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...e customers that are on this list and are using EMC Powerpath or HP Securepath and have performance problems while using ocfs and point to ocfs first. the actual io overhead for an io on ocfs compared to raw, when it's database io is negligable, we don't do any locking, we have about 40000 clockticks of processing from logical to physical offset, nothingin todays cpu world. Every real setup with a stable io stack has shown that we are at the same performance as raw io, we use up about 1.5% more cpu but that's it. In many cases where customers had complaints about performance it turned out...