From: Andrew Morton <akpm@linux-foundation.org>
To: yangge1116@126.com
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
21cnbao@gmail.com, david@redhat.com,
baolin.wang@linux.alibaba.com, hannes@cmpxchg.org,
vbabka@suse.cz, liuzixing@hygon.cn
Subject: Re: [PATCH V4] mm: compaction: use the proper flag to determine watermarks
Date: Mon, 27 Jan 2025 13:20:08 -0800 [thread overview]
Message-ID: <20250127132008.917711e60d76d334cbde8525@linux-foundation.org> (raw)
In-Reply-To: <1737788037-8439-1-git-send-email-yangge1116@126.com>
On Sat, 25 Jan 2025 14:53:57 +0800 yangge1116@126.com wrote:
> From: yangge <yangge1116@126.com>
>
> There are 4 NUMA nodes on my machine, and each NUMA node has 32GB
> of memory. I have configured 16GB of CMA memory on each NUMA node,
> and starting a 32GB virtual machine with device passthrough is
> extremely slow, taking almost an hour.
>
> ...
>
> After this fix, it only takes a few tens of seconds to start a 32GB
> virtual machine with device passthrough functionality.
An hour is unacceptable - I'll add cc:stable to this.
If this is a regression then a Link: tag would be nice. Or perhaps the
kernel had always done this.
prev parent reply other threads:[~2025-01-27 21:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-25 6:53 yangge1116
2025-01-27 21:20 ` Andrew Morton [this message]
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