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Re: [PATCH] readhistfile: avoid thousands of lseek(2) syscalls via ftell()
- X-seq: zsh-workers 45398
- From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
- To: Michael Stapelberg <michael+zsh@xxxxxxxxxxxxx>
- Subject: Re: [PATCH] readhistfile: avoid thousands of lseek(2) syscalls via ftell()
- Date: Fri, 7 Feb 2020 21:54:00 -0800
- Cc: "zsh-workers@xxxxxxx" <zsh-workers@xxxxxxx>
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On Thu, Feb 6, 2020 at 11:48 PM Michael Stapelberg
<michael+zsh@xxxxxxxxxxxxx> wrote:
>
> Before this change, zsh startup time was dominated by lseek(2) system calls on
> the history file
Curious. I would have thought stdio buffering would mask most of the
need for lseek()ing by ftell().
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