sf-daq/sf_daq_buffer
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Added comment about ZMQ version

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babic_a
2020-05-20 14:39:49 +02:00
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README.md
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@@ -103,6 +103,21 @@ ln -s "$(pwd)""/""sf_replay" /usr/bin/sf_replay
ln -s "$(pwd)""/""sf_writer" /usr/bin/sf_writer
```
## Warnings
### Zeromq
Zeromq version 4.1.4 (default on RH7) has a LINGER bug. Sometimes, the last
message is not sent (the connection gets dropped before the message is in the buffer).
Since we use PUSH/PULL to modulate the sf_replay speed, this is a key functionality we are using.
Please install a later version:
```bash
cd /etc/yum.repos.d/
wget https://download.opensuse.org/repositories/network:messaging:zeromq:release-stable/RHEL_7/network:messaging:zeromq:release-stable.repo
yum install zeromq-devel
```
## Terminology
In order to unify the way we write code and talk about concept the following