Memory Usage Help

While transferring files i see that the cpu% and the mem% vary in the ‘top’ cmd.
But the RES,VIRT & SHR values remain constant. How should i calculate the Avg memory needed? Im i in the wrg direction, if so plz do guide me. Im monitoring vsftp and not ftp , is this crt?

look for the command memtotal in google, hope it help.
or you can simply check like: How do I check the total memory installed in linux.

I monitored using memtotal’s used field but during and after uploading of files i noticed just 2-3 mb changed. Is this ok?

yeah, it should effect the result