Question: OCSP Service using up quite a bit of bandwidth
I have been tracking down an issue regarding our ISP bandwidth usage (very high).
I believe I have found an issue with the OCSP daemon (ocspd) using up quite a bit of bandwidth for no apparent reason - my initial tests seem to show that this daemon, under Mavericks, is using about 100MB of download bandwidth per day (approx 3GB per month). This is huge considering that this process is meant to cache retrieved results (assuming of course it is getting results).
As a further test, I had 2 Macs running Mavericks and 1 running ML overnight, with all machines running RubberNet to monitor per process bandwidth.
On both Mav machines, the ocspd daemon used up the traffic as per above but ML used no bandiwdth for the same process.
The implications here is that users with bandwidth limited connections (e.g. Satallite or Mobile) will use up much of their allowance when at idle hence my interest.
Can someone verify these findings?
Just a wild thought: Perhaps because the keychain is now sent to iCloud in Mav, I wonder if the certificates are being checked more often for security reasons.
iMac, OS X Mavericks (10.9)