RE: [Linux-decnet-user] Restore performance

[Gustavo B. <gb...@na...>]

Well, backup/verify takes almost forever (I stopped the process because
I needed the computer to do some useful stuff).


-----Original Message-----
From: lin...@li...
[mailto:lin...@li...] On Behalf Of
Patrick Caulfield
Sent: Friday, April 23, 2004 11:43 AM
To: lin...@li...
Subject: Re: [Linux-decnet-user] Restore performance


On Fri, Apr 23, 2004 at 11:03:59AM -0300, Gustavo Boado wrote:
> Weird...I tried a backup yesterday... 1.2 GB disk on the Alpha. Backup

> took about 30 minutes, restore about 15 hours. I will keep trying.

OUCH! that sounds like more than just a little filesystem overhead. I
can't imagine what might cause a 30x slowdown like that.

A few things you might like to try:

- run "fal -ae -r exported -vvvv" as root and see if anything odd shows
up.
- Check the fal process for disk or memory thrashing
- try backup/compare & backup/list to see if they are similarly
affected.
- do a tcpdump to see if the packets start getting delayed for any
reason.

I am going to be away for a week from tonight but if you have any
interesting results or ideas I'd like to see them

-- 

patrick


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