Zack's Kernel News

Zack's Kernel News

Article from Issue 238/2020

Zack Brown looks at improving memory management, simplifying(ish) the Kernel Build System, and detecting firmware crashes.

Improving Memory Management

SeongJae Park wanted to improve Linux's memory management. To do this, he wanted to implement finer-grained data access tracking. Then, using that data, Linux would have a better idea of how to move data around in memory and which data to swap out to disk.

The problem was that finer-grained tracking would take CPU time that the system might otherwise use for executing user code, so there'd be a slowdown. On the other hand, the improved memory management made possible by SeongJae's patch would speed up the system – potentially enough to justify the hit taken by gathering the data.

SeongJae pointed out that there were already patches to take advantage of the kind of fine-grained data he wanted to track, but none of those patches had been merged into the Linux kernel because of the lack of that kind of tracking.


Use Express-Checkout link below to read the full article (PDF).

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Kernel News

    This month in Kernel News: Debugging Production Systems; Patch Submission Guidelines; New Filesystem for SSD and Flash Drives; and Unlocking Memory Access.

  • Open Heart Surgery

    There is only one thing Charly appreciates even less than security holes in the kernel: downtime of his machines. That's why he patches his Ubuntu systems with Canonical's Livepatch on the fly.

  • Kernel News

    Adding git Documentation; Untangling the System Call Situation; and Bit or Bitmap?

  • Kernel News

    Zack Brown reports on: Line Ending Issues; Hardware Hinting; and Simplifying the Command Line.

  • Kernel 2.6.29: Corbet Says Btrfs Next Generation Filesystem

    Linux kernel developer Jonathan Corbet has just previewed the features of the upcoming Linux Kernel 2.6.29 that includes Btrfs, which he claims is the filesystem of the future.

comments powered by Disqus

Direct Download

Read full article as PDF:

Price $2.95