On Fri, Mar 27, 2009 at 02:53:49PM +0800, Tim Post wrote: > Sorry, typo: > > On Fri, 2009-03-27 at 14:50 +0800, Tim Post wrote: > > Hi, > > > > I was wondering why vblade used a helper script and logger instead of > > using daemon() and syslog() directly? Also, why not use posix_fadvse() > > with POSIX_FADV_RANDOM when -d (O_DIRECT) is not specified? I have a > > very clunky desktop with old IDE drives, its hard for me to test if > > doing so would actually improve things. > > s/_fadvse/_fadvise/
Hi, Tim Post. With "vbladed", I was probably influenced by Dan Bernstein, who says that a process should not daemonize itself when an external program could do it if and when necessary. It certainly does tend to make the C code cleaner when the program is written for the general case and can be used either way. Regarding fadvise, I am not sure whether POSIX_FADV_RANDOM would be helpful, especially since the user might intend to do mostly sequential accesses. It might be interesting to hear about cases where it does (and doesn't) help, though. -- Ed Cashin <ecas...@coraid.com> Find experimental aoe Linux driver patches at http://coraid.typepad.com/aoe_linux_proving_grounds/ ------------------------------------------------------------------------------ _______________________________________________ Aoetools-discuss mailing list Aoetools-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aoetools-discuss
