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Hi Roman,
I'd like to get the peak memory usage recorded overall time, rather than at a certain time.
Plus, I expect that the systematical way might have better performance compared to userspace sampling.
If I understand correctly, recording the bottom of available free memory might not be helpful for this.
Am I missing something?
Thanks,
Matthew
From: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Sent: Thursday, February 23, 2023 6:30 PM To: Matthew Chae <Matthew.Chae@xxxxxxxx> Cc: Michal Koutný <mkoutny@xxxxxxxx>; Johannes Weiner <hannes@xxxxxxxxxxx>; Michal Hocko <mhocko@xxxxxxxxxx>; Shakeel Butt <shakeelb@xxxxxxxxxx>; Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>; kernel <kernel@xxxxxxxx>; Christopher Wong <Christopher.Wong@xxxxxxxx>; Muchun Song <muchun.song@xxxxxxxxx>; cgroups@xxxxxxxxxxxxxxx <cgroups@xxxxxxxxxxxxxxx>; linux-mm@xxxxxxxxx <linux-mm@xxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx <linux-kernel@xxxxxxxxxxxxxxx> Subject: Re: [PATCH] mm/memcontrol: add memory.peak in cgroup root On Thu, Feb 23, 2023 at 04:22:33PM +0000, Matthew Chae wrote:
> Hi Michal, > > First off, thank you for sharing your opinion. > I'd like to monitor the peak memory usage recorded of overall system or at least cgroup accounted memory through memory.peak. > But it looks like this is not relevant to what I wanted. > It might be good to have some proper way for checking the system's peak memory usage recorded. I guess you might want to do the opposite: instead of tracking the peak usage, you can record the bottom of available free memory. Thanks! |
