James Gray wrote:
Is there anything to be gained by switching to AUFS in a SCSI RAID 0+1 (real hardware RAID with 64MB cache etc) environment? How long is a piece of string....I know - just curious from a "theoretical" point of view.
We often see system (i.e., not "nice" or "user") utilisation go up under heavy Squid load on FreeBSD, but I can't say whether or not this results in a noticeable performance degradation - we've never measured it and the users haven't complained (about proxy performance anyway).
FreeBSD is not a supported environment for AUFS, as far as I know. You would use diskd instead, but it doesn't do anything on a single device system, as I assume you have. AUFS on a single disk system does make a measurable difference (regardless of controller and RAID).
RAID of any sort is usually not recommended for Squid if performance matters to you at all.
