On 07/28/2017 10:30 AM, Frank Even wrote: >> That's not expected, especially since we keep no state to do the >> load-balancing. Which policy are you using, wrandom or whashed? > > Whatever is default. Is whashed default? Here's my config (minus the > ACLs and setKey), it was simple for testing:
OK, so the default load-balancing policy is leastOutstanding, sending queries to the server with the least outstanding queries, then the lowest order if there is a tie and finally the lowest latency. This policy doesn't use the weight at all, so it explains why your results were not conclusive. Ideally we should implement a weighted consistent hashing policy to deal with use cases such as yours. Willy Tarreau suggested it a few months ago and was kind enough to explain to me how it's done in HAProxy, but I haven't found the time to seriously look into it yet. -- Remi Gacogne PowerDNS.COM BV - https://www.powerdns.com/
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