Received-SPF: pass (google.com: domain of linux-kernel+bounces-9315-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
Date: Thu, 21 Dec 2023 20:33:39 -0800 (PST)
From: David Rientjes <rientjes@google.com>
To: Gang Li <ligang.bdlg@bytedance.com>
cc: Mike Kravetz <mike.kravetz@oracle.com>, Gang Li <gang.li@linux.dev>, 
    David Hildenbrand <david@redhat.com>, Muchun Song <muchun.song@linux.dev>, 
    Andrew Morton <akpm@linux-foundation.org>, 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>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII

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.