The Haiku developers have been polishing their lightweight operating system, which continues the design and work started by BeOS. The Haiku developers have made a lot of progress recently in improving the performance of their already snappy operating system. In particular, writes to disks are getting faster: "I noticed that it had a hard-coded 2-second timeout in-between write-backs, to avoid disk congestion (and to avoid writing back blocks that were likely to be modified again). This meant it could fill up and then applications would be stuck waiting for it to write out the dirtied blocks (which was the cause of the long-standing 'Tracker stops and starts while emptying Trash'), among other slownesses. (Probably when this code was first written over a decade ago it was not as much of a bottleneck.) Now we instead compute a dynamic timeout based on how long the last block writes took, which can be a 10x performance difference (on HDDs) or even a 100-200x performance improvement (on SSDs)." Other improvements are mentioned in the Haiku monthly newsletter.
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