William Allen Simpson wrote:
> Anyway, I'm happy to help make Wikipedia somewhat more secure.  Here's
> a ganglia CPU picture that might explain a little of the problem.  I'm
> trying to edit off-peak hours, but those peaks are devastating!

Attachments are stripped automatically from this list, so can't see your 
graph, but here's a link to the Ganglia monitoring page for the server 
that does the HTTPS proxying for secure.wikimedia.org:

http://ganglia.wikimedia.org/pmtpa/?r=week&c=Miscellaneous&h=bart.wikimedia.org

Note that its CPU load is consistently pretty low.


The secure.wikimedia.org proxy hits the *exact* same backend web servers 
as everybody else, so editing activity shouldn't be particularly slower 
unless there's something actually preventing the proxy from reaching the 
backend that doesn't prevent everybody else going through the non-HTTP 
proxies from getting there.

Personally I haven't noticed any unusual performance browsing and 
editing through secure.wikimedia.org the last couple weeks versus 
behavior on the non-SSL view.


One thing I will note is that when editing through secure, or when 
having certain non-default preferences, editing will require at least 
two backend renders of the page: once with default options to save link 
data and save default view to the parser cache, then a second time for 
your options when you reload.

If you have all default options, then saving edits to particularly large 
or template-complicated pages may indeed be slower through 
secure.wikimedia.org than not. If you have changed options which affect 
rendering, then it should be about the same either way. (Except for the 
inherent extra slowness making the SSL connections.)

-- brion

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