Date: Fri, 18 Apr 1997 21:20:41 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: luigi@labinfo.iet.unipi.it (Luigi Rizzo) Cc: dufault@hda.com, hasty@rah.star-gate.com, terry@lambert.org, freebsd-hackers@freebsd.org Subject: Re: video capture driver interface to file system? Message-ID: <199704181150.VAA25353@genesis.atrad.adelaide.edu.au> In-Reply-To: <199704181021.MAA08439@labinfo.iet.unipi.it> from Luigi Rizzo at "Apr 18, 97 12:21:16 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
Luigi Rizzo stands accused of saying: > > and probably, in addition to preallocation, make sure that your write() > calls are aligned to the FS/device blocksize otherwise (probably) each > write will be preceeded by a hidden read to take care of fragmentation ? Not too much of a hit if the previous partial block is still in the cache, though. > Luigi -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199704181150.VAA25353>