Re: What hardware components bottleneck Linux?

From: ray (ray_at_zianet.com)
Date: 02/14/05 

Date: Sun, 13 Feb 2005 22:08:35 -0700

On Sun, 13 Feb 2005 20:31:26 -0800, Mike wrote:

> Rather than asking what hardware you would recommend, let me approach
> it from the other end. What components in a desktop system are most
> likely to cause a performance bottleneck in a Linux system?
>
> To make it interesting, I want to run Apache, I don't expect the world
> to come knocking, I will likely run a relational database such as
> MySQL, and I want to spend about $500 on the tower; no mouse, keyboard,
> display included in the price. How should I allocate my money to
> maximize total system thruput?
>
> First, am I missing anything from the following component list? CPU,
> RAM type, RAM size, bus speed, cache sizes, disk access times, multiple
> disk arms, NIC.
>
> Second, does the Linux distribution that I pick influence the answer?
>
> Third, which of these components is Linux most sensitive to?
>
> Lastly, are there any rules of thumbs for picking component mixtures so
> as to avoid bottlenecks? "No bottlenecks" is defined as the entire
> system failing at once when response time hits the elbow in the
> response time vs. load curve. Pointers to pertinent URL links would be
> appreciated.
>
> --Thank you,
> --Mike Jr.

I expect the bottleneck is going to be your internet connection. Typical
broadband connections are limited to 1.5mbit/sec or thereabouts - so a
gigabit card is not going to help. Next is probably going to be disk
access.

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