Re: Raw Devices: Increased Performance?
From: Frank Bommarito <75662.112_at_CompuServe.COM>
Date: 1996/07/12
Message-ID: <4s5ed0$jtb$1_at_mhade.production.compuserve.com>#1/1
Date: 1996/07/12
Message-ID: <4s5ed0$jtb$1_at_mhade.production.compuserve.com>#1/1
All true - with one exception.
Going to RAW can allow a significant amount of existing memory to be reallocated - - maybe to database block buffers -- Given that this is where I have seen the most significant performance improvements - Same book mentions upto 3000% - Maybe the 300% was not raw - but - was memory.
Note - RAW devices are usually - faster on random reads - and - slower on sequential reads. -- because the OS is not buffering data.
Frank Received on Fri Jul 12 1996 - 00:00:00 CEST