持续时间对于摘要任务不准确。 [英] Duration not accurate for summary tasks.

问题描述

这让我疯了。  我无法完成汇总任务以准确汇总其下的任务。  我注意到的一件事是摘要任务总是有"任务类型：固定持续时间"。  我无法在摘要任务中更改此内容，因为
它显示为灰色。  我有"固定单位"被选为项目的默认值。  其他信息，任务都处于自动计划模式。  我完全失去了。

任务名称	工作	持续时间
环境1（DCS SPS 2010开发）	22小时	35.67小时？
   MB SPS 2010生产中的备份内容数据库	1 hr	0.13天？
将备份迁移到DCS开发	2小时	2小时？
将内容数据库还原为环境1	1 hr	0.13天？
提供新的Web应用程序	1 hr	0.13天？
部署自定义	4小时	0.33天？
部署第三方功能	2小时	0.13天？
将内容数据库附加到Web应用程序	1 hr	0.13天？
手动配置场服务	4小时	4小时
查看升级日志	2小时	0.25天？
验证网站&修复问题	4小时	0.5天？

谢谢，

彼得

解决方案

< BLOCKQUOTE>

>>我注意到的一件事是摘要任务总是具有"任务类型：固定持续时间"。  我无法在摘要任务中更改此内容，因为它已显示为灰色。

您无法更改摘要任务的任务类型。请参阅此处的文章：http：//office.microsoft.com/en-us/project-help/dig-deeper-into-scheduling-RZ001077906.aspx？section = 9

摘要 任务始终具有固定持续时间任务类型。摘要任务基于其子任务的最早开始日期和最近完成日期，并且摘要任务的持续时间的计算基于其子任务。
因此，您无法直接更改摘要任务的持续时间。

>>我无法完成汇总任务以准确汇总其下的任务。

您如何期望汇总任务汇总子任务持续时间？编辑分配可能会导致分数持续时间（只是其中一个可能的原因）。这是你的日程安排吗？我的意思是，你知道修改或更新的历史吗？

请参阅讨论
为什么任务总数只是一天？

This has been driving me nuts.  I can't get the summary tasks to accurately roll-up the tasks beneath it.  One thing that I noticed is the summary tasks always have "Task Type: Fixed Duration".  I cannot change this in the summary task, since it's grayed out.  I have "Fixed Units" selected as the default in the project.  Other bit of info, the tasks are all in Auto-schedule mode.  I am at a complete loss.

Task Name	Work	Duration
Env 1 (DCS SPS 2010 Development)	22 hrs	35.67 hrs?
Backup Content DB from MB SPS 2010 Production	1 hr	0.13 days?
Migrate backups to DCS development	2 hrs	2 hrs?
Restore Content DB to Env 1	1 hr	0.13 days?
Provision new Web Application	1 hr	0.13 days?
Deploy customizations	4 hrs	0.33 days?
Deploy third-party features	2 hrs	0.13 days?
Attach Content DB to Web Application	1 hr	0.13 days?
Configure farm services manually	4 hrs	4 hrs
Review upgrade logs	2 hrs	0.25 days?
Validate sites & fix issues	4 hrs	0.5 days?

Thanks,

Peter

解决方案

>> One thing that I noticed is the summary tasks always have "Task Type: Fixed Duration".  I cannot change this in the summary task, since it's grayed out.

You cannot change task type of a summary task. Pls see the article here: http://office.microsoft.com/en-us/project-help/dig-deeper-into-scheduling-RZ001077906.aspx?section=9

A summary task always has a Fixed-duration task type. A summary task is based on the earliest start date and the latest finish date of its subtasks, and the calculation for a summary task's duration is based on its subtasks. So, you cannot directly change duration for a summary task.

>> I can't get the summary tasks to accurately roll-up the tasks beneath it.

How do you expect summary tasks to roll-up the subtask durations ? Fractional durations can be resulted from editing the assignments (just one of the possible reasons). Is this your schedule ? I mean, do you know the history of modifications or updates ?

Pls also see the discussion Why does the task total come up as a fraction of a day?

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