Fedora 10 - Boot Analysis
Casey Dahlin
cdahlin at redhat.com
Mon Dec 29 10:45:11 UTC 2008
Dan Horák wrote:
> Casey Dahlin píše v Po 29. 12. 2008 v 05:35 -0500:
>
>> Arjan van de Ven wrote:
>>
>>> On Tue, 16 Dec 2008 17:16:36 -0500 (EST)
>>> Seth Vidal <skvidal at fedoraproject.org> wrote:
>>>
>>>
>>>
>>>>> Or hibernate?
>>>>>
>>>>>
>>>> At least on my system hibernate takes as much time as a reboot.
>>>>
>>>>
>>>>
>>> btw this is a very fundamental property of hibernate. You need to do all
>>> disk IO to get the system state to disk. And then at resume, you need
>>> to do all disk IO to get the state from disk again. That's twice ;)
>>>
>>> This is compounded by the property that a hibernate tends to flush at
>>> least half the disk cache (it has to, to get space to work in), which
>>> you then need to page right back in, so even when you're back, the first
>>> minute or two sucks badly.
>>>
>>> I suspect you will always be able to boot faster than you can
>>> hibernate+resume.
>>>
>>>
>>>
>>>
>>>
>> Slightly off subject, did sreadahead ever get publicly released? Did I
>> miss it?
>>
>
> It has been even submitted for review -
> https://bugzilla.redhat.com/show_bug.cgi?id=464045
>
>
> Dan
>
>
>
Good news. Its not a magic bullet any more than anything else but I like
this app a lot.
--CJD
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