On Sun, Jan 6, 2013 at 3:38 PM, Lars Wirzenius <[email protected]> wrote: > On Sun, Jan 06, 2013 at 02:27:31PM +0100, Jose Carlos Garcia Sogo wrote: >> It wouldn't be bad having a way to do what you ask for. What would be the >> overhead of computing a hash for a full large raw? > > On my laptop, with an Intel Core 2 Duo CPU at 1.86 GHz, md5sum can do > about 250 MB/s:
Well people do use older/slower hardware. > (dd if=/dev/zero bs=1M count=1024 2> /dev/null) | pv | md5sum > /dev/null > > sha1sum is 189 MB/s (for curiosity, cat is 680 MB/s). > > That sounds like the checksum overhead would be insignificant compared > to the speed from reading from CF, SD, or directly from camera. And a lot of people manually copy/rename their files before importing them in-place from their harddisk/ssd. So it's not quite a no-brainer :( Regards, Pascal de Bruijn ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnmore_123012 _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
