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Thu, 21 Dec 2023 20:33:41 -0800 (PST) Received: from [2620:0:1008:15:184:1476:510:6ea1] ([2620:0:1008:15:184:1476:510:6ea1]) by smtp.gmail.com with ESMTPSA id a3-20020a17090abe0300b0028bc09a5e1fsm2613387pjs.12.2023.12.21.20.33.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Dec 2023 20:33:40 -0800 (PST) Date: Thu, 21 Dec 2023 20:33:39 -0800 (PST) From: David Rientjes To: Gang Li cc: Mike Kravetz , Gang Li , David Hildenbrand , Muchun Song , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v2 0/5] hugetlb: parallelize hugetlb page init on boot In-Reply-To: <46bc7aa3-4b08-4e5f-9563-485ee17e2785@bytedance.com> Message-ID: <4c6de257-ebb4-e9ad-4092-b81a8039aff4@google.com> References: <20231208025240.4744-1-gang.li@linux.dev> <996ba32c-78f0-1807-5e64-af5841a820e7@google.com> <20231212230813.GB7043@monkey> <55c6c1f6-0792-61c3-86ed-4729d4a3fdf5@google.com> <46bc7aa3-4b08-4e5f-9563-485ee17e2785@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 78B18C0015 X-Stat-Signature: ea1onnqbuuu34s5uu4bmqzkhfgsnu6e8 X-HE-Tag: 1703219622-50270 X-HE-Meta: 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 8sMNdBR6 B/G8XHZypoukBkA28lnIgiTt7IfnPKL46qs9/gl1IeIePBY4N0F8F09xZ1uiAUsft/6aBMXiEc4PCYAHggGGTbIP18aPaCZLGPw/hMER/yewExaPUuDIoz0D6n45IelgJezKgCVBxzliN9DZRLJgkjgmwpVa1psT++zK8TvnVFiQO6JH5vxsLwPafQNWCsTkg1aw6rSmhbdzbUCISbS4zBjjqh5UhXbJmDofCOUk3yF7yKDHegNcP6uNCJMOVT/Gvh3aR2RcEkNaX1Aip/RYC3LNvxXA0UI9/U9GPBafiJum4nrduIBbrRy08uRqenwCeymw2nkNDLsNBdhdWI+AHD+xN9EV91s6yAhHxyFG9Mg1L3hpYy5egwTh/F2Rlmq9BSvoaJ22fXhU46yBCEYAFlS4Alg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000442, 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 Mon, 18 Dec 2023, Gang Li wrote: > Hi, > > On 2023/12/13 08:10, David Rientjes wrote: > > On 6.6 I measured "hugepagesz=1G hugepages=11776" on as 12TB host to be > > 77s this time around. > > Thanks for your test! Is this the total kernel boot time, or just the > hugetlb initialization time? > Ah, sorry for not being specific. It's just the hugetlb preallocation of 11776 1GB hugetlb pages, total boot takes a few more minutes. > > A latest Linus build with this patch set does not boot successfully, so > > Which branch/tag is it compiled on? > I test this patch on v6.7-rc4 and next-20231130. > It was the latest Linus tip of tree. I'll continue to try again until I get a successful boot and report back, serial console won't be possible for unrelated reasons.