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RE: bash slow on first 'up-arrow'
- From: "Dave Korn" <dave dot korn at artimi dot com>
- To: <cygwin at cygwin dot com>
- Date: Mon, 27 Feb 2006 13:43:01 -0000
- Subject: RE: bash slow on first 'up-arrow'
On 27 February 2006 13:34, Eric Blake wrote:
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> According to Frank Greco on 2/26/2006 1:39 PM:
>>
>> When I hit 'up-arrow' for the first time, there's a long delay (at least 30
>> secs) and the disk spins like crazy. Then it seems to work fine, so it
>> seems to be looking for something the very first 'up-arrow'.
>
> I've never seen anything like this, but wonder what your history settings
> are at. If you have a huge HISTFILESIZE and HISTSIZE, it might just be
> that bash is spending a lot of time reading the history file into memory,
> possibly triggering some severe page swapping. 'man bash' provides more
> information about tailoring your history. You could also use strace to
> see what bash is doing in response to the first up-arrow, including any
> files it is opening, although I will admit that reading an strace is not
> the easiest thing to decipher.
Filemon from www.sysinternals.com might be a more user-friendly way of
diagnosing this one.
cheers,
DaveK
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