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Thu, 5 Mar 2026 10:05:46 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id PG/oGnpVqWkgVgAAD6G6ig (envelope-from ); Thu, 05 Mar 2026 10:05:46 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id 341E7A0B35; Thu, 5 Mar 2026 11:05:46 +0100 (CET) Date: Thu, 5 Mar 2026 11:05:46 +0100 From: Jan Kara To: Mathieu Desnoyers Cc: Gabriel Krisman Bertazi , Harry Yoo , linux-mm@kvack.org, lsf-pc@lists.linux-foundation.org, Mateusz Guzik , Tejun Heo , Christoph Lameter , Dennis Zhou , Vlastimil Babka , Hao Li , Jan Kara Subject: Re: [LSF/MM/BPF TOPIC] Ways to mitigate limitations of percpu memory allocator Message-ID: References: <87ikbb1o25.fsf@mailhost.krisman.be> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Action: no action X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 430551C000F X-Stat-Signature: a14sr97cnoknycudd7yuf5aa9gpz49rj X-Rspam-User: X-HE-Tag: 1772705148-913857 X-HE-Meta: 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed 04-03-26 23:24:37, Mathieu Desnoyers wrote: > On 2026-03-04 12:50, Gabriel Krisman Bertazi wrote: > > Harry Yoo writes: > > > > > Hi folks, I'd like to discuss ways to mitigate limitations of > > > percpu memory allocator. > > > > > > While the percpu memory allocator has served its role well, > > > it has a few problems: 1) its global lock contention, and > > > 2) lack of features to avoid high initialization cost of percpu > > > memory. > > > > I won't be going to LSF this year. But Jan was the proponent of my > > dual-mode pcpu initialization work and he'll be around. I'm not sure > > this requires a full session either, as it might not grasp broader > > interest. Are Mathieu and Mateusz attending? > > No sorry, I was not planning to attend in person this year. > Is it possible to attend remotely ? We don't offer general remote attendance option but we will have two meeting owls available on site so we can set up something on case-by-case basis. If you're interested in remotely participating in this session, please talk to MM track leaders how / whether they can accommodate this. Honza -- Jan Kara SUSE Labs, CR