memmory issue on backup / after

[seba22]

Hi,
I have extreamly big problem on my webserver.

Normal when ISPCP is working everything is ok, its took about 600 - 800 MB of ram.

But on Backup time ( night) it's took:

RAM all used free
1.78 GB 1.70 GB 81.95 MB


and, the problem is, backup DONT FREE IT ! after complete... :/

Do you have any idea what should i do, to free this ram, after completed backup ?

Maybye restart apache ?

Please help.
Almost 2 GB of ram , used in 10 h :/

I have this problem befor, but i have 1 GB ram, i think its to small, so i installed 2 GB, this same, its took 1,7 GB, and won't free it :/

Befor backup it's about 600 - 700 Mb, after - 1,7 gb...

This is my TOP output, ordered by memmory usage... i CANT find what proces using this ram !!!