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Wed, 5 Feb 2025 20:30:06 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Wed, 5 Feb 2025 21:29:42 +0100 (CET) Date: Wed, 5 Feb 2025 21:29:38 +0100 From: Oleg Nesterov To: Mateusz Guzik Cc: ebiederm@xmission.com, brauner@kernel.org, akpm@linux-foundation.org, Liam.Howlett@oracle.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 0/5] reduce tasklist_lock hold time on exit and do some pid cleanup Message-ID: <20250205202937.GC8754@redhat.com> References: <20250205200929.406568-1-mjguzik@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250205200929.406568-1-mjguzik@gmail.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: ED8AA140011 X-Stat-Signature: gar5kpujdftf58j76n3xyojks5uhktqw X-Rspam-User: X-HE-Tag: 1738787414-988357 X-HE-Meta: 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 jLxwtjSp Fd2ytz5FxJGhBM+CupnDPHePLR1smwqswjSX2ThZn8aFYjnVqWGgc/luQxTTWqJwPzgFviEES9IDiY9s6QmbGmeSz2r/fHOdeYwky+hD4BjoDyMLbJzFlEls5CTxVALr7K7WvMJ3LNdvF2aQmBwu0BfGOwclE5ckigyOHR/TOgM3KesC4oIUk7UAWxFORZoCbMX9+JsMY7VRdyBYf0rn2Mp96KWYI0iE05JKYOMSHZtrn+BnTKj6HocwrF2ZhuzkDe9EpkXKuTT9ZWsYPMtr6vOLuT0K+ZZ2zXIDYwpOg9ahBKvHEwQxPRjbvzN9n49MBUxZDTKLnWQOBCxstebtYJZ5bFJLTD23HAXG0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000022, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 02/05, Mateusz Guzik wrote: > > Whacking this for both add_device_randomness and pids allocation gives > me a 15% speed up for thread creation/destruction in a 24-core vm. Nice. The whole series look good to me. Oleg.