Presence is taking hell lot of time

I have my own xmpp user that is in the friend list of gtalk user. My xmpp user has around 1 lakh of gtalk user. So whenever i restart my bot(user) it takes a hell lot of time[also consumes 100% of my server cpu] to send presence to my gtalk users. How can i prevent this. Need help regarding this. (7036 Bytes)