[svlug] Sync command slowdown

[James Sparenberg]

On Monday 24 November 2008 18:30:56 Brian J. Tarricone wrote:
> Greg Lindahl wrote:
> 
> > sync is a big club: it syncs all the files in the system instead of
> > just the ones you care about. And it can kill performance for other
> > processes if there are a lot of pages to be written out.
> 
> Though, if you're using ext3, a whole-disk sync() and a single-file 
> fsync() are sadly equivalent with certain (common?) journaling modes.
> 
> (See the not-so-recent Firefox 3 bug[1] relating to fsync() when 
> committing various sqlite databases to disk.)
> 
> 	-brian
> 
> [1] https://bugzilla.mozilla.org/show_bug.cgi?id=421482
> 
> 

Quick note to both who have replied.  Thanks this is useful info to chew 
on.  So far I've used both the default and the the writeback journaling 
methods.  

James