[ESS] Delay on left-parenthesis

Ken Williams Ken.Williams at windlogics.com
Wed Sep 19 17:17:29 CEST 2012

> -----Original Message-----
> From: Vitalie Spinu [mailto:spinuvit at gmail.com]
> Sent: Tuesday, September 18, 2012 5:57 PM
> To: Ken Williams
> Cc: Rodney Sparapani; ess-help at stat.math.ethz.ch
> Subject: Re: [ESS] Delay on left-parenthesis
>   >> Ken Williams <Ken.Williams at windlogics.com>
>   >> on Tue, 18 Sep 2012 14:51:32 -0500 wrote:
>   > If I open up a brand new *R* buffer and do M-:
>   > (ess-function-arguments "head"), it seems to take around 2 seconds.
>   > The second invocation takes much less than a second.
> 2sec is huge. It should not be. It's a matter of 150 milliseconds on my
> machine. Is completion also slow in plain R? That is, if you type head( and
> then TAB twice, do you see a delay?

Nope, it seems pretty much instant.  That's if I fire up a Windows command shell (or whatever it's called) and do as you suggest.

One thing to note is that in the *R* session that has delays, there are some very large R objects in memory.  Not big enough to make the whole machine sluggish, but if something is walking those objects, that's bound to be very slow.


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