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[34.64.91.125]) by smtp.gmail.com with ESMTPSA id n14sm8534693pfo.156.2021.10.29.23.12.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Oct 2021 23:12:08 -0700 (PDT) Date: Sat, 30 Oct 2021 06:12:04 +0000 From: Hyeonggon Yoo <42.hyeyoo@gmail.com> To: Matthew Wilcox Cc: Christoph Lameter , Linux Memory Management List , LKML , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Vlastimil Babka Subject: Re: Do we really need SLOB nowdays? Message-ID: <20211030061204.GA27203@kvm.asia-northeast3-a.c.our-ratio-313919.internal> References: <20211017042852.GA3050@kvm.asia-northeast3-a.c.our-ratio-313919.internal> <20211017133618.GA7989@kvm.asia-northeast3-a.c.our-ratio-313919.internal> <20211017135708.GA8442@kvm.asia-northeast3-a.c.our-ratio-313919.internal> <20211028100414.GA2928@kvm.asia-northeast3-a.c.our-ratio-313919.internal> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Stat-Signature: 48mixmeadg4oan56rm1e8i8ag8hmhs8e Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=X1oHkBk0; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf28.hostedemail.com: domain of 42.hyeyoo@gmail.com designates 209.85.214.179 as permitted sender) smtp.mailfrom=42.hyeyoo@gmail.com X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 41A3590000A1 X-HE-Tag: 1635574330-853862 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Oct 28, 2021 at 01:08:02PM +0100, Matthew Wilcox wrote: > On Thu, Oct 28, 2021 at 10:04:14AM +0000, Hyeonggon Yoo wrote: > > On Mon, Oct 25, 2021 at 10:17:08AM +0200, Christoph Lameter wrote: > > > On Mon, 18 Oct 2021, Hyeonggon Yoo wrote: > > > > > > > > Better for what use case? SLOB is for machines with 1-16MB of RAM. > > > > > > > > > > > > > 1~16M is smaller than I thought. Hmm... I'm going to see how it works on > > > > tiny configuration. Thank you Matthew! > > > > > > Is there any reference where we can see such a configuration? Sure it does > > > not work with SLUB too? > > > > I thought why Matthew said "SLOB is for machines with 1-16MB of RAM" > > is because if memory is so low, then it is sensitive to memory usage. > > > > (But I still have doubt if we can run linux on machines like that.) > > I sent you a series of articles about making Linux run in 1MB. Oh I missed your mail, I'm gonna read this! Thanks! Thanks, Hyeonggon.