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1195725856 and other mysterious numbers
Last week was the final week for this half's performance review at Facebook, where we write summaries of work and impact we and our peers had over the last h...
Chris Down
Linux SRE and developer living in London, England, currently helping Meta scale to over 3 billion users.
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Visit chrisdown.name → RSS feedOn Hacker News Jan 2020 – Mar 2026
Systems & Performance 4Infrastructure & DevOps 3Software Engineering 1
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Debunking Zswap and Zram Myths
zswap and zram are fundamentally different approaches with different philosophies. If in doubt, use zswap.
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In defense of swap: common misconceptions (2018)
tl;dr: Having swap is a reasonably important part of a well functioning system. Without it, sane memory management becomes harder to achieve.
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Tmpfs inode corruption: introducing inode64
A few months ago I got a report from a service owner that their service was crashing when trying to access certain files stored in tmpfs. This service provid...