A little more info, version 5 doesn't support the new config format, and it doesn't support JSON logging. Depending on what you are doing, you may trip yourself up over these sorts of things.

but Radu is correct, they are perfectly compatible, especially where you have the newer version recieving the logs (the other way around, you may accidently send something that the older version will just treat as text, not parsing it as you would expect)

David Lang


On Tue, 23 Apr 2013, Radu Gheorghe wrote:

Hello,

The syslog protocol is the same, so performance shouldn't have anything to
do with compatibility.

Version 7 has quite a lot of performance improvements over version 5
(especially on the disk queues front, if I remember correctly). So you
might get better performance if you have version 7 everywhere, but:
- you won't notice the difference unless you generate a huge amount of logs
- it shouldn't have anything to do with compatibility

Best regards,
Radu


2013/4/23 Mayur Patil <[email protected]>

Hello,

   I have setup server with version 7.2.6 and clients with 5.8.10

   Would it make any considerable performance loss??

  Seeking for guidance,

  Thanks !!
--
*Cheers,
Mayur*.
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