[axel-users] How to set retry times and buffer size of axel

[Philipp Hagemeister]

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Hi Kevin,

sorry for answering that late. Giridhar seems to have overlooked this
thread (maybe he doesn't read -users) and I'm currently busy and will
probably not have much time available for axel until April 2009. (So v3
will be delayed, and I think I'm gonna scratch the current
ultra-threaded approach because it just becomes too complex).

> 1.       How can I set the retry times of axel, I don’t see this
option in the axelrc.

If it is neither reconnect_delay nor connection_timeout, what are you
looking for?

> 2.       How big is proper for the buffer size when the download speed is
> about 40MB/s, because sometimes I got core dumped using axel, I consider
> maybe the buffer set is too small.

In theory, that depends on the the latency, latency distribution and
configuration of your network. However, I think it is mostly irrelevant
in axel. Maximum performance should be achieved with a little bit bigger
than your MTU (1500 on Ethernet) or a multiple of it. Anyway, axel
should never crash no matter what this value is. It would be nice if you
could provide detailled information about these crashes and/or whether
they occur with a particulary large(say, 100000) or small(500) buffer size.

Regards,

Philipp

Kevin Chen wrote:
> Hi everyone, 
> 
>  
> 
> Recently I’m using axel to download some files(about 1GB each) within the
> internal network of our company, as a need of a project I’m working at. And
> I have come up with some problems, which are:
> 
>  
> 
> 1.       How can I set the retry times of axel, I don’t see this option in
> the axelrc.
> 
> 2.       How big is proper for the buffer size when the download speed is
> about 40MB/s, because sometimes I got core dumped using axel, I consider
> maybe the buffer set is too small.
> 
>  
> 
>  
> 
> Thx
> 
>  
> 
> K.C
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
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> axel-users mailing list
> axel-users at lists.alioth.debian.org
> http://lists.alioth.debian.org/mailman/listinfo/axel-users


- --
Philipp Hagemeister

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