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Special Forums Hardware Filesystems, Disks and Memory How much is too much? Disk I/O Post 26309 by Perderabo on Wednesday 14th of August 2002 05:07:33 PM
Old 08-14-2002
The disks exist to serve processes. When you get to "too much" you will have processes waiting for disk i/o. To see how close you are that threshold on an HP system, I suggest that you use HP's glance product. If you have a disk bottleneck, it will tell you so. It's an amazing product.
 

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ARRAY_PRODUCT(3)							 1							  ARRAY_PRODUCT(3)

array_product - Calculate the product of values in an array

SYNOPSIS
number array_product (array $array) DESCRIPTION
array_product(3) returns the product of values in an array. PARAMETERS
o $array - The array. RETURN VALUES
Returns the product as an integer or float. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.6 | | | | | | | The product of an empty array is now 1, when | | | before this function would return 0 for an empty | | | array. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 array_product(3) examples <?php $a = array(2, 4, 6, 8); echo "product(a) = " . array_product($a) . " "; echo "product(array()) = " . array_product(array()) . " "; ?> The above example will output: product(a) = 384 product(array()) = 1 PHP Documentation Group ARRAY_PRODUCT(3)
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