GNU Sed 4.3: 10x Faster Regular Expressions, Faster I/O
Written by Michael Larabel in GNU on 4 January 2017 at 09:45 AM EST. 6 Comments
GNU --
For those making use of GNU's Stream Editor, Sed, for non-interactive command-line text editing there is a new release available.

GNU Sed 4.3 now has regular expression matching that is around ten times faster than previous versions. Also improving the performance in sed 4.3 is unlocked I/O. With the unlocked I/O, the I/O operations are now generally faster too.

Sed 4.3 also has a range of other fixes and minor improvements. More details on this first GNU project release of 2017 can be found via the release announcement and project site.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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