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z3APA3A 2019-06-26 16:52:55 +03:00
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doc/html/highload.html
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@ -91,10 +91,11 @@ available options are system dependant.
If 3proxy is used in VPS environment, there can be additional limitations.
For example, kernel resources / system CPU usage / IOCTLs can be limited in a different way, and this can become a bottleneck.
Since 0.9 devel, 3proxy uses splice() by default on Linux, splice() prevents network traffic from being copied from
kernel space to 3proxy process and generally increases throughput, epecially in the case of high volume traffic. But
since some work is moved to kernel, it requires up to 2 times more kernel resources in terms of CPU, memory and IOCTLs.
Use -s0 option to disable splice() usage for given service, if kernel resources are additionally limited and this
limitation is a bottleneck, e.g.
kernel space to 3proxy process and generally increases throughput, epecially in the case of high volume traffic. It especially
true for virtual environment (it can improve thoughput up to 10 times) unless there are additional kernel limitations.
Since some work is moved to kernel, it requires up to 2 times more kernel resources in terms of CPU, memory and IOCTLs.
If your hosting additionally limits kernel resources (you can see it as nearly 100% CPU usage without any real CPU activity for
any application which performs IOCTLS), use -s0 option to disable splice() usage for given service e.g.
<pre>
socks -s0
</pre>