From: Uladzislau Rezki <urezki@gmail.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Brendan Jackman <jackmanb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
Uladzislau Rezki <urezki@gmail.com>,
"Vishal Moola (Oracle)" <vishal.moola@gmail.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 0/2] Free contiguous order-0 pages efficiently
Date: Tue, 6 Jan 2026 12:34:29 +0100 [thread overview]
Message-ID: <aVzzRU-VkHpJlpps@pc636> (raw)
In-Reply-To: <aVyRz62kQbPe5HbI@casper.infradead.org>
On Tue, Jan 06, 2026 at 04:38:39AM +0000, Matthew Wilcox wrote:
> On Mon, Jan 05, 2026 at 04:17:36PM +0000, Ryan Roberts wrote:
> > Hi All,
> >
> > A recent change to vmalloc caused some performance benchmark regressions (see
> > [1]). I'm attempting to fix that (and at the same time signficantly improve
>
> Unfortunately, there was no [1] ... I'm not sure this benchmark is
> really doing anything representative. But the performance improvement
> is certainly welcome; we'd deferred work on that for later.
>
When discussed the high-order preference allocation patch, i noticed
a difference in behaviour right away. Further investigation showed that
the free path also needs to be improved to fully benefit from that change.
I can document the test-cases in the test_vmalloc.c if it helps. Also
i can add more focused benchmarks for allocation and free paths.
--
Uladzislau Rezki
prev parent reply other threads:[~2026-01-06 11:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-05 16:17 [PATCH v1 0/2] Free contiguous order-0 pages efficiently Ryan Roberts
2026-01-05 16:17 ` [PATCH v1 1/2] mm/page_alloc: Optimize free_contig_range() Ryan Roberts
2026-01-05 17:15 ` Zi Yan
2026-01-05 17:31 ` Ryan Roberts
2026-01-07 3:32 ` Zi Yan
2026-01-12 13:24 ` Ryan Roberts
2026-01-12 15:57 ` Zi Yan
2026-01-12 18:21 ` Ryan Roberts
2026-01-12 18:58 ` Zi Yan
2026-01-05 16:17 ` [PATCH v1 2/2] vmalloc: Optimize vfree Ryan Roberts
2026-01-06 4:36 ` Matthew Wilcox
2026-01-06 9:47 ` David Laight
2026-01-06 11:04 ` Ryan Roberts
2026-01-05 16:26 ` [PATCH v1 0/2] Free contiguous order-0 pages efficiently David Hildenbrand (Red Hat)
2026-01-05 16:36 ` Zi Yan
2026-01-05 16:41 ` Ryan Roberts
2026-01-06 4:38 ` Matthew Wilcox
2026-01-06 11:10 ` Ryan Roberts
2026-01-06 11:34 ` Uladzislau Rezki [this message]
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