Hello list, We're having problems with the -P1 version, some time after starting the server (could be minutes or hours), the tcp request handler seems to get stuck, and all (or almost all) new requests get stuck in the SYN_RECV tcp stat. We haven't found out what exactly triggers this yet, could be load, could be specific types of queries.
This seems to be the same problem as described in the following post by Jason Bratton: http://marc.info/?l=bind-users&m=121628960603391&w=2 The main difference should be that we're running the version of bind that comes with Ubuntu 8.0.4 LTS x86_64, and the problems happen when upgrading from version bind9_9.4.2-10 to bind9_9.4.2-10ubuntu0.1, a diff between these two shows the exact same -P1 patch as in the upstream version. Our tcp related settings: transfers-out 100; transfers-per-ns 100; tcp-clients 5000; recursive-clients 10000 Is anyone else seeing this? Is this really a bind bug? And if yes, is there a workaround? Regards, Thomas
