[Bioperl-l] Call to users/developers -- user cases that bring Bioperl to its knees

Charles Plessy charles-listes+bioperl at plessy.org
Wed Feb 25 01:11:57 EST 2009

Le Mon, Feb 23, 2009 at 04:06:21PM +0000, Albert Vilella a écrit :
> Can interested users/developers provide a URL with a dataset that
> brings bioperl to its knees in
> terms of CPU usage for say, about 1h?

Dear Albert,

I do not know if it fits your requirements, but I found that bp_seqconvert or
bp_sreformat are not fast enough to be used efficiently with million of
sequences in fastq format.

You can download an example file here (that I have chosen randomly):

This file will give an error as the sequence name is not duplicated in the
quality header, but I compared with a local file that does not have this
problem, and confirmed that the error is not the slowing factor.
(Unfortunately, I could not find public fastq files in which the file name is
given in both the sequence and quality header, probably because it makes the
file heavier).

Have a nice day,

Charles Plessy
Tsurumi, Kanagawa, Japan

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