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jhanington_1353's avatar
jhanington_1353
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Apr 10, 2014
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HSL iRule performance question.

Hello. I am looking into creating a High Speed Logging iRule to send syslogs of our main web app to our centralized syslog server (Logstash + Elasticsearch + Graylog2). I am already running the iRule...
application delivery
devops
iRules
LTM
performance
  • James_Thomson_1's avatar
    James_Thomson_1
    May 08, 2014

    You can do a search on iRule timing if you really wanted to see how many clock cycles it is using, but in general, the HSL is very performant.

     

    I would need more details on what you mean by "substantially more traffic". I've seen HSL send 50,000 messages per second per cpu core that a platform had and use an extra 5-10% cpu.

     

    Main questions. How cpu busy is your box now? What model device do you have? How much traffic is making your box that busy today?

     

James_Thomson_1's avatar
James_Thomson_1
Historic F5 Account

You can do a search on iRule timing if you really wanted to see how many clock cycles it is using, but in general, the HSL is very performant.

 

I would need more details on what you mean by "substantially more traffic". I've seen HSL send 50,000 messages per second per cpu core that a platform had and use an extra 5-10% cpu.

 

Main questions. How cpu busy is your box now? What model device do you have? How much traffic is making your box that busy today?

 

James_Thomson_1's avatar
James_Thomson_1
Historic F5 Account
May 16, 2014
I would agree, that is not a lot. Anecdotally, I would not be worried about the overhead of HSL with that type of traffic.