Making /bin/sh == bash. Has the time come?

Eric Blake ebb9@byu.net
Mon Jun 20 13:26:00 GMT 2005


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According to Corinna Vinschen on 6/11/2005 2:49 AM:
>>>Looks like the time has come.
>>
>>Wow.  I never expected that bash would actually be faster.
>>
>>I would appreciate getting a few more benchmarks for other packages.
>>If this holds out then moving to bash is a no-brainer.
> 
> 
> Looks like we're just waiting for Eric Blake to return from vacation.

Well, I've just returned, but have several hundred emails to plow through
to see what else happened while I was out.  Have any of these benchmarks
been run with the bash-3.0-2 experimental version?

Currently, bash-3.0-2 dynamically links in libintl and libiconv (along
with at least sed and coreutils, which is a good reason that these
libraries should be made part of the base packages).  Does dynamic linking
affect the time for a fork() to take place, positively or negatively?
Also, I am still waiting for an updated libreadline6 package before bash
can dynamically link against libreadline as opposed to its own static
version of readline.  And it will take some time before I can audit the
bash source code to see if there are any fork/exec pairs that can be
rewritten with a spawn idiom, to see if that offers any speed improvements.

- --
Life is short - so eat dessert first!

Eric Blake             ebb9@byu.net
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