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update for highload documentation

z3APA3A 8 лет назад
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29b834cf56
1 измененных файлов с 6 добавлено и 2 удалено
  1. 6 2
      doc/html/highload.html

+ 6 - 2
doc/html/highload.html

@@ -189,8 +189,8 @@ you can eliminate Nagle's algorithm delay with TCP_NODELAY flag. Usage example:
 proxy -osTCP_NODELAY -ocTCP_NODELAY
 proxy -osTCP_NODELAY -ocTCP_NODELAY
 </pre>
 </pre>
 sets TCP_NODELAY for client (oc) and server (os) connections.
 sets TCP_NODELAY for client (oc) and server (os) connections.
-<pre>
-</pre>
+<p>Do not use TCP_NODELAY on slow connections, if connection bandwidth is
+bottleneck, or because it may be more bandwidth-consuming.
 <h4>Use slice to speedup large data amount transfers</h4>
 <h4>Use slice to speedup large data amount transfers</h4>
 slice() allows to copy data between connections without copying to process
 slice() allows to copy data between connections without copying to process
 addres space. It can speedup proxy on high bandwidth connections, if most
 addres space. It can speedup proxy on high bandwidth connections, if most
@@ -203,3 +203,7 @@ devel version. Do not use it in production without testing. Slice requires
 more system buffers, but reduces process memory usage.
 more system buffers, but reduces process memory usage.
 Do not use slice if there is a lot of short-living connections with no bandwidth
 Do not use slice if there is a lot of short-living connections with no bandwidth
 requirements.
 requirements.
+<p>Use slice only on high-speed connections (e.g. 10GBE), where processor or
+bus are bottlenecks.
+<p>TCP_NODELAY and slice are not contrary to each over and can be combined on
+high-speed connections.