Nothing fancy here. Parse the Apache log for /catalog/ to get catalog
sizes though you may need to tweak what you're logging, I'm using the
following, but only %b is needed to get bytes of the request.
http://httpd.apache.org/docs/current/mod/mod_log_config.html
LogFormat "%v %V %{X-Forwarded-For}i %l %u %t \"%r\" %>s %b
\"%{Referer}i\" \"%{User-Agent}i\" %D" combined
CustomLog /var/log/httpd/<%= @vhostname %>-access_log combined
File service metadata requests is parsing for "GET
/$some_env/file_metadata/". BTW in my stats that was 23k req/s if that
wasn't clear.
tx/rx is just from the interface. Nothing else on the box so it's all
Puppet plus general system stats collection, etc.
Ramin
On 7/8/17 8:25 AM, Soham Chakraborty wrote:
Ramin,
I am interested to know how did you do the tests? I want to run a
simulation myself.
On Saturday, July 8, 2017 at 3:44:26 AM UTC+5:30, Ramin K wrote:
On 7/7/17 9:52 AM, Peter Berghold wrote:
> Has anybody out there done any sort of study on what Puppet
produces in
> terms of I/O packet rate? I'm being asked to fill in a
spreadsheet with
> that information....
I can share some rough numbers. We do a lot of files so the numbers are
weird and inefficient. Puppet 3.8.7/Passenger 5.1.5/Ruby 2.0/Apache 2.4
on the server side.
avg file metadata per puppetserver: 25k/s
avg hosts per puppetserver: 1200
avg catalog size: 15MB (lots and lots of files)
Peak TX rate: 4MB/s
Peak RX rate: 1.5MB/s
I'd suspect the average Puppetserver to be a fraction of that bandwidth
for the same number of hosts.
Ramin
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