I've found that by tuning the NFS options I can get an install down to around 
15 minutes (~870 packages).  

nfs --server=1.2.3.4 --dir=/export/install/el5_x86_64 
--opts="tcp,nfsvers=3,rsize=32768,wsize=32768"

CC

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Krizak
Sent: Friday, 8 December 2006 9:03 AM
To: Red Hat Enterprise Linux 5 (Tikanga) Beta releases discussion mailing-list
Subject: Re: [rhelv5-beta-list] RHEL5 B2 installs sssllllooowww?


Ed Brown wrote:
>> Yes, though I don't have many data points, having only done a 3 or 4
>> installs so far, and focused on other details (like changes to kickstart 
>> files).

I've done many many (hundreds) of installs, and they're all slow.  I've 
jumped into the shell during an installation to try and locate the 
source of the slowness and have failed.

The hard disks are being accessed at full speed (IDE systems have DMA 
enabled, and SCSI systems are ... SCSI...).  The network is at 
gig/full-duplex.  The network is not dropping packets.  The CPU is not 
pegged, though iowait is through the roof.

I have a feeling it's got something to do with the disk or network 
drivers in the PXE/installer kernel versus the production kernel.

Anybody know a way for me to dig deeper and try to locate the source of 
the slowness?

Paul Krizak                         5900 E. Ben White Blvd. MS 625
Advanced Micro Devices              Austin, TX  78741
Linux/Unix Systems Engineering      Phone: (512) 602-8775
Silicon Design Division             Cell:  (512) 791-0686




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