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| {{Template:UserStatistics:Rate subtitle}}
| | #REDIRECT [[Rate and RatePerSecond (UserStatistics functions)]] |
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| This function returns the difference in statistic values between one UserStatistics
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| object and another divided by the number of seconds between the time
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| the two UserStatistics objects were instantiated.
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| The Rate method reports the rate of a ''Model 204'' user [[UserStatistics class#login|Login]] (also called “Final”) statistic.
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| The method cancels the request if it is applied to a statistic
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| that is exclusively a [[UserStatistics class#request|Request
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| statistic]].
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| '''RatePerSecond''' is a synonym for <tt>Rate</tt>.
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| ==Syntax==
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| {{Template:UserStatistics:Rate syntax}}
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| ===Syntax terms===
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| <dl>
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| <dt><i>%num</i>
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| <dd>A numeric variable to contain the rate for the specified statistic.
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| <dt><i>%ustat</i>
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| <dd>A UserStatistics object variable.
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| <dt><i>%ustatOld</i>
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| <dd>An older UserStatistics object variable for the same user login
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| as ''%ustat''.
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| <dt><i>statistic</i>
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| <dd>This case-independent string contains the name of a ''Model 204'' user Login statistic.
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| All other names return an UnknownStatistic exception.
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| </dl>
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| ==Usage notes==
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| <ul>
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| <li>The statistics UpdtTime(MS) and LongupdTime(MS) can also be specified
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| without the parentheses: for example,
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| UpdtTimeMs and LongUpdtimeMs, respectively.
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| <li>Request statistics are not valid for the Rate method since most don't
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| really make sense for this operation.
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| The Request statistics for which it does make sense (CPU, for example)
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| have corresponding Login statistics that return the exact same difference.
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| <li>Some Login statistics (like PCPU) don't really make sense as a rate, but
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| the Rate method returns a rate anyway.
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| <li>All rates are rounded to thousandths, except for the CPU statistic.
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| The units for CPU are milliseconds, so
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| CPU rates are rounded to thousandths of a millisecond.
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| <li>To get rates with a divisor other than time, use the [[Difference (UserStatistics function)|Difference]] function.
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| For example:
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| <p class="code">%dkrdPerDkpr = %stat:difference(%statOld, 'DKRD') / -
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| %stat:difference(%statOld, 'DKPR')
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| </p>
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| </ul>
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| ==Examples==
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| The following statement returns the rate for DKRD
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| over the interval from the creation of %ustatOld to the creation of %ustat:
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| <p class="code">%dkrdPerSecond = %stat:difference(%statOld, 'dkrd')
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| </p>
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| ==See also==
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| {{Template:UserStatistics:Rate footer}}
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