Re: latency Re: ide: Assuming 33MHz
On Tuesday 29 June 2004 02:58 pm, Alvin Oga wrote:
> for best latency performance:
> i'm assuming that you have 15K rpm scsi disks or even 10K ide disks to
> eliminate disk latency
Yep.
> and one ide disk per ide cable and .. and you're using fastest speed ddr
> memory your mb supports
Nope. We're using the fastest ECC DIMMS we could find.
> and tons of memory in the mb, 2GB seems to make some systems run
> "10x faster" since its all in memory instead of disk
Just 1.5GB.
> and you've tuned nfs and the tcp stack to minimum latency for
> fastest delivery across the wire
Gig-eth across a FreeBSD server.
Yeah, we've done some work on it. :)
> but if they other end is on a 56K dialup, it wont matter that we can
> deliver content in 10^-99 seconds
The biggest bottleneck is that our site does a lot of image manipulation for
various reasons. When the user has just requested that we turn a bunch of
300DPI scanned TIFFs into a single PDF, we'd be hard-pressed to overspec our
processing and memory needs. That's the kind of latency reduction I find
myself optimizing for.
Ain't no way I would've told my boss to spend this much on a PHP web
forum. :)
> and more smileys ... :-)
Received loud and clear. :)
--
Kirk Strauser
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