From: Minchan Kim <minchan@kernel.org>
To: Richard Chang <richardycc@google.com>
Cc: rostedt@goodmis.org, mhiramat@kernel.org,
mathieu.desnoyers@efficios.com, akpm@linux-foundation.org,
liumartin@google.com, surenb@google.com,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH v2] mm: add alloc_contig_migrate_range allocation statistics
Date: Wed, 28 Feb 2024 09:58:35 -0800 [thread overview]
Message-ID: <Zd90S7RVgCfwtpxZ@google.com> (raw)
In-Reply-To: <20240228051127.2859472-1-richardycc@google.com>
On Wed, Feb 28, 2024 at 05:11:17AM +0000, Richard Chang wrote:
> alloc_contig_migrate_range has every information to be able to
> understand big contiguous allocation latency. For example, how many
> pages are migrated, how many times they were needed to unmap from
> page tables.
>
> This patch adds the trace event to collect the allocation statistics.
> In the field, it was quite useful to understand CMA allocation
> latency.
>
> Signed-off-by: Richard Chang <richardycc@google.com>
Acked-by: Minchan Kim <minchan@kernel.org>
prev parent reply other threads:[~2024-02-28 17:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-26 10:00 [PATCH] mm: add alloc_contig_migrate_range allocation statistics Richard Chang
2024-02-26 17:06 ` Steven Rostedt
2024-02-26 17:07 ` Steven Rostedt
2024-02-28 5:11 ` [PATCH v2] " Richard Chang
2024-02-28 14:47 ` Steven Rostedt
2024-02-28 17:58 ` Minchan Kim [this message]
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