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Peter Anvin" , Andrew Morton , Dave Chinner , Qi Zheng , Roman Gushchin , Muchun Song , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , Valentin Schneider , K Prateek Nayak , Uladzislau Rezki , David Hildenbrand , Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Kees Cook , Sebastian Andrzej Siewior , Clark Williams , suleiman@google.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-rt-devel@lists.linux.dev, jstultz@google.com Subject: Re: [RFC 00/10] Reclaimable kernel stacks Message-ID: <20260828103328.633bbfbc@gandalf.local.home> In-Reply-To: <20260828124758.GP687043@noisy.programming.kicks-ass.net> References: <20260827232948.2520558-1-stevensd@google.com> <20260828124758.GP687043@noisy.programming.kicks-ass.net> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX1/SjYl3uwJx4/ioiGGgwrjcuLujqecRKpg= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=goodmis.org; h=date:from:to:cc:subject:message-id:in-reply-to:references:mime-version:content-type:content-transfer-encoding; s=dkim1; bh=txgaP3eXPwGHZiNk+kzD9nMiqpi6Z8kpuswwMKDKk10=; b=PTsDfFpy3Vn67qp+64dLKVjQMOectY5i18n4Kp3f0JbzDuDbg7QuhtcfWz3fQ0TXyhJjaIW8ExLbYtONSHMQyC1lyZxg1V6i+rr5HmbeaXTfnqg0mSKpLe1M7Xz4Ctw9aeW54P5Vi/KVRNyogahr68RbAAuK75JA7ttYZ7ZvTJg= X-HE-Meta: U2FsdGVkX1/ynCiK2eODLPrYZ9tK1G7fze2omD18GRMu+p//Za8+4H8RGGJDHLXLBjpOVe3LkBV8eMOFg5z3gwtX0OJ59kPUZ1lXGuPE1Jngey2WvrHtD2Ios5dJmmCOW6/JzjEJjZR90rWu8s+8+rGI/f3PjKGR+amq7feErZbTZBZRK1a0gZQoVjeHxPsRe1WHdO9gAWNFsSVvOHPGAZ3BLjjMhQSGqs6mMT5JrzNV9F/rZcZ43kHOPupCbE6Oeze20thPJ6wIJ05cvfQ3P1S19nukkkme0//ZjrjG06nJBIEqqfBqKclCyd8maOH2IMWUNDJmDCxPXN7KuEq4eel3RCvHJX/rMXNPrmNloIAPLi5whsjRBjeIKs43ysEB X-Stat-Signature: ztkfmnrpgu49shqhx5dux69fx5guyh4n X-Rspamd-Queue-Id: 7B759140017 X-HE-Tag-Orig: 1787927558-448627 X-Rspamd-Server: rspam02 X-Rspam-User: X-HE-Tag: 1787927571-773903 X-HE-Meta: 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 anivsi59 A4o6nup9DjzsJ6iPitXmNdbUumd4mMcIoy+njYu4t7KEJ4g/wXbAW2yIf/yetikA/GOktD2RZj2K7nxINhq8LQtcbH2BhK3ytqgkng7olpaztK/g= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 28 Aug 2026 14:47:58 +0200 Peter Zijlstra wrote: > > On Android, system processes typically have 2000-3000 threads. App > > processes add 1000s more threads on top of this. > > WTF ?!? Why does that all spawn *that* many threads? Perhaps work on > reducing that some? I guess you never ran Java ;-) -- Steve