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>sys_getloadavg</H1
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><P
> (no version information, might be only in CVS)</P
>sys_getloadavg -- Gets system load average</DIV
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><H2
>说明</H2
>array <B
CLASS="methodname"
>sys_getloadavg</B
> ( void )<BR
></BR
><P
> Returns three samples representing the average system load
(the number of processes in the system run queue) over the last 1, 5 and 15
minutes, respectively.
</P
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><H2
>返回值</H2
><P
> Returns an <A
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><B
CLASS="type"
>array</B
></A
> with three samples (last 1, 5 and 15
minutes).
</P
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>范例</H2
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>例 1. A <B
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>sys_getloadavg()</B
> example</B
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><code><font color="#000000">
<font color="#0000BB"><?php<br />$load </font><font color="#007700">= </font><font color="#0000BB">sys_getloadavg</font><font color="#007700">();<br />if (</font><font color="#0000BB">$load</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">] > </font><font color="#0000BB">80</font><font color="#007700">) {<br /> </font><font color="#0000BB">header</font><font color="#007700">(</font><font color="#DD0000">'HTTP/1.1 503 Too busy, try again later'</font><font color="#007700">);<br /> die(</font><font color="#DD0000">'Server too busy. Please try again later.'</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?></font>
</font>
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>注释</H2
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><B
>注意: </B
>本函数未在 Windows 平台下实现。</P
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