Apache problem - huge swap!

Hi,

I have Dual P3 1400 with 1Gb ram, 40Gb ide 7200.
We're getting arounf 60K of daily uniques 5-6M hits daily.

Recently we've upgraded to
Apache 1.3.28
PHP 4.3.3
MySQL 3.23.57

I noticed that server started to use a lot of swap. It frows up to 500Mb in just a few hours at peak time.

Top:
PHP Code:
             total       used       free     shared    buffers     cached
Mem
:       1029644    1019732       9912          0      14600     243124
-/+ buffers/cache:     762008     267636
Swap
:      2096472     445820    1650652 
.

What may cause it to act like this?

thanks,
:cheers:

 

 

 

 

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