On Feb 24, 2009, at 1:45 AM, Erik Romijn wrote:
Hi,
He Yan wrote:
Toward
this end, we have BGP data available in an XML format rather than
MRT.
Compared with MRT, XML is more extensible, human and machine-readable
and can serve as a common interface for a variety of tools.
This looks interesting. A quick question: what is the amount of on-
disk
data that you collect with this?
With RIS, we now collect 22GB of gzipped MRT per month, for ~110 full
peers. So every full peer gets us about 200MB of gzipped data per
month.
Are these figures higher with your XML-based format (with
compression -
I imagine the XML compresses better than MRT) ?
Thanks for your comments.
Based on our experiment's result, XML is 1.03 times larger then MRT
by using the default compression parameters for bzip2.
If you now collect 22GB compressed MRT data per month, with XML you
need to collect about 22*1.03 = 22.66GB XML compressed data per month.
He Yan
I know that disk space is considered cheap, but we still have
limitations in this.
cheers,
Erik Romijn
RIPE NCC RIS
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