From: Dameon Wagner Sent: Thursday, November 05, 2015 3:01 AM
Just a simple question, is /var/lib/openldap-data/accesslog on the same physical disk as the rest of your directory storage? I note from your initial thread on the kerberos list that there's small io spike at the same time, so it may be beneficial to have the accesslog on different spindles if possible.
Yes, it is. The system is a basic 1U server with a hardware RAID card and mirrored disks. I don't have any other spindles 8-/. One of my colleagues is giving me the big "I told you so", as he advocated upgrading to the hardware RAID card with a battery backed write cache which might have prevented this issue. The rest of us didn't think the extra expenditure was worth it for a Kerberos server which typically doesn't have very high performance requirements <sigh>. I guess I'm going to try purging the accesslog more frequently and seeing if that reduces the individual purge load to a low enough level that it doesn't impact service response.
Thanks.