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0eae6323bf
In dns_send_query(), there's no point in first waking up the FD, to get called back by the poller to send the request and sleep. Instead let's simply send the request as soon as it's known and only subscribe to the poller when the socket buffers are full and it's required to poll (i.e. almost never). This significantly reduces the number of calls to the poller. A large config sees the number of epoll_ctl() calls reduced from 577 to 7 over 10 seconds, the number of recvfrom() from 1533 to 582 and the number of sendto() from 369 to 162. It also has the extra benefit of building each requests only once per resolution and sending it to multiple resolvers instead of rebuilding it for each and every resolver. This will reduce the risk of seeing situations similar to bug #416 in the future. |
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| .github/ISSUE_TEMPLATE | ||
| contrib | ||
| doc | ||
| ebtree | ||
| examples | ||
| include | ||
| reg-tests | ||
| scripts | ||
| src | ||
| tests | ||
| .cirrus.yml | ||
| .gitignore | ||
| .travis.yml | ||
| BRANCHES | ||
| CHANGELOG | ||
| CONTRIBUTING | ||
| INSTALL | ||
| LICENSE | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| ROADMAP | ||
| SUBVERS | ||
| VERDATE | ||
| VERSION | ||
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - BRANCHES to understand the project's life cycle and what version to use - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)