On May 30, 2008, at 9:10 AM, Jess Holle wrote:
Jim Jagielski wrote:I've not experimented with it, but the session-based load balancing in the latest mod_jk's looks attractive.On May 29, 2008, at 5:38 PM, andrzej wrote:Hi,module mod_proxy_balancer can make decision basing on volume of traffic or number of requests. How, for example, this volume is counted? Is it counted from the time server starts (hope not) or maybe it is counted in 10 minutes period (after 10 minutes values read and transfered are reset and counted from zero)? Where/how can I change this time?It is counted after each request... that each, the counters are updated with info after each request. They are not "reset" or "aged" for a number of reasons: 1. The overhead associated with it. Esp something like what is done in mod_jk... 2. Validity: LBs try to maintain an overall average. If you occasionally "reset" then you lose knowledge of the past and so you are only averaging over smaller time-periods... It's like the difference in tracking stocks short-term rather than long-term. LB is a long term action. The only reason I can see for some kind of "reset" is to avoid overflow, but even then you don't want to "reset" to 0 but rather do a uniform normalization. Why is the current behavior bad and why do you want to change it?
I plan on, once 2.2.9 is out, adding my bytime algo before looking at whether bybusyness and/or bysession is viable for httpd. ;) --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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