Re: [boost] boost 153 interprocess_mutex much slower in windows 7 than xp?

Subject: Re: [boost] boost 153 interprocess_mutex much slower in windows 7 than xp?
From: jim_at_[hidden]
Date: 2013-10-07 12:35:48

> We have 3 processes that are synchronized with an interprocess mutex.
> Basically one of them has a multiplier which allows the others to run at a
> synchronized accelerated rate. Under XP we typically can get it to run at
> 5000 times realtime. New desktop refreshes are coming out running Windows
> 7 and the same code with faster machines with more memory are maxing out
> at 250 times with 95%+ cpu idle time.
>
> Am new to boost so am wondering if we're doing something wrong. Here's the
> crux of the code. 3 processes and some shared memory.
> ...

It might be hitting the disk when it shouldn't be. Try pointing
SysInternals' ProcMon at each and see if one's doing file accesses where
the other isn't. (SysInternals.com.)