launchpad-dev team mailing list archive

[Stuart Bishop <stuart.bishop@xxxxxxxxxxxxx>]

On Thu, Nov 19, 2009 at 9:54 PM, Francis J. Lacoste
>        So the question for this issue is--what level would you like me to
> address it on? If you'd like me to simply work on the revision graph
> issue, I could do that within the current architecture of loggerhead and
> devise a fix. Probably the simplest would be to just place a mutex
> around building a revision graph for any one branch. However, that may
> not fix the actual *performance* problems seen with codebrowse, it just
> might make hangs less likely. A more general approach to loggerhead's
> scalability would result in a fix for this and also for any performance
> issues that loggerhead sees in the Launchpad environment. A quick search

We could use a mutex or limit the number of simultaneous requests the load balancer sends the backend (or both). Even if building the revision graph is amazingly fast, we still need this as the failure can still occur under sufficient load.

--
Stuart Bishop <stuart@xxxxxxxxxxxxxxxx>
http://www.stuartbishop.net/

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