DragonFly BSD
DragonFly kernel List (threaded) for 2010-02
[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]

Re: kernel work week of 3-Feb-2010 HEADS UP

From: Magnus Eriksson <magetoo@xxxxxxxxxxx>
Date: Thu, 4 Feb 2010 17:09:52 +0100 (CET)

I usually only lurk on the DF lists, but I just have to jump in and say how cool I think this is. I'll definitely have to try out the next release now..

On Wed, 3 Feb 2010, Matthew Dillon wrote:

:Would such a SSD cache also improve write performance of a HAMMER file
:To improve write performance we'd probably need to put the UNDO/REDO log
:on a SSD...

No, the first iteration is strictly a clean slaved throw-away copy.

. ..but you are leaving some room for also using it as a write cache later, right? Whether it's some special hook for HAMMER's un/redo log, or something completely filesystem agnostic, it seems it could be a huge benefit to some applications. (like databases?)

Just thinking out loud: if you have some resident-like way of "locking" data on the SSD, that might be an interesting way to get something similar to ReadyBoost. (That would perhaps make for a neat GSoC project?)


[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]