I recently upgraded my wikis from 1.24.2 to 1.26.2 and I'm trying to
diagnose why my Varnish hit ratios (4 web servers) dropped from ~85% to
~37%. Nothing in my Varnish configuration or VCL changed. For what it's
worth, I allocate 4 GB to Varnish. I'm fairly sure it has to do with
image/thumbnail caching, since there's about 30 GB worth of thumbnails
across all five wikis, though 12 GB of that is for our biggest and most
heavily trafficked wiki. (FWIW, I did change vcl_recv() last year to strip
cookies from thumbnail images and that improved overall performance while
maintaining a high hit ratio.) The Varnish n_lru_nuked stat is growing
rapidly as well, so it's definitely using all of the memory and having to
make room for new stuff.
Any thoughts on what might be causing this degradation, or at least how to
diagnose it?
Dear Teammates,
The MediaWiki 1.26.x wiki loads extensions this way:
wfLoadExtension( 'Cite' );
wfLoadExtension( 'ImageMap' );
wfLoadExtension( 'ParserFunctions' );
Is that supposed to be how to load all extensions nowadays ?
Or will some of them still be loaded thisaway with require_once ?
require_once "$IP/extensions/VisualEditor/VisualEditor.php";
I'm confused, please help.
Lori
GMail is being flaky as hell about accepting or not accepting email
from the RW server, 173.255.233.133 - sometimes works, sometimes hits
spam, sometimes gets 550 refused (with no particular reason given).
Google doesn't do customer service, of course.
We don't *seem* to be in the email blackhole lists (I see our IP
173.255.233.133 gets 6 DNSBL hits in
http://www.kloth.net/services/dnsbl.php but I go to the sites in
question and they say it's not listed); so the only other hypothesis
that springs to mind is that they don't like email coming from J.
Random Linode VM (and at least one DNSBL does consider that a reason).
Has SPF/DMARC helped anyone with this sort of thing?
What does one do in this case? Is there e.g. a commercial third-party
email relay service that, say, GMail users will get mail from?
- d.