Re: F12: Yum - network disconnects spins it's wheels.

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On 02/25/2010 09:34 PM, Ed Greshko wrote:
> Tony Nelson wrote:
>    
>> On 10-02-25 21:37:58, Ed Greshko wrote:
>>   ...
>>
>>      
>>> I can't conceive of a situation where usage of http or ftp protocol
>>> would interact to "smack" an imap connection.
>>>
>>> To me, based on your observations, I'm getting the feeling you may
>>> have a strange network problem that may be local to you or within
>>> your ISP close to you.  As I said, I'd be dragging out wireshark.
>>>
>>>        
>> It's not FastestMirror, it's the mirror it's choosing to use.  If he
>> figures out which one, he can blacklist it.
>>
>>
>>      
> That is what the case was in my situation although maybe I didn't spell
> it out.  However, I did say that Singapore was causing an issue for me
> and I added the line "exclude=.gov, .sg" to my fastestmirror.conf.
>
> But, when he says that his IMAP connection is *also* being affected then
> I can't conjure a situation where yum would have an impact on IMAP
I can try to find out if it is a mirror problem, but then again, I thought
that mirrors were randomly chosen and if a mirror is not responding
properly or whatever it is, the offending mirror should have been dropped
and another mirror tried.  From past Yum versions, I have seen this to
be the case, and I have not seen any such thing with F12's Yum version
which lead me to question if mirror testing/switching code was
dropped?  I hope I am wrong in my assumptions.

Is it possible that the network is somehow using maximum bandwidth
preventing network access to other apps?  The IMAP network break
seemed to prevent IMAP client connectivity temporarily and once yum
stopped, IMAP client connections quickly resumed.

I have a pretty quiet network and it seems to me, that somehow running
yum with FM causes problems.  Removing FM seems to work but it is
not maxing out the bandwidth.  For example, with FM, it is hitting hard
at around 300-320KB/s but without it, it is hitting around 200-290KB/s
which is notably slower as you watch the downloads.

FWIW,
Dan

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