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Try to handle multiple connections better. The session database is a hot spot. When multiple requests (e.g. 20) come in at the same time session database contention can get great. The original code didn't retry session database access when the open failed. This resulted in errors at the client. The second pass delayed 0.01 seconds and retried. It was better but we still had multiple second stalls. I think the first request got in, everybody else backed up and then retried at the same time. Again they stepped on each other. With logging I would see many counters go all the way to low single digits or to -1 indicating falure. This pass uses randomint to generate delays from 0-.125 seconds in 5ms increments. This performs better in testing. I rarely saw a counter less than 13 (2 failed retries). Current logging starts after 6 failures and counts down until success or failure.
author John Rouillard <rouilj@ieee.org>
date Thu, 16 Dec 2021 20:02:00 -0500
parents b051559eaae8
children
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<tal:block metal:use-macro="templates/page/macros/icing">
<title metal:fill-slot="head_title" i18n:translate="">Issue searching - <span
 i18n:name="tracker" tal:replace="config/TRACKER_NAME" /></title>
<span metal:fill-slot="body_title" tal:omit-tag="python:1"
 i18n:translate="">Issue searching</span>
<td class="content" metal:fill-slot="content">

<form method="get" name="itemSynopsis"
      tal:attributes="action request/classname">
      
<table class="form" tal:define="
   cols python:request.columns or 'id activity title status assignedto'.split();
   sort_on python:request.sort and request.sort[0] or nothing;
   sort_desc python:sort_on and sort_on[0] == '-';
   sort_on python:(sort_on and sort_on[1]) or 'activity';
   group_on python:request.group and request.group[0] or nothing;
   group_desc python:group_on and group_on[0] == '-';
   group_on python:(group_on and group_on[1]) or 'priority';

   search_input templates/page/macros/search_input;
   search_date templates/page/macros/search_date;
   column_input templates/page/macros/column_input;
   sort_input templates/page/macros/sort_input;
   group_input templates/page/macros/group_input;
   search_select templates/page/macros/search_select;
   search_select_translated templates/page/macros/search_select_translated;
   search_multiselect templates/page/macros/search_multiselect;">

<tr>
 <th class="header">&nbsp;</th>
 <th class="header" i18n:translate="">Filter on</th>
 <th class="header" i18n:translate="">Display</th>
 <th class="header" i18n:translate="">Sort on</th>
 <th class="header" i18n:translate="">Group on</th>
</tr>

<tr tal:define="name string:@search_text">
  <th i18n:translate="">All text*:</th>
  <td metal:use-macro="search_input"></td>
  <td>&nbsp;</td>
  <td>&nbsp;</td>
  <td>&nbsp;</td>
</tr>

<tr tal:define="name string:title">
  <th i18n:translate="">Title:</th>
  <td metal:use-macro="search_input"></td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td>&nbsp;</td>
</tr>

<tr tal:define="name string:id">
  <th i18n:translate="">ID:</th>
  <td metal:use-macro="search_input"></td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td>&nbsp;</td>
</tr>

<tr tal:define="name string:creation">
  <th i18n:translate="">Creation Date:</th>
  <td metal:use-macro="search_date"></td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:creator;
                db_klass string:user;
                db_content string:username;">
  <th i18n:translate="">Creator:</th>
  <td metal:use-macro="search_input">
    <option metal:fill-slot="extra_options" i18n:translate=""
            tal:attributes="value request/user/id">created by me</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:activity">
  <th i18n:translate="">Activity:</th>
  <td metal:use-macro="search_date"></td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td>&nbsp;</td>
</tr>

<tr tal:define="name string:actor;
                db_klass string:user;
                db_content string:username;">
  <th i18n:translate="">Last actor:</th>
  <td metal:use-macro="search_input">
    <option metal:fill-slot="extra_options" i18n:translate=""
            tal:attributes="value request/user/id">done by me</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td>&nbsp;</td>
</tr>

<tr tal:define="name string:nosy">
  <th i18n:translate="">Nosy list member:</th>
  <td metal:use-macro="search_input"></td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td>&nbsp;</td>
</tr>

<tr tal:define="name string:type;
                db_klass string:issue_type;
                db_content string:name;">
  <th i18n:translate="">Type:</th>
  <td metal:use-macro="search_select_translated">
    <option metal:fill-slot="extra_options" value="-1" i18n:translate=""
            tal:attributes="selected python:value == '-1'">not selected</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:components;
                db_klass string:component;
                db_content string:name;">
  <th i18n:translate="">Components:</th>
  <td metal:use-macro="search_select_translated">
    <option metal:fill-slot="extra_options" value="-1" i18n:translate=""
            tal:attributes="selected python:value == '-1'">not selected</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:versions;
                db_klass string:version;
                db_content string:name;">
  <th i18n:translate="">Versions:</th>
  <td metal:use-macro="search_select_translated">
    <option metal:fill-slot="extra_options" value="-1" i18n:translate=""
            tal:attributes="selected python:value == '-1'">not selected</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<!--tr tal:define="name string:severity;
                db_klass string:severity;
                db_content string:name;">
  <th i18n:translate="">Severity:</th>
  <td metal:use-macro="search_select_translated">
    <option metal:fill-slot="extra_options" value="-1" i18n:translate=""
            tal:attributes="selected python:value == '-1'">not selected</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr-->

<tr tal:define="name string:dependencies;
                db_klass string:issue;
                db_content string:id;">
  <th i18n:translate="">Depends on:</th>
  <td metal:use-macro="search_input"/>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:assignee;
                db_klass string:user;
                db_content string:username;">
  <th i18n:translate="">Assigned to:</th>
  <td metal:use-macro="search_input">
    <tal:block metal:fill-slot="extra_options">
      <option tal:attributes="value request/user/id"
       i18n:translate="">assigned to me</option>
      <option value="-1" tal:attributes="selected python:value == '-1'"
       i18n:translate="">unassigned</option>
    </tal:block>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:keywords;
                db_klass string:keyword;
                db_content string:name;">
  <th i18n:translate="">Keyword:</th>
  <td metal:use-macro="search_select_translated">
    <option metal:fill-slot="extra_options" value="-1" i18n:translate=""
            tal:attributes="selected python:value == '-1'">not set</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:priority;
                db_klass string:priority;
                db_content string:name;">
  <th i18n:translate="">Priority:</th>
  <td metal:use-macro="search_select_translated">
    <option metal:fill-slot="extra_options" value="-1" i18n:translate=""
            tal:attributes="selected python:value == '-1'">not selected</option>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:status;
                db_klass string:status;
                db_content string:name;">
  <th i18n:translate="">Status:</th>
  <td metal:use-macro="search_select_translated">
    <tal:block metal:fill-slot="extra_options">
      <option value="-1,1,2" i18n:translate=""
              tal:attributes="selected python:value == '-1,1,2'">not closed</option>
      <option value="-1" i18n:translate=""
              tal:attributes="selected python:value == '-1'">not selected</option>
    </tal:block>
  </td>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr tal:define="name string:resolution;
                db_klass string:resolution;
                db_content string:name;">
  <th i18n:translate="">Resolution:</th>
  <td metal:use-macro="search_select_translated"/>
  <td metal:use-macro="column_input"></td>
  <td metal:use-macro="sort_input"></td>
  <td metal:use-macro="group_input"></td>
</tr>

<tr>
 <th i18n:translate="">No Sort or group:</th>
 <td>&nbsp;</td>
 <td>&nbsp;</td>
 <td><input type="radio" name="@sort" value=""/></td>
 <td><input type="radio" name="@group" value=""/></td>
</tr>

<tr>
<th i18n:translate="">Pagesize:</th>
<td><input name="@pagesize" size="3" value="50"
           tal:attributes="value request/form/@pagesize/value | default"/></td>
</tr>

<tr>
<th i18n:translate="">Start With:</th>
<td><input name="@startwith" size="3" value="0"
           tal:attributes="value request/form/@startwith/value | default"/></td>
</tr>

<tr>
<th i18n:translate="">Sort Descending:</th>
<td><input type="checkbox" name="@sortdir"
           tal:attributes="checked sort_desc"/>
</td>
</tr>

<tr>
<th i18n:translate="">Group Descending:</th>
<td><input type="checkbox" name="@groupdir"
           tal:attributes="checked group_desc"/>
</td>
</tr>

<tr tal:condition="python:request.user.hasPermission('Edit', 'query')">
 <th i18n:translate="">Query name**:</th>
 <td tal:define="value request/form/@queryname/value | nothing">
  <input name="@queryname" tal:attributes="value value"/>
  <input type="hidden" name="@old-queryname" tal:attributes="value value"/>
  <input type="hidden" name="@template" value="index|search"/>
 </td>
</tr>

<tr>
  <td>
   &nbsp;
   <input type="hidden" name="@action" value="search"/>
  </td>
  <td><input type="submit" value="Search" i18n:attributes="value"/></td>
</tr>

<tr><td>&nbsp;</td>
 <td colspan="4" class="help">
  <span i18n:translate="" tal:omit-tag="true">
   *: The "all text" field will look in message bodies and issue titles
  </span><br>
  <span tal:condition="python:request.user.hasPermission('Edit', 'query')"
   i18n:translate="" tal:omit-tag="true"
  >
   **: If you supply a name, the query will be saved off and available as a
       link in the sidebar
  </span>
 </td>
</tr>
</table>

</form>
</td>

</tal:block>
Roundup Issue Tracker: http://roundup-tracker.org/