From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BF135379960 for ; Fri, 28 Aug 2026 16:09:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787933383; cv=none; b=NG7StRvSsqm1VG23kFs+lm5zao9i1agUGsEYWeLr8DCow/Opi/zt7aqGlHuqRzmDUlUfjKv0LUkeMuBISeutpT41xVQ/yH3gtlc4tHEl7EjumRzZsPpj02k1dIcKEf05E2IV9QP2jKnKEdnbjEyHb26iuNMlekQzcPM7TF0ixiY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787933383; c=relaxed/simple; bh=EloB0katp8AvIPCuQbU503lG6mYrXa7AvQm9QMftF/Q=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=sSXVjZMEVbDjFlI6UEHcGAqBE1LU8fQUpYSg+ng+FTPcv1++Zt7eZYc6z1PAS+c7CWcRDWqSZ8vtk/HTyY2yoteY4w8b9UUYGN6nDS/RsYGdbmgTdZ6U5/Ni0KWGjn1UMLnpv8O8gVGEXxpu5/FSq77eLuWn2gBnvYpSBH9Wyf0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; dkim=pass (1024-bit key) header.d=goodmis.org header.i=@goodmis.org header.b=SUQWHdUr; arc=none smtp.client-ip=216.40.44.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=goodmis.org header.i=@goodmis.org header.b="SUQWHdUr" Received: from omf07.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay10.hostedemail.com (Postfix) with ESMTP id D97DFC03F8; Fri, 28 Aug 2026 16:09:29 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf07.hostedemail.com (Postfix) with ESMTPA id 988AA2002E; Fri, 28 Aug 2026 16:09:20 +0000 (UTC) Date: Fri, 28 Aug 2026 12:10:10 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: David Stevens , Catalin Marinas , Will Deacon , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . 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: <20260828121010.47fa7713@gandalf.local.home> In-Reply-To: <20260828144500.GW776954@noisy.programming.kicks-ass.net> References: <20260827232948.2520558-1-stevensd@google.com> <20260828124758.GP687043@noisy.programming.kicks-ass.net> <20260828103328.633bbfbc@gandalf.local.home> <20260828143540.GV776954@noisy.programming.kicks-ass.net> <20260828144500.GW776954@noisy.programming.kicks-ass.net> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-rt-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: 48z84x6eyt4hnsuag3zedkjkfm3baagp X-Rspamd-Server: rspamout08 X-Rspamd-Queue-Id: 988AA2002E X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX198HxFyXYgEZJwnf72i30sWt/lWTSWMtx0= 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=EloB0katp8AvIPCuQbU503lG6mYrXa7AvQm9QMftF/Q=; b=SUQWHdUrQzbFKVWGZ5xuskpOuRiSRULlG6ryJnBZGwRdZ5u67PBT5epIe0H7xg5SXNEX5TvwjgYAiKgBFn8ZVFZTo/UhBe7uCVkXSTXgl3qel4FHrisSpTHR0cXMEvTruijIo6t+0UY6KTNW3HgB/IH3lcx96mDtLDIYxSkl2wU= X-HE-Tag: 1787933360-956987 X-HE-Meta: U2FsdGVkX1/U5Q0ostoyRiukFyNqFJhukFmTfCLv7rXt7diB6hyl/rZhUovQsUbfRuY/ruuw+CzkC8ZVCbdE5m17xKy+P2Hv3jyfNk0S4gBULlux/YQTMMl9V3ucR2xXxNGvpPJmpCP7P0aDUB8ibU6MmqlECvOPKid5V1OOzQt6NM3cjLlOo9ZuIQpgB8dSi6tyspx69xpNnpLwgNIG3TDSRJvGO7iERa9ou6pry9qFlRoyhFt1aUgs2Vz/JVAzyifFmbQZTDKS6nRAwD3NlsUyrhMO5du3Oou8k5oL+5IF7ADACZKUrPjYxLA7y874Dbta0aVQfHT5D1YLKlytYenuQaXYN9bClOSio+1VJY0xX4vNPnTY50qYg771Vo4/ On Fri, 28 Aug 2026 16:45:00 +0200 Peter Zijlstra wrote: > I realized I actually have a Java thing, the kids have Minecraft, so I > booted that up and I found all of 108 threads. Which is still kinda > insane, but nowhere near the 1000s per app as claimed. Have you looked at how many threads Chome uses? $ ps -eLf|grep chrome | wc -l 930 Of course I probably have 900 tabs open :-p -- Steve