Re: [R] Cleaning up memory in R

From: Anh Tran <>
Date: Wed, 14 May 2008 13:16:07 -0700

Sorry, it's the stupid mistake on my part. Please forgive that question. I have to unload the variable first.

On Wed, May 14, 2008 at 1:12 PM, Duncan Murdoch <> wrote:

> On 5/14/2008 3:59 PM, Anh Tran wrote:
>> I'm trying to work on a large dataset and after each segment of run, I
>> need
>> a command to flush the memory. I tried gc() and rm(list=ls()) but they
>> don't
>> seem to help. gc() does not do anything beside showing the memory usage.
> How do you know it does nothing? R won't normally release memory to the
> OS, but it is still freed to be reused internally in R.
> On the other hand, if you still have references to the variables, then gc()
> really will do nothing.
> Duncan Murdoch
> I'm using the package BSgenome from BioC.
>> Thanks a bunch

Anh Tran

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