer to my (stupid)
devfs/device question some days ago. You're great!

I'm experimenting more with UML and I'm quite lucky about it, I just came
across severeal questions I'm really stuck with:

First of all, I'ld like to improve swap performance or at least I would like
to attach the swap space externally. The block file in the mounted ubd0
works well, but I always get e2fscks when trying to mount /dev/ubd1 as a
swap partition. Does anyone have a description of a working configuration in
this case? What I want is a kind of

dd if=/dev/zero of=swap_fs bs=1k count=300k
mkswap swap_fs
./linux ubd0=root_fs ubd1=swap_fs mem=35M con=pty con0=fd:0,fd:1

... but that won't really work, as said before. The fstab entry as a swap
device is set and I don't know any further.

Second would be, how to mount a uml file system on a partition instead of a
block device. Is it just using ubd0=/dev/hdc ? That can't be so simple, can
it?

Third is one thing I came across reading the many entries in this list.
Blaisorblade, you once wrote:

> Mainly, Uml is very slow with HIGHMEM, and doesn't need it a lot, 
> especially in SKAS mode...

I'm not using it, yet - but I wish to use a machine with a lot of ram if I
succeed with UML. So: Could you, or someone else, give a short overview of
Do's and Dont's regarding Performance with UML? Like

Highmem Host: Don't - slow memory performance
Highmem Client: Do - don't care

Something like this?

I know this will cause a few minutes to write down - take my thankfulness
for granted - but I think this will make life much easier for lots of
newbies into UML.

Thanks a lot in advance!


-- 
Highspeed-Freiheit. Bei GMX supergünstig, z.B. GMX DSL_Cityflat,
DSL-Flatrate für nur 4,99 Euro/Monat*  http://www.gmx.net/de/go/dsl


-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems?  Stop!  Download the new AJAX search engine that makes
searching your log files as easy as surfing the  web.  DOWNLOAD SPLUNK!
http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click
_______________________________________________
User-mode-linux-user mailing list
User-mode-linux-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user

Reply via email to