ra reading compressed files, faster with cat

Carter Bullard carter at qosient.com
Thu Dec 5 10:44:29 EST 2013

So when we decompress a file, we spawn a new process to do the
decompression, using popen(), and read the decompressed data
as a stream from the socket popen() provides.

I’m sure there are scheduling, blocking and buffering issues
with this method, but it is the easiest for the clients.
The next step for performance is to use the native library

Maybe for the next release ???


On Dec 5, 2013, at 9:14 AM, Jesper Skou Jensen <jesper.skou.jensen at uni-c.dk> wrote:

> Hi guys,
> I've been experimenting a bit with Argus/ra, in regards to improving reading speed.
> I noticed that ra (version appears to be quite a lot slower at reading compressed files than files run through zcat/bzcat/xzcat on the fly, and I'm wondering if I can feed any options to ra to make it faster? Or maybe some code-changes (that I haven't got a clue what might be) could help?
> I have created a small graph here that illustrates the problem: http://oi43.tinypic.com/2ro18cn.jpg
> As you can see ra appears to be slower across the board.
> --
> Regards
> Jesper

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