update transformation

    <p>If some workers are disabled, the others will

    still be scheduled correctly.</p>

    <div class="example"><pre>

for each worker in workers

    <div class="example"><pre><code>for each worker in workers

    worker lbstatus += worker lbfactor

    total factor    += worker lbfactor

    if worker lbstatus > candidate lbstatus

        candidate = worker

candidate lbstatus -= total factor

candidate lbstatus -= total factor</code></pre></div>

    </pre></div>

    <p>If a balancer is configured as follows:</p>

    <pre><code>

    worker     a    b    c    d

    lbfactor  25   25   25   25

    lbstatus   0    0    0    0

    </code></pre>

    <table><tr><th>worker</th>

        <th class="data">a</th>

        <th class="data">b</th>

        <th class="data">c</th>

        <th class="data">d</th></tr>

<tr><th>lbfactor</th>

        <td class="data">25</td>

        <td class="data">25</td>

        <td class="data">25</td>

        <td class="data">25</td></tr>

<tr><th>lbstatus</th>

        <td class="data">0</td>

        <td class="data">0</td>

        <td class="data">0</td>

        <td class="data">0</td></tr>

</table>

    <p>And <var>b</var> gets disabled, the following schedule is produced:</p>

    <pre><code>

    lbstatus <strong>-50</strong>    0   25   25

    lbstatus -25    0  <strong>-25</strong>   50

    lbstatus   0    0    0    <strong>0</strong>

    (repeat)

    </code></pre>

    <p>That is it schedules: a c d a c d a c d ...</p>

    <table><tr><th>worker</th>

        <th class="data">a</th>

        <th class="data">b</th>

        <th class="data">c</th>

        <th class="data">d</th></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>-50</em></td>

        <td class="data">0</td>

        <td class="data">25</td>

        <td class="data">25</td></tr>

<tr><th>lbstatus</th>

        <td class="data">-25</td>

        <td class="data">0</td>

        <td class="data"><em>-25</em></td>

        <td class="data">50</td></tr>

<tr><th>lbstatus</th>

        <td class="data">0</td>

        <td class="data">0</td>

        <td class="data">0</td>

        <td class="data"><em>0</em></td></tr>

<tr><td class="data" colspan="5">(repeat)</td></tr>

</table>

    <p>That is it schedules: <var>a</var> <var>c</var> <var>d</var>

    <var>a</var> <var>c</var> <var>d</var> <var>a</var> <var>c</var>

    <var>d</var> ...</p>

    <p>The following asymmetric configuration works as one would expect:</p>

    <pre><code>

    worker     a    b

    lbfactor  70   30

    lbstatus <strong>-30</strong>   30

    lbstatus  40  <strong>-40</strong>

    lbstatus  <strong>10</strong>  -10

    lbstatus <strong>-20</strong>   20

    lbstatus <strong>-50</strong>   50

    lbstatus  20  <strong>-20</strong>

    lbstatus <strong>-10</strong>   10

    lbstatus <strong>-40</strong>   40

    lbstatus  30  <strong>-30</strong>

    lbasatus   <strong>0</strong>    0

    (repeat)

    </code></pre>

    <table><tr><th>worker</th>

        <th class="data">a</th>

        <th class="data">b</th></tr>

<tr><th>lbfactor</th>

        <td class="data">70</td>

        <td class="data">30</td></tr>

<tr><td class="data" colspan="2">&nbsp;</td></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>-30</em></td>

        <td class="data">30</td></tr>

<tr><th>lbstatus</th>

        <td class="data">40</td>

        <td class="data"><em>-40</em></td></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>10</em></td>

        <td class="data">-10</td></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>-20</em></td>

        <td class="data">20</td></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>-50</em></td>

        <td class="data">50</td></tr>

<tr><th>lbstatus</th>

        <td class="data">20</td>

        <td class="data"><em>-20</em></td></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>-10</em></td>

        <td class="data">10</td></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>-40</em></td>

        <td class="data">40</td></tr>

<tr><th>lbstatus</th>

        <td class="data">30</td>

        <td class="data"><em>-30</em></td></tr>

<tr><th>lbstatus</th>

        <td class="data"><em>0</em></td>

        <td class="data">0</td></tr>

<tr><td class="data" colspan="3">(repeat)</td></tr>

</table>

    <p>That is after 10 schedules, the schedule repeats and 7 <var>a</var>

    are selected with 3 <var>b</var> interspersed.</p>

<?xml version="1.0" encoding="iso-2022-jp"?>

<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">

<?xml-stylesheet type="text/xsl" href="../style/manual.ja.xsl"?>

<!-- English Revision: 105989 (outdated: 106723) -->

<!-- English Revision: 105989 (outdated: 106758) -->

<!--

 Copyright 2002-2004 The Apache Software Foundation