Differences

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--- vms:bittorrent [2017/05/30 04:23]
admin [Transmission]
+++ vms:bittorrent [2017/06/02 04:36] (current)
admin [Transmission]
@@ Line 5: / Line 5: @@
 We'll start with the installation of a **Transmission** server, based on a [[vms:debian|Debian template]].
-<Code:bash>
+=== Installation ===
+<Code:json>
 > apt-get install transmission-daemon
 </Code>
@@ Line 25: / Line 27: @@
 "incomplete-dir": "/var/lib/transmission/seeding",
 "dht-enabled": true,
+"lpd-enabled": true,
 "pex-enabled": true,
 "peer-limit-per-torrent": 10,
@@ Line 37: / Line 40: @@
 "watch-dir": "/var/lib/transmission/seeding",
 "watch-dir-enabled": true,
+</Code>
+For a complete description of all options: [[https://web.archive.org/web/20160428165927/https://trac.transmissionbt.com/wiki/EditConfigFiles]]
+For detailed instructions on how to use Transmission: [[https://help.ubuntu.com/community/TransmissionHowTo]]
+=== System Configuration ===
+To avoid Transmission eating up all the system's resources, edit ''/lib/systemd/system/transmission-daemon.service'':
+<Code>
+> nano /lib/systemd/system/transmission-daemon.service
+ADD @ end of [Service] section
+[Service]
+...
+Nice=16
+IOSchedulingClass=idle
+CPUSchedulingPolicy=idle
+MemoryMax=25M
+MemoryHigh=35M
+ProtectSystem=true
+> systemctl daemon-reload
+</Code>
+Note that we reload daemons for our changes to take effect.
+=== UDP socket buffers ===
+Setting ''"message-level": 3,'' in ''/var/lib/transmission-daemon/info/settings.json'', then monitoring ''/var/log/syslog'', or better ''/var/log/daemon.log'' will show:
+<Code>
+Jun  2 04:18:24 transmission-20 transmission-daemon[4243]: [2017-06-02 04:18:24.532 CEST] UDP Failed to set receive buffer: requested 4194304, got 425984 (tr-udp.c:78)
+Jun  2 04:18:24 transmission-20 transmission-daemon[4243]: [2017-06-02 04:18:24.534 CEST] UDP Failed to set send buffer: requested 1048576, got 425984 (tr-udp.c:89)
+</Code>
+It seems Transmission is willing to get a 4MB receive buffer and a 1MB send buffer, while only 256K are available. We'll fix that using the following commands:
+<Code>
+> echo 'net.core.rmem_max = 16777216' >> /etc/sysctl.conf
+> echo 'net.core.wmem_max = 4194304' >> /etc/sysctl.conf
+> sysctl -p
+</Code>
+For production servers with hundreds of connections 16MB receive and 4MB send buffers are recommended [[https://trac.transmissionbt.com/ticket/4321| read more here...]]
+===== mitorrent =====
+[[https://github.com/da2x/mitorrent]]
+First we must follow [[vms:python:dev|this installation guide]] to setup an appropriate python environment, we also need to have 'git' installed, so we can clone the GitHub repo.
+=== Install===
+<Code:bash>
+> apt-get install git-core
+> su py3
+> cd $HOME
+> git clone https://github.com/da2x/mitorrent.git
+> cd mitorrent
+> mkvirtualenv mitorrent
+> chmod +x mitorrent-runner.py
+</Code>
+===Usage===
+<Code>
+> su py3
+> cd $HOME/mitorrent
+> workon mitorrent
+> ./mitorrent-runner.py path/to/original/file > path/to/torrent/file.torrent
 </Code>