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view website/issues/html/user.register.html @ 6565:2c2dbfc332ba
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 | 370cc9052239 |
| children |
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<tal:block metal:use-macro="templates/page/macros/icing"> <title metal:fill-slot="head_title" i18n:translate="">Registering with <span i18n:name="tracker" tal:replace="db/config/TRACKER_NAME" /></title> <span metal:fill-slot="body_title" tal:omit-tag="python:1" i18n:translate="">Registering with <span i18n:name="tracker" tal:replace="db/config/TRACKER_NAME" /></span> <td class="content" metal:fill-slot="content"> <p><span style="color:red; font-size:large;">NOTE</span>: If you have previously created or modified issue reports using the sourceforge issue tracker previously used for python bugs, your username on sourceforge already exists in this tracker. Use the <a href="user?@template=forgotten">Password recovery form</a> to get a password for your account.</p> <form method="POST" onSubmit="return submit_once()" enctype="multipart/form-data" tal:attributes="action context/designator"> <input type="hidden" name="opaque" tal:attributes="value python: utils.timestamp()" /> <table class="form"> <tr> <th i18n:translate="">Name</th> <td tal:content="structure context/realname/field">realname</td> </tr> <tr> <th class="required" i18n:translate="">Login Name</th> <td tal:content="structure context/username/field">username</td> </tr> <tr> <th class="required" i18n:translate="">Login Password</th> <td tal:content="structure context/password/field">password</td> </tr> <tr> <th class="required" i18n:translate="">Confirm Password</th> <td tal:content="structure context/password/confirm">password</td> </tr> <tr tal:condition="python:request.user.hasPermission('Web Roles')"> <th i18n:translate="">Roles</th> <td tal:condition="exists:item" tal:content="structure context/roles/field">roles</td> <td tal:condition="not:exists:item"> <input name="roles" tal:attributes="value db/config/NEW_WEB_USER_ROLES"> </td> </tr> <tr tal:condition="python:False"> <th i18n:translate="">Organisation</th> <td tal:content="structure context/organisation/field">organisation</td> </tr> <tr> <th class="required" i18n:translate="">E-mail address</th> <td tal:content="structure context/address/field">address</td> </tr> <tr> <th i18n:translate="">Alternate E-mail addresses<br>One address per line</th> <td tal:content="structure context/alternate_addresses/multiline">alternate_addresses</td> </tr> <tr> <td> </td> <td> <input type="hidden" name="@template" value="register"> <input type="hidden" name="@required" value="username,password,address"> <input type="hidden" name="@action" value="register"> <input type="submit" name="submit" value="Register" i18n:attributes="value"> <input name="@csrf" type="hidden" tal:attributes="value python:utils.anti_csrf_nonce()"> </td> </tr> </table> </form> <tal:block tal:condition="not:context/id" i18n:translate=""> <table class="form"> <tr> <td>Note: </td> <th class="required">highlighted</th> <td> fields are required.</td> </tr> </table> </tal:block> </td> </tal:block>