>> kreiserfsd
>No Reiserfs? don't need it.
The default under SuSE SLES7 and SLES8 build is reiserfs. The biggest jump
in memory usage is when OSA is added. The other stuff may or may not be
necessary, but they are not big. And yes, I am using local PW.
Regards, Jim
Linux S/390-zSeries Support, SEEL, IBM Silicon Valley Labs
t/l 543-4021, 408-463-4021, [EMAIL PROTECTED]
*** Grace Happens ***
John Summerfield
<[EMAIL PROTECTED] To: [EMAIL PROTECTED]
afe.com.au> cc:
Sent by: Linux on 390 Subject: Re: Minimum memory size
for zSeries Linux
Port
<[EMAIL PROTECTED]
EDU>
06/23/2003 04:14 PM
Please respond to
Linux on 390 Port
On Mon, 23 Jun 2003, Jim Sibley wrote:
> Does anyone have a useful Linux running on zSeries that is less that 24MB
> with OSA? With LCS? It looks like OSA is a good chunk of code.
>
> I put together a SuSE SLES8 SP2 mimum system (no graphics) and played a
bit
> with memory size. I manipulated mem=??m in /etc/zipl.conf.
>
> Some conclusions:
>
> 1 - I could not ipl in 8m - I got a kernel panic
> 2 - I could IPL with 12m, but it did not load the OSA code.
> 3 - I could IPL at 24m and load the OSA. After starting an ssh login
> sessions and mounting 2 NFS mounts, there was 3372 bytes, on the swap
> volume.
> 4 - at 32m, the swap usage when to zero.
>
> At 24m, I could login with ssh and mount 2 nfs volumes.
>
> The configuration was for 2 CP. There was not a large variance between
LPAR
> and EC (about an additonal 68 useable bytes under LPAR).
>
> SuSE wants to start the following processes:
I presume you want us to pick at this list?
>
> init
> migration_CP (1 per CP)
> kmcheck
> kvventd
> ksoftirqd_CP
> kswapd
> bdflush
> kupdated
> kinoded
> mdrecoveryd
_I think_ you don't need that unless you're using RAID or LVM.
> kreiserfsd
No Reiserfs? don't need it.
> lvm-mpd
Only if you're using LVM.
> qethsoft
> syslogd
> klogd
Only need those two if you want syslog. Probably you do.
> portmap
NFS uses that. OTOH, I _can_ mount NFS without it. Just yesterday I
build a kernel to mount a root filesystem on NFS, and that gets mounted
before it has any user-space programs whatever.
> sshd
> master
> pickup
> qmgr
I think those three are all part of your mail software. Probably, you
can run something smaller such as smail or zmailer (I think zmailer's
small?) - much easier to accomplish with Debian;-)
> atd
> cron
Quite likely you don't need those on a small system. cron's used to
schedule regular jobs, atd to run irregular ones (the at command) and I
suspect most users don't even know about it.
> nscd (7 copies)
System will work without the Name Server Caching Daemon. Gave me grief
once and I simply turned it off.
> login
login's the program (not a daemon) that processes your login
authentication.
If you're trying to run a small useful system, I don't think you need
bother with RAID or LVM: quite probably you can mount the root
filesystem via NFS and only support nfs - no ext2, ext3, Reiser etc.
Oh, I didn't see any authentication daemon - ypbind or equivalent. Are
you using local passwords?
--
Cheers
John.
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