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From "David Dabbs" <dmda...@gmail.com>
Subject RE: BIO performance issues
Date Tue, 03 May 2011 21:05:15 GMT


> -----Original Message-----
> From: Mark Thomas [mailto:markt@apache.org]
> Sent: Tuesday, May 03, 2011 3:02 PM
> To: Tomcat Developers List
> Subject: BIO performance issues
> 
> All,
> 
> Summary
> -------
> While trying to align the documentation for maxConnections with the
> actual implementation a couple of performance issue have been
> identified
> with the BIO connector. All bar one of these have been fixed. A fix
> needs to be agreed for the remaining issue, ideally before the next
> 7.0.x release.
> 

. . .snip . . .

> 
> At time 11s:
> - 4s delay processing G first requests
> - 3s delay processing H first requests
> - 2s delay processing I first requests
> - 1s delay processing J first requests
> 
> The delays are particularly bad for new connections which must wait
> behind all the other requests in the queue.
> 
> 

The AJP connector isn't mentioned in your write-up (many thanks), but I just
want to confirm that this issue doesn't happen when using AJP, native or
non-native.


Thanks,

David





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