[PC-BSD Testing] upgrading.. slower than needs be

Kris Moore kris at pcbsd.org
Mon Dec 5 08:02:00 PST 2011


On 12/01/2011 21:06, Julian Elischer wrote:
> On 12/1/11 5:03 PM, Julian Elischer wrote:
>> Watching the RC1->RC2 upgrade on my nice shiny new 15Mb/sec internet
>> link, I now see that teh upgrade process does one file at a time.
>> it would be a lot faster to overlap the downloads if it were
>> possible. Does the upgrade process know of more than one file that it
>> needs to get?
>
> One could at least make the fetch of the checksum file be done in
> parallel, so that the tcp handshake is done during the transfer of the
> main file.
> Looking at my system upgrading however it looks as though there is
> something else that should be found too.
> It's 95 % idle, yet it is only asking for each file, one at a time
> with large gaps between them.(10 seconds)?
> Disk I doesn't seem to be  a bottleneck either so I can't work out
> what the holdup is.

I'll see what we can do to speed this up :) Parallel downloads would
help for sure, if anything we can do the md5 at the same time.

-- 
Kris Moore
PC-BSD Software
iXsystems



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