Hi!

I'd like to ask what are required amounts of:
1) memory,
2) CPU (number, frequency)
in below situation (more or less of course)?

I have site running which gets 53.187.873 Apache access log a month.

That would mean approx and average 20requests/s

Of course given number is bigger in a day and smaller in a night.
Let's say it can be 35r/s in day peak.

As of 2.179.809 request taken in 24hours (average 25req/sec) there've been:
a) 1.652.310 static requests - most .gif .jpg small files - it's 75.6%
b) 527.499 long lasting dynamic requests - more than 10 seconds

Let's assume I want to have "heavy loaded" backends to process dynamic
content. Static content - let's assume it could be only one machine and
it could be same machines as Pound is running (general entrance point).

Of course I'd like to have strong, heavy machines for backends, but I'd like
to have light machine for front (where Pound is running). Idea is to be sure
that noone would ever get to idea of placing somewhere else on that front.

Assume backends are 2xDualCoreXeon, 4GB RAM. What are in your
opinion an from your experience minimal requirements for machine
carrying Pound on front.

The only problem I see is that having 20 quite long lasting requests per
second, the would be huge pool of kept tracked requests waiting for
getting data from backend - but how much memory it would need?

ThanksInAdvance;
AdamLis;

Hi,
I've got a similar load here of about 20-30 requests a second during
business hours, and around 0-3 request a second at night.

It's running on a 733MHz PIII with 256MB of ram and it's doing it easy.
CPU is sits at less than 20%.


Hope this helps.

Jon Higgs


Adam Lis wrote:

  Hi!

I'd like to ask what are required amounts of:
1) memory,
2) CPU (number, frequency)
in below situation (more or less of course)?

I have site running which gets 53.187.873 Apache access log a month.

That would mean approx and average 20requests/s

Of course given number is bigger in a day and smaller in a night.
Let's say it can be 35r/s in day peak.

As of 2.179.809 request taken in 24hours (average 25req/sec) there've been:
a) 1.652.310 static requests - most .gif .jpg small files - it's 75.6%
b) 527.499 long lasting dynamic requests - more than 10 seconds

Let's assume I want to have "heavy loaded" backends to process dynamic
content. Static content - let's assume it could be only one machine and
it could be same machines as Pound is running (general entrance point).

Of course I'd like to have strong, heavy machines for backends, but I'd like
to have light machine for front (where Pound is running). Idea is to be sure
that noone would ever get to idea of placing somewhere else on that front.

Assume backends are 2xDualCoreXeon, 4GB RAM. What are in your
opinion an from your experience minimal requirements for machine
carrying Pound on front.

The only problem I see is that having 20 quite long lasting requests per
second, the would be huge pool of kept tracked requests waiting for
getting data from backend - but how much memory it would need?

ThanksInAdvance;
AdamLis;

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I get consistent 20 to 25 requests/s during business hours with pretty long
lasting requests as you described.
My pound machine is a Virtual Machine on a VMWare ESX host with only 512MB
of RAM.
It never passed 5% of CPU usage, load average is lover than 0.2 and attached
is my memory usage graph for a week.

On Jan 14, 2008 7:14 AM, Jon Higgs <it(at)ixplore.com.au> wrote:
[...]

[...]

Yes, any modern hardware is enough for this load today. My site serves
over 150M req/day (peak is about 3000 req/sec) so I need two two-way
Xeon servers but it is not this case.

Pavel

On 1/14/08, Francois Rejete <francois(at)rejete.com> wrote:[...]