I'm getting reports on
rationalwiki.org of occasional blank
watchlists. The symptoms are that a completely empty page loads
immediately. It's running 1.19.1 in Ubuntu 10.04 with Apache
2.2.14-ubuntu.
Of course, I changed *two* things last night: (a) cut max memory for
PHP from 256MB to 64MB (b) switched off KeepAlive in Apache. (I'm
quite keen to keep both of these, as the server CPU and memory went
*right* down.)
The confusing thing is the Apache logs don't show any "200 0" for
Special:Watchlist, at all. So either it's serving something that
renders as a blank page, or something before Apache, which should be
nothing whatsoever, is showing a blank page. I see a few "200 0" for
other pages. A bit over 1% of all connections give a 408 request
timeout - but the request timeout is 300 seconds, which is quite huge
enough.
I've asked people having the problem to email me with their IP and the
time, so I can go log-grovelling. But has anyone else seen this, and
what caused it?
- d.