高分辨率睡眠 [英] High resolution Sleep
问题描述
Sleep()函数睡眠时间为1毫秒,有一种方法可以使一个
线程睡眠时间不到一毫秒?我知道的一种方法是使用
性能计数器,它不是真正的睡眠状态(循环并再次检查并再次使用
并使用CPU时间)。
>
谢谢
Charles Zhang
Sleep() function Sleep at lease 1 millisecond, there is a way to make a
thread to sleep less than a millisecond? One way I know of is using
performance counter which is not really sleep ( loop and check again and
again and uses CPU time).
Thanks
Charles Zhang
推荐答案
Even Sleep()没有真正的1毫秒分辨率。
没有比Windows AFAIK中的性能计数器更好的计时器。
Mark
-
Mark Salsbery
Microsoft MVP - Visual C ++
" Charles Zhang" < Ch ********** @ newsgroups.nospamwrote in message
news:Ov ************** @ TK2MSFTNGP02.phx.gbl ...
Even Sleep() doesn''t have true 1 ms resolution.
There''s no better timer than the performance counter in Windows AFAIK.
Mark
--
Mark Salsbery
Microsoft MVP - Visual C++
"Charles Zhang" <Ch**********@newsgroups.nospamwrote in message
news:Ov**************@TK2MSFTNGP02.phx.gbl...
Sleep()函数睡眠时间为1毫秒,有一种方法可以使一个
线程睡眠时间少于一个毫秒?我知道的一种方法是使用
性能计数器,它不是真正的睡眠状态(循环并再次检查并再次使用
并使用CPU时间)。
>
谢谢
Charles Zhang
Sleep() function Sleep at lease 1 millisecond, there is a way to make a
thread to sleep less than a millisecond? One way I know of is using
performance counter which is not really sleep ( loop and check again and
again and uses CPU time).
Thanks
Charles Zhang
和...时间结构怎么样?
hh:mm:ss,dd
其中99> = dd> = 0
dd是毫秒......
和思考多一点,cpu cicles怎么样?
" Mark Salsbery [MVP ]" < MarkSalsbery [MVP] @newsgroup.nospamescribióenel
mensaje新闻:75 ************************** ******** @ microsof t.com ...
and.. what about with time struct?
hh:mm:ss,dd
where 99>=dd>=0
dd are miliseconds...
and thinking a little more, what about cpu cicles?
"Mark Salsbery [MVP]" <MarkSalsbery[MVP]@newsgroup.nospamescribió en el
mensaje news:75**********************************@microsof t.com...
Even Sleep()没有真正的1 ms分辨率。
没有比Windows AFAIK中的性能计数器更好的计时器。
Mark
-
Mark Salsbery
Microsoft MVP - Visual C ++
" Charles Zhang" < Ch ********** @ newsgroups.nospamwrote in message
news:Ov ************** @ TK2MSFTNGP02.phx.gbl ...
Even Sleep() doesn''t have true 1 ms resolution.
There''s no better timer than the performance counter in Windows AFAIK.
Mark
--
Mark Salsbery
Microsoft MVP - Visual C++
"Charles Zhang" <Ch**********@newsgroups.nospamwrote in message
news:Ov**************@TK2MSFTNGP02.phx.gbl...
> Sleep()函数睡眠时间为1毫秒,有一种方法可以使一个
线程睡眠时间不到一毫秒?我知道的一种方法是使用
性能计数器,它不是真正的睡眠状态(循环并再次检查并再次使用CPU时间)。
谢谢
Charles Zhang
>Sleep() function Sleep at lease 1 millisecond, there is a way to make a
thread to sleep less than a millisecond? One way I know of is using
performance counter which is not really sleep ( loop and check again and
again and uses CPU time).
Thanks
Charles Zhang
你可以使用clockres来自Sysinternals(今天的微软)在你的机器上看到
的最低分辨率。我的(四核是15.6毫秒)。
我认为不到15毫秒是不可能的,并且肯定15毫秒的睡眠变成了很多的b $ b更多时间因为Windows使用睡眠来完成其他任务,
如果你放一个for()循环,你的CPU时间会被scalated到100%和
肯定会没有更精确的睡眠。
" Charles Zhang" < Ch ********** @ newsgroups.nospamwrote in message
news:Ov ************** @ TK2MSFTNGP02.phx.gbl ...
You can use "clockres" from Sysinternals (today Microsoft) to see the
minimum resolution in your machine. Mine (Quad core is 15.6 ms).
I think less than 15 ms is impossible, and surely a sleep of 15 ms becomes
in a lot of more time because Windows uses that sleeping to do other tasks,
and if you put a for() loop you will get your CPU time scalated to 100% and
surely with no more precission that sleep.
"Charles Zhang" <Ch**********@newsgroups.nospamwrote in message
news:Ov**************@TK2MSFTNGP02.phx.gbl...
Sleep()函数睡眠时间为1毫秒,有一种方法可以使一个
线程睡眠时间少于一个毫秒?我知道的一种方法是使用
性能计数器,它不是真正的睡眠状态(循环并再次检查并再次使用
并使用CPU时间)。
>
谢谢
Charles Zhang
Sleep() function Sleep at lease 1 millisecond, there is a way to make a
thread to sleep less than a millisecond? One way I know of is using
performance counter which is not really sleep ( loop and check again and
again and uses CPU time).
Thanks
Charles Zhang
-
Microsoft Visual C ++ MVP
========================
Mi blogsobreprogramación: http://geeks.ms/blogs/rfog
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Libros, cienciaficciónyprogramación
====================================== ==
Es un hecho que el hombre tiene que controlar la ciencia y chequear
ocasionalmente el avance delatecnología。
- Thomas Henry赫胥黎。
--
Microsoft Visual C++ MVP
========================
Mi blog sobre programación: http://geeks.ms/blogs/rfog
Momentos Leves: http://momentosleves.blogspot.com/
Libros, ciencia ficción y programación
========================================
Es un hecho que el hombre tiene que controlar la ciencia y chequear
ocasionalmente el avance de la tecnología.
-- Thomas Henry Huxley.
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