Re: [PATCH v2] lib: test bitmap vs IDA vs Maple Tree performance for region allocations

Yury Norov <[email protected]> Thu, 16 Jul 2026 19:57:06 -0400
Newsgroups dev.linux.lists.nova-gpu,org.freedesktop.lists.dri-devel,org.kernel.vger.linux-kernel,org.kernel.vger.rust-for-linux
Message-ID <allv0n0_xgE_IpyP@yury>
On Thu, Jul 16, 2026 at 03:02:04PM +0100, Matthew Wilcox wrote:
> On Wed, Jul 15, 2026 at 08:52:52PM -0400, Yury Norov wrote:
> > The test is very well motivated by that discussion. I'm not saying
> > it compares apples to apples. I'm trying to quantify the answer to a
> > very specific question: what is better for NOVA ID allocator. Or more
> > broadly: what's the best data structure for range ID allocators of a
> > given capacity.
> 
> From my work with the IDA, there are definitely ID allocators which
> allocate only a single ID, less than ten or less than a hundred.  Could
> you scale the benchmark down to 10 and 100 rather than starting at 1000?

OK.