On Mon, Dec 9, 2013 at 1:18 PM, Heikki Linnakangas <hlinnakan...@vmware.com>wrote:
> On 12/08/2013 09:56 PM, Alexander Korotkov wrote: > >> On Fri, Nov 29, 2013 at 11:17 PM, Heikki Linnakangas < >> hlinnakan...@vmware.com> wrote: >> >> I'll continue reviewing next week.. >>> >> > Got dragged into other things and didn't make any progress on this last > week. I'm trying again now. > > > Good. Thanks for debug and fixing bugs. >> Can I do anything for this patch now? >> > > I wonder if we're leaving some money on the table, by using varbyte > encoding. Googling around, there are many other compression methods out > there for compressing integer deltas that compress better, and/or > decompress faster. > Ok, I'll try to google around. Probably, there are some better options. > Even if we use varbyte encoding, I wonder if it would be better to treat > block + offset number as a single 48-bit integer, rather than encode them > separately. That would allow the delta of two items on the same page to be > stored as a single byte, rather than two bytes. Naturally it would be a > loss on other values, but would be nice to see some kind of an analysis on > that. I suspect it might make the code simpler, too. Yeah, I had that idea, but I thought it's not a better option. Will try to do some analysis. ------ With best regards, Alexander Korotkov.
