Re: Problem identified: WAPL/RAIDframe performance problems
Thor Lancelot Simon <[email protected]> Wed, 28 Nov 2012 15:52:25 -0500
| Newsgroups | gmane.os.netbsd.devel.kernel,gmane.os.netbsd.devel.performance |
|---|---|
| Message-ID | <[email protected]> |
On Wed, Nov 28, 2012 at 06:41:28PM +0100, J. Hannken-Illjes wrote: > On Nov 28, 2012, at 6:02 PM, Greg Troxel <[email protected]> wrote: > > Do you see this on RAID-1 too? > > > > I wonder if it's possible (easily) to make the log only use fsbize > > boundaries, (maybe forcing it to be bigger as a side effect.) > > Sure -- add fsbsize sized buffer to struct wapbl and teach wapbl_write() > to collect data until the buffers start or end touches a fsbsize boundary. It is worth looking at the extensive work they did on this in XFS.