Date: Mon, 19 Jun 2006 13:04:56 +0200 From: Karsten Brandt <Karsten.Brandt@sick.de> To: freebsd-drivers@freebsd.org Subject: ata CD driver Message-ID: <OF4C7FBB29.B1006FE6-ONC1257192.003B96A9-C1257192.003D5151@sick.de>
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Hello all, I'm working on the ATA CD driver to increase his performance. history: I've tried to use ogle for video playback and it works. But I can also seen many short breaks during the playback process. After some test, I've determine the performance of the ATA driver as bottleneck. Some days later I could see, that the driver uses many synchronisation objects of course. And the use of this synchronisation objects blocks the entire system. After some refactorings I can see now some prosperities. But for the complete understand I search informations for the ATA_LOCKING function. I can't find a documentation and what I me confused a little bit, I can't find this function not in the source tree of my FreeBSD. I work on an upgraded FreeBSD 6.1 and I was very happy for each hint. Regards, Karsten
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