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Historic F5 Account

Mar 04, 2014

Another performance question

All, Another performance question: internal data groups vs. an array within the iRule. It seems that the array would be faster. VERY small data set. I understand management of the data set it...

Employee

Mar 05, 2014

If you're curious about exact performance numbers, you can test it yourself using the timing command:

iRules Optimization 101 - 05 - Evaluating iRule Performance

Array test:

when RULE_INIT {
    array set static::uris {
        foo bar
        test blah
        this that
        ricky lucy
        fred ethel
    }
}
when HTTP_REQUEST timing on {
    log local0. $static::uris([URI::query [HTTP::uri] test])
}

Data group test:

ltm data-group internal test-dg-2 {
    records {
        foo {
            data bar
        }
        fred {
            data ethel
        }
        ricky {
            data lucy
        }
        test {
            data blah
        }
        this {
            data that
        }
    }
    type string
}

when HTTP_REQUEST timing on {
    log local0. [class match -value [URI::query [HTTP::uri] test] equals test-dg-2]
}

Displaying statistics: