mirror of
https://github.com/tahoe-lafs/tahoe-lafs.git
synced 2024-12-27 00:21:07 +00:00
59a77f82d7
- Renamed xhtml Title from "Allmydata - Tahoe" to "Tahoe-LAFS" - Renamed Tahoe to Tahoe-LAFS in page content - Changed Tahoe-LAFS home page link to http://tahoe-lafs.org (added target="blank") - Deleted commented css script in info.xhtml
64 lines
2.0 KiB
HTML
64 lines
2.0 KiB
HTML
<html xmlns:n="http://nevow.com/ns/nevow/0.1">
|
|
<head>
|
|
<title>Tahoe-LAFS - Reliability Tool</title>
|
|
<link href="/tahoe_css" rel="stylesheet" type="text/css"/>
|
|
<link href="/webform_css" rel="stylesheet" type="text/css"/>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
</head>
|
|
<body>
|
|
|
|
<h1>Tahoe-LAFS Reliability Tool</h1>
|
|
|
|
<p>Given certain assumptions, this page calculates probability of share loss
|
|
over time, to help make informed decisions about how much redundancy and
|
|
repair bandwidth to configure on a Tahoe-LAFS grid.</p>
|
|
|
|
<div n:render="forms" />
|
|
|
|
<h2>Simulation Results</h2>
|
|
|
|
<p>At the end of the report span (elapsed time <span n:render="report_span"
|
|
/>), the simulated file had the following properties:</p>
|
|
|
|
<ul>
|
|
<li>Probability of loss (no maintenance):
|
|
<span n:render="P_loss_unmaintained"/></li>
|
|
<li>Probability of loss (with maintenance):
|
|
<span n:render="P_loss_maintained"/></li>
|
|
<li>Average repair frequency:
|
|
once every <span n:render="P_repair_rate"/> secs</li>
|
|
<li>Average shares generated per repair:
|
|
<span n:render="P_repair_shares"/></li>
|
|
</ul>
|
|
|
|
<p>This table shows how the following properties change over time:</p>
|
|
<ul>
|
|
<li>P_repair: the chance that a repair was performed in the most recent
|
|
check period.</li>
|
|
<li>P_dead (unmaintained): the chance that the file will be unrecoverable
|
|
without periodic check+repair</li>
|
|
<li>P_dead (maintained): the chance that the file will be unrecoverable even
|
|
with periodic check+repair</li>
|
|
</ul>
|
|
|
|
<div>
|
|
<table n:render="sequence" n:data="simulation_table">
|
|
<tr n:pattern="header">
|
|
<td>t</td>
|
|
<td>P_repair</td>
|
|
<td>P_dead (unmaintained)</td>
|
|
<td>P_dead (maintained)</td>
|
|
</tr>
|
|
<tr n:pattern="item" n:render="simulation_row">
|
|
<td><n:slot name="t"/></td>
|
|
<td><n:slot name="P_repair"/></td>
|
|
<td><n:slot name="P_dead_unmaintained"/></td>
|
|
<td><n:slot name="P_dead_maintained"/></td>
|
|
</tr>
|
|
<tr n:pattern="empty"><td>no simulation data!</td></tr>
|
|
</table>
|
|
</div>
|
|
|
|
</body>
|
|
</html>
|