Re: SCHED_ULE trouble after ugrade 6.2-RELEASE -> 6.3-RELEASE

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[e-mail] wrote:
> Quoting Xin LI <[e-mail]>:
> 
>> Do NOT use ULE on 6.x.  ULE has been revamped heavily on 7.0 and the
>> version on 6.x is old, and is known to contain some bugs.
> 
> Is it particular to 6.x *SMP* systems ?

Particular to *all* 6.x systems at the moment, possibly.

> I've been using 6.3-R with ULE for about a fortnight without any trouble (on a
> pentium4-m UP).
> I was drivent to switch to ULE because I suffered awful slow-downs, mouse
> jerkiness and all: when compiling kernel or a port, for instance, mouse would
> not respond with fluidity in firefox, switching tabs would take many seconds,
> and watching TV with vlc showed many cut-offs and fixed pictures (not related to
> network traffic or bandwidth limitations).
> The transition to ULE made them disappear (still occasional mouse jerkiness
> though).
> 
> I suppose the enhancements/corrections of 7.x ULE won't be MFC'd ?

I can not speak for that, but my understanding is, no, it won't be
MFC'ed.  The performance enhancements on 7.x included a lot of factors,
ULE is one of them, and there are also some other enhancements in the
system, which could be not suitable for MFC due to ABI/KBI change.

Cheers,
- --
Xin LI <[e-mail]>	http://www.delphij.net/
FreeBSD - The Power to Serve!
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