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| From | Chet Ramey <chet.ramey@case.edu> |
| Newsgroups | gnu.bash.bug |
| Subject | Re: Optimisation request |
| Date | Thu, 29 Nov 2018 09:02:28 -0800 |
| Organization | ITS, Case Western Reserve University |
| Lines | 22 |
| Approved | bug-bash@gnu.org |
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| To | Martijn Dekker <martijn@inlv.org>, Bug reports for the GNU Bourne Again SHell <bug-bash@gnu.org> |
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On 11/26/18 1:29 PM, Martijn Dekker wrote: > I've noticed bash-5.0beta is quite a bit faster than bash-4.4 in running a > lot of pure shell code. Good news. > > One optimisation that isn't done yet: if a subshell function like > > f() (foo) > > is used in a command substitution, it forks twice. I would like it if it > could be optimised to eliminate the fork if the subshell function is the > last command in the command substitution. There is already code to optimize subshell commands like this; it's just disabled until bash-5.1 so I have more time to test it. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/
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Re: Optimisation request Chet Ramey <chet.ramey@case.edu> - 2018-11-29 09:02 -0800
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