Finally I've managed to install Pecl APC thanks to wiki page of dreamhost but I have a problem. It seems that there is a bug etc. so the wiki suggests me to use uploadprogress pecl package. I've tried to install it with: "pecl install uploadprogress-beta" command but I'm getting an error as "Allowed memory size of 8388608 bytes exhausted"
Can somebody help me about uploadprogress installation please?