Re: [PATCH v5 0/5] reduce tasklist_lock hold time on exit and do some pid cleanup

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To: Mateusz Guzik <mjguzik@xxxxxxxxx>
Subject: Re: [PATCH v5 0/5] reduce tasklist_lock hold time on exit and do some pid cleanup
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Date: Wed, 5 Feb 2025 21:29:38 +0100
Cc: ebiederm@xxxxxxxxxxxx, brauner@xxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, Liam.Howlett@xxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20250205200929.406568-1-mjguzik@gmail.com>
References: <20250205200929.406568-1-mjguzik@gmail.com>
User-agent: Mutt/1.5.24 (2015-08-30)

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.

References:
- [PATCH v5 0/5] reduce tasklist_lock hold time on exit and do some pid cleanup
  - From: Mateusz Guzik

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