linux-kernel - Re: [PATCH v5 6/7] hugetlb: parallelize 2M hugetlb allocation and initialization

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Message-Id: <34C3C358-7550-48D6-9421-EAD6C5ED3C35@linux.dev>
Date: Mon, 29 Jan 2024 11:44:12 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: Gang Li <gang.li@...ux.dev>
Cc: David Hildenbrand <david@...hat.com>,
 David Rientjes <rientjes@...gle.com>,
 Mike Kravetz <mike.kravetz@...cle.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Tim Chen <tim.c.chen@...ux.intel.com>,
 Linux-MM <linux-mm@...ck.org>,
 linux-kernel@...r.kernel.org,
 ligang.bdlg@...edance.com
Subject: Re: [PATCH v5 6/7] hugetlb: parallelize 2M hugetlb allocation and
 initialization



> On Jan 26, 2024, at 23:24, Gang Li <gang.li@...ux.dev> wrote:
> 
> By distributing both the allocation and the initialization tasks across
> multiple threads, the initialization of 2M hugetlb will be faster,
> thereby improving the boot speed.
> 
> Here are some test results:
>      test case        no patch(ms)   patched(ms)   saved
> ------------------- -------------- ------------- --------
>  256c2T(4 node) 2M           3336          1051   68.52%
>  128c1T(2 node) 2M           1943           716   63.15%
> 
> Signed-off-by: Gang Li <ligang.bdlg@...edance.com>
> Tested-by: David Rientjes <rientjes@...gle.com>

Reviewed-by: Muchun Song <muchun.song@...ux.dev>

Thanks.