Date: Mon, 04 Feb 2008 12:21:01 -0800 From: Xin LI <delphij@delphij.net> To: gregoryd.freebsd@free.fr Cc: freebsd-hackers@freebsd.org, d@delphij.net Subject: Re: SCHED_ULE trouble after ugrade 6.2-RELEASE -> 6.3-RELEASE Message-ID: <47A773AD.1010108@delphij.net> In-Reply-To: <1202156029.47a771fda5d1c@imp.free.fr> References: <47A6D272.2000406@gmail.com> <47A6D420.5050700@delphij.net> <1202156029.47a771fda5d1c@imp.free.fr>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 gregoryd.freebsd@free.fr wrote: > Quoting Xin LI <delphij@delphij.net>: > >> 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 <delphij@delphij.net> http://www.delphij.net/ FreeBSD - The Power to Serve! -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHp3Osi+vbBBjt66ARAud3AKCyFlIGeLTD5US/wbzWP6dwJclPZwCfRLF2 TyTZ5a+OHVX6zHEXKm+Oj0A= =F1PJ -----END PGP SIGNATURE-----
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