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Systems & Performance

The most popular blog posts about systems & performance on Hacker News. 136 posts.

2015
92

Fix your damned data races

Nathan Froyd recently wrote about how he has been using ThreadSanitizer to find data races in Firefox, and how a number of Firefox developers — particular in the networking and JS GC teams — have been fixing these.

108

Fedora 22 released

We are proud to announce the official release of Fedora 22, the community-driven and community-built operating system now available in Cloud, Server, and Workstation editions. If that’s all you need to hear, jump over to Get Fedora to download — or for current users, run the upgrade tool. In addition to the latest…

113

VP9 encoding/decoding performance vs. HEVC/H.264

A while ago, I posted about ffvp9, FFmpeg's native decoder for the VP9 video codec, which significantly outperforms Google's decoder (part of libvpx). We also talked about encoding performance (quality, mainly), and showed VP9 significantly outperformed H.264, although it was much slower. The elephant-in-the-room…

117

Pruning and Polishing: Keeping OpenBSD Modern

Owing to its historic roots as a derivative of the original Berkeley Systems Distribution (BSD), OpenBSD includes a great deal of old code. Many files bear copyright notices from the year 1980, and in some cases, even older. Although not explicitly stated as a project goal, keeping OpenBSD modern is an important part…

118

Perceptual Image Compression at Flickr

At Flickr our users really care about image quality. They also care a lot about how responsive our apps are. Addressing both of these concerns simultaneously is challenging; higher quality images have larger file sizes and are slower to transfer. Slow transfers are especially noticeable on mobile devices. Flickr had…