Re: [zfs-discuss] ZFS write throttling

2008-02-15 Thread Philip Beevers
heckpoints. Is > this a concern ? That's good news. No, the loss of initial performance isn't a big problem - I'd be happy for it to go at spindle speed. Regards, -- Philip Beevers Fidessa Infrastructure Development mailt

[zfs-discuss] ZFS write throttling

2008-02-15 Thread Philip Beevers
of thing off. Of course, the ideal would be to have some way of telling ZFS not to bother keeping pages in the ARC. The latter appears to be bug 6429855. But the underlying behaviour doesn't really seem desirable; are there plans afoot to do any work on ZFS write throttling to address this kind

Re: [zfs-discuss] ZFS RAM requirements?

2006-05-03 Thread Philip Beevers
Roch Bourbonnais - Performance Engineering wrote: Reported freemem will be lower when running with ZFS than say UFS. The UFS page cache is considered as freemem. ZFS will return it's 'cache' only when memory is needed. So you will operate with lower freemem but won't actually suffer fr