Over a dozen users seem to be reporting a similar general slowness issue on the English Wikipedia: https://en.wikipedia.org/w/index.php?oldid=483631204#is_it_me_or_is_wiki_very_slow.3F.
This needs to be investigated and resolved.
Version: unspecified
Severity: major
The db migrations might be related, but they shouldn't be having an effect
http://en.wikipedia.org/w/api.php?action=query&meta=siteinfo&siprop=dbrepllag&sishowalldb=
http://noc.wikimedia.org/dbtree/
db42 is seemingly currently being migrated, and that is replicating from db1017 which is also not in rotation
Doesn't seem too bad for me on smaller articles, but trying to load Barack Obama is just taking an age. Stopping and pressing again loaded in reasonable time
For the second request:
Served by mw56 in 30.553 secs.
Which is slow, but probably nearer normal standards. Then refreshing the page and it loaded reasonably quickly again
I assume response times of bits, geoiplookup, etc. are already being measured? Is there a way to see if there's been an increase in response time or some other kind of increase in latency?
slimvirgin wrote:
This has been happening for me since March 21. Pages are extremely slow to load, and often don't load completely, so that I have to keep trying to open the same page in multiple tabs, then working in whichever window the page appears first in.
It's especially bad using preview. The end of the page doesn't appear and the attempted edit has to be abandoned. What's also happening a lot is that the page appears to load, but the top is missing (i.e. no "edit", "history" parameters etc). I've currently got a BLP talk archive hanging like that for the last five minutes or so.
(In reply to comment #2)
I assume response times of bits, geoiplookup, etc. are already being measured?
Is there a way to see if there's been an increase in response time or some
other kind of increase in latency?
http://status.wikimedia.org/ does some of it.
(In reply to comment #3)
This has been happening for me since March 21.
Confirmed by http://lists.wikimedia.org/pipermail/wikitech-l/2012-March/059304.html , see graph http://lists.wikimedia.org/pipermail/wikitech-l/attachments/20120324/41311a44/attachment-0001.png
This appears to have been a networking issue causing packet loss and timeouts, which should be resolved. Please reopen and provide details if you can reproduce the issue at this time.