> On Thu, 9 Apr 2015 14:40:16 -0500, Sean McBride said: > > Not just IO, but memory usage too. If you have 24 cores, and GCD spins up > 24 simultaneous 'tasks', and each needs 2 GB of RAM, then you better hope > you have 48 GB of RAM too, or you'll swap and easily end up dog slow.
I just now ran a small 600 task subset on an 8-core iMac, and I got these performance numbers: Memory usage: 800MB (100MB per task) CPU usage: 93.75% (over all cores) Energy impact: Very high Disk I/O: 800 KB/s So, I'm thinking this should scale well to the 24 core MacPro w/32GB RAM. Thx all for the great help! -Carl _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
