From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh Users <zsh-users@zsh.org>
Subject: Re: One more heap optimization trick for zsh < 5.2
Date: Sun, 8 May 2016 09:35:30 -0700 [thread overview]
Message-ID: <160508093530.ZM9686@torch.brasslantern.com> (raw)
In-Reply-To: <CAKc7PVDRk2hx9i0T62fnD=v__1RbB9sPr5ni_mHXLojVa4sotA@mail.gmail.com>
On May 8, 11:34am, Sebastian Gniazdowski wrote:
} Subject: One more heap optimization trick for zsh < 5.2
}
} repeat 1; do
} list=( "${(@M)list:#(#i)*$~search_pattern*}" )
} done
}
} I've recently found my system to be less responding to this trick.
Is $list getting larger e.g. you are accumulating more shell history
to be searched or the like? IIRC the "repeat 1" trick caused a new
heap arena to be pushed instead of searching for free space in an
existing heap, but if $list is large enough to need multiple heap
arenas you may end up right back in the free space hunt.
} I thought that there's maybe an even better way
} to change how heap works for given operation?
If the size of $list is indeed the deciding factor here, I would
suspect that you're now running into heap management during the
pattern match against $~search_pattern, and there's really nothing
at the level of shell coding that can change pattern match behavior.
But all of that is speculation.
next prev parent reply other threads:[~2016-05-08 16:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-08 9:34 Sebastian Gniazdowski
2016-05-08 16:35 ` Bart Schaefer [this message]
2016-05-16 15:01 ` Sebastian Gniazdowski
2016-05-17 10:18 ` Bart Schaefer
2016-05-18 15:16 ` Sebastian Gniazdowski
2016-06-11 3:30 ` Bart Schaefer
2016-06-11 7:40 ` Sebastian Gniazdowski
2016-06-11 8:07 ` Sebastian Gniazdowski
2016-06-12 15:39 ` Bart Schaefer
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