Merge of r4384, r4385: Fixes for limit_rate: *) Fixed throughput problems with large limit_rate. Previous attempt to fix this was in r1658 (0.6.18), though that one wasn't enough (it was a noop). *) Fixed interaction of limit_rate and sendfile_max_chunk. It's possible that configured limit_rate will permit more bytes per single operation than sendfile_max_chunk. To protect disk from takeover by a single client it is necessary to apply sendfile_max_chunk as a limit regardless of configured limit_rate. See here for report (in Russian): http://mailman.nginx.org/pipermail/nginx-ru/2010-March/032806.html

# Copyright (C) Igor Sysoev


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