I noticed my cloud server has long initial delay during certain hours. Im hosted at softlayer n the long delay happens during day time in US. My server load did not increase significantly during these times.
Wht could cause this delay? Busy dns at softlayer?
It could be a number of things from your ISP to the SAN unit running on overdrive for other VM's on their cloud and your VM is just a causality. Have you contact SL during this period of time to investigate it?
Can you tell us your server configuration and website content ?
Without this info it seems to be network issues that are caused due to high traffic on another VM in the same machine or router. Or even DoS attacks ( although unlikely). Contacting Softlayer would be the best bet.