On 22/03/13 22:47, Patrick Shanahan wrote: > * Michael Schuster <[email protected]> [03-22-13 02:10]: > [...] >> "export" sounds like I/O, so if that's your perceived bottleneck, perhaps >> you should measure first whether that's really the case -- if this were >> Solaris, I'd say "use iostat, then DTrace", I don't know what Linux offers >> here; the one I use at work seems to know iostat at least. >> >> If the suspicion about I/O is indeed correct, fiddling with the CPU specs >> won't gain you much, I'd then much rather invest in a (bigger/nother) SSD >> and/or more RAM. > Yes, in modern boxes i/o is the bottleneck not cpu. Investing in an ssd > drive at least for operating system and sata-3 raid-5 fast hard drives > will help tremendously.
If you're going to go beyond using single disks, then given how cheap disk is these days, RAID-10 makes more sense than RAID-5 if performance is what you want. The performance is better (no parity to write), redundancy is better (even two failed disks won't take you out unless they happen to be a mirror pair), and in the event of drive failure and replacement, array performance while the rebuild is taking place is markedly better. In the 25 or so years I've been supporting RAID arrays on LANs (and more recently SANs), it's gone from being RAID-5 if you wanted redundancy to hardly ever seeing a RAID-5 array any more. Nick ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
