SQL Azure occasionally so slow that it is unusable

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greetings,

i have been developing drupal based site on azure web role year (http://useum.org). db backend using sql azure.

occasionally (1-2 times per month), sql azure becomes very very slow causes site unusable (home page loads forever). lasts 5-30 minutes each time, , after works again fast usual. last time happened half hour ago (18:30 - 19:00 gmt).

during these downtimes, have connected (remote desktop) instances , work fine, cpu low, robots.txt loads instantly indications not azure web role problem. when pages load (when load), delay simplest query 20-120 seconds (using devel module). windows azure management interface shows working no sign of problem.

first times happened (last year), thought due beta phase of azure. thought technical issue being resolved. thought un-anounced maintenance window, since happened more on weekends.

now think on purpose force me purchase support plan!

has ever had similar experience web role sql azure backend? can something, collect statistics, benchmarks during lagging period isolate problem? there workaround?

thank in advance.

the next time see issue execute following statement towards sql azure database:

select * sys.dm_exec_requests

this show statements being executed towards database. give hint on going on.

there's column in result set called wait_type show sql azure waiting able complete sql query.

nitramafve



Microsoft Azure  >  Azure SQL Database



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