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Avoid divide by zero error with key_buffer_size

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Fixes #35.
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Major Hayden 2014-02-21 11:04:38 -06:00
parent ce9dd1dac2
commit 47e3dd2350
1 changed files with 3 additions and 1 deletions
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4
mysqltuner.pl
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@ -605,8 +605,10 @@ sub calculations {
$mycalc{'pct_connections_used'} = ($mycalc{'pct_connections_used'} > 100) ? 100 : $mycalc{'pct_connections_used'} ;
# Key buffers
if (mysql_version_ge(4, 1)) {
if (mysql_version_ge(4, 1) && $myvar{'key_buffer_size'} > 0) {
$mycalc{'pct_key_buffer_used'} = sprintf("%.1f",(1 - (($mystat{'Key_blocks_unused'} * $myvar{'key_cache_block_size'}) / $myvar{'key_buffer_size'})) * 100);
} else {
$mycalc{'pct_key_buffer_used'} = 0;
}
if ($mystat{'Key_read_requests'} > 0) {
$mycalc{'pct_keys_from_mem'} = sprintf("%.1f",(100 - (($mystat{'Key_reads'} / $mystat{'Key_read_requests'}) * 100)));