linux-kernel - Re: Let's talk about the elephant in the room - the Linux kernel's inability to gracefully handle low memory pressure

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Message-ID: <ed477e7f-e159-6bf7-efa9-5d82cea3da96@georgianit.com>
Date:   Tue, 6 Aug 2019 15:43:43 -0400
From:   Remi Gauvin <lkml@...rgianit.com>
To:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Let's talk about the elephant in the room - the Linux kernel's
 inability to gracefully handle low memory pressure

Sorry, I don't have the original message to reply to.. But to those
interested, I have found a solution to the kernel's complete inability
to allocate more memory when it needs to swap out.

Increase the /proc/sys/vm/watermark_scale_factor from the default 10 to 500

It will make a huge difference, especially with swap on SSD, the kernel
will swap out gracefully to allocate more memory, and you can get a few
GB more memory in use before really noticing performance problems.