Am 2007-04-05 10:05:34, schrieb Craig Sanders:
> yep, that and postfix (or other MTA) queues.
>
> disk i/o is the main bottleneck in any mail server. if you can offload
> that to fast (but battery-backed!), ram-disk then you have a massive
> performance gain on a loaded mail server.
AFAIK need the journal or ext3 at least 32 MByte
and then per GByte storage 8 MByte again
Which mean, I have a journal of over 28 GByte!
(Raid-5: 13x 300 GByte + 2x 300 GByte HotSpare)
> lot cheaper than an I-RAM. about $50 AUD for a brand-new 80GB drive,
> which is about the smallest drive you can get nowadays.
I can not believe that a HSS with PATA Hardware can support an
external ext3 Journal for a very fast Raid-5 of 3600 GByte.
> i.e. spend $50 on a new SATA drive for the external journal device
> and get 80-90% of the performance improvement that you would get for
> spending $500 on a 4GB I-RAM.
Better to use a Western Digital WD360 Raptor which is SATA
but Hardware is SCSI and costs around 96 Euro (~130US$).
Thanks, Greetings and nice Day
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant
--
Linux-User #280138 with the Linux Counter, http://counter.li.org/
##################### Debian GNU/Linux Consultant #####################
Michelle Konzack Apt. 917 ICQ #328449886
50, rue de Soultz MSN LinuxMichi
0033/6/61925193 67100 Strasbourg/France IRC #Debian (irc.icq.com)
Attachment:
signature.pgp
Description: Digital signature