diff --git a/doc/html/highload.html b/doc/html/highload.html index 01f4160..912c571 100644 --- a/doc/html/highload.html +++ b/doc/html/highload.html @@ -49,28 +49,87 @@ expecation.

Extending system limitation

Check manuals / documentation for your system limitations. You may need to change sysctls or even rebuild the kernel from source. -To help with system-dependant settings, 3proxy supports different socket options -which can be set via -ol option for listening socket, -oc for proxy-to-client +To help with system-dependant settings, since 0.9-devel 3proxy supports different +socket options which can be set via -ol option for listening socket, -oc for proxy-to-client socket and -os for proxy-to-server socket. Example: 
 proxy -olSO_REUSEADDR,SO_REUSEPORT -ocTCP_TIMESTAMPS,TCP_NODELAY -osTCP_NODELAY
available options are system dependant.

Extending ephemeral port range

-Check ephemeral port range for your system and extend it to reuired number of ports. -Ephimeral range is always limited to maximum number of ports (64K). To extend -outgoing connections above this limis, extending ephemeral port range is not enough, -you need additional actions: +Check ephemeral port range for your system and extend it to the number of the +ports required. +Ephimeral range is always limited to maximum number of ports (64K). To extend the +number of outgoing connections above this limit, extending ephemeral port range +is not enough, you need additional actions:
  1. Configure multiple outgoing IPs
  2. Make sure 3proxy is configured to use different outgoing IP by either using -multiple services with different external interfaces or via "parent extip" rotation. +multiple services with different external interfaces +
    +allow user1,user11,user111
+proxy -p1001 -e1.1.1.1
+flush
+allow user2,user22,user222
+proxy -p1001 -e1.1.1.2
+flush
+allow user3,user33,user333
+proxy -p1001 -e1.1.1.3
+flush
+allow user4,user44,user444
+proxy -p1001 -e1.1.1.4
+flush
+
    +or via "parent extip" rotation, +e.g. +
    +allow user1,user11,user111
+parent 1000 extip 1.1.1.1 0
+allow user2,user22,user222
+parent 1000 extip 1.1.1.2 0
+allow user3,user33,user333
+parent 1000 extip 1.1.1.3 0
+allow user4,user44,user444
+parent 1000 extip 1.1.1.4 0
+proxy
+
    +or +
    +allow *
+parent 250 extip 1.1.1.1 0
+parent 250 extip 1.1.1.2 0
+parent 250 extip 1.1.1.3 0
+parent 250 extip 1.1.1.4 0
+socks
+
    +
    +
    +Under latest Linux version you can also start multiple services with different +external addresses on the single port with SO_REUSEPORT on listening socket to +evenly distribute incoming connections between outgoing interfaces: +
    +socks -olSO_REUSEPORT -p3128 -e 1.1.1.1
+socks -olSO_REUSEPORT -p3128 -e 1.1.1.2
+socks -olSO_REUSEPORT -p3128 -e 1.1.1.3
+socks -olSO_REUSEPORT -p3128 -e 1.1.1.4
+
    +for Web browsing last two examples are not recommended, because same client can get +different external address for different requests, you should choose external +interface with user-based rules instead.
  3. You may need additional system dependant actions to use same port on different IPs, usually by adding SO_REUSEADDR socket option to external socket. This option can be set (since 0.9 devel) with -osSO_REUSEADDR option: 
     proxy -p3128 -e1.2.3.4 -osSO_REUSEADDR
    +Behavior for SO_REUSEADDR and SO_REUSEPOR is different between different system, +even between different kernel versions and can lead to unexpected results. +Specifics is described here. +Use this options only if actually required and if you fully understand possible +consiquences. E.g. SO_REUSEPORT can help to establish more connections than the +number of the client port available, but it can also lead to situation connections +are randomely fail due to ip+port pairs collision if remote or local system +doesn't support this trick.

Setting stacksize

'stacksize' is a size added to all stack allocations and can be both positive and