Date: Fri, 08 Feb 2008 17:14:46 +0100 From: Dominic Fandrey <kamikaze@bsdforen.de> To: Tom Evans <tevans.uk@googlemail.com> Cc: "Carlos A. M. dos Santos" <unixmania@gmail.com>, freebsd-stable@freebsd.org Subject: Re: RELENG_7: interrupt eating whole cpu core Message-ID: <47AC7FF6.1020801@bsdforen.de> In-Reply-To: <1202485501.2126.34.camel@localhost> References: <47A9F835.1060200@bsdforen.de> <47AA0696.5020109@bsdforen.de> <7872AB6E-21DA-4E2D-93C0-D07CFA3A7E47@mac.com> <47AA0E3E.4020304@bsdforen.de> <e71790db0802071822l661bdcb8s6dfe5b94be11f0dc@mail.gmail.com> <47ABF66E.4040807@bsdforen.de> <e71790db0802080543g54d27bb8nfdc33e342f982b4@mail.gmail.com> <1202485501.2126.34.camel@localhost>
next in thread | previous in thread | raw e-mail | index | archive | help
Tom Evans wrote: > On Fri, 2008-02-08 at 11:43 -0200, Carlos A. M. dos Santos wrote: >> <snip> >> Yes, it happens in my notebook (HP NX6320). > > Sorry to jump into this thread, as it is slightly off-topic - I have a > HP NC6320 (so not quite exact same model, but specs seem extremely close > - mine is a core duo, not core 2 duo, but chipset, graphics, screen size > is identical), and cannot get my DVD drive to operate in DMA mode. I > track RELENG_7, last updated 3rd Feb. > > I have: > > acd0: DVDR <MATSHITADVD-RAM UJ-840S/1.11> at ata0-master PIO4 > > on a > > atapci0: <Intel ICH7 UDMA100 controller> port > 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x60a0-0x60af irq 16 at device 31.1 > on pci0 > ata0: <ATA channel 0> on atapci0 > ata0: [ITHREAD] > ata1: <ATA channel 1> on atapci0 > ata1: [ITHREAD] > > with settings of > > hw.ata.wc: 1 > hw.ata.atapi_dma: 1 > hw.ata.ata_dma: 1 > > atacontrol says this about the DVD drive: > >> # atacontrol info ata0; atacontrol cap acd0 > Master: acd0 <MATSHITADVD-RAM UJ-840S/1.11> ATA/ATAPI revision 6 > Slave: no device present > > Protocol ATA/ATAPI revision 6 > device model MATSHITADVD-RAM UJ-840S > serial number > firmware revision 1.11 > cylinders 0 > heads 0 > sectors/track 0 > lba supported > lba48 not supported > dma supported > overlap not supported > > Feature Support Enable Value Vendor > write cache no no > read ahead no no > Tagged Command Queuing (TCQ) no no 0/0x00 > SMART no no > microcode download no no > security no no > power management no no > advanced power management no no 0/0x00 > automatic acoustic management no no 0/0x00 0/0x00 > >> # atacontrol mode acd0 > current mode = PIO4 > > If I try to turn on DMA, I just get WDMA2, which just doesn't cut it: I think any DMA mode is fast enough to handle a DVD drive. There's just no necessity for more. >> # atacontrol mode acd0 udma5 > current mode = WDMA2 Same as for me. I'm satisfied with the speed of the drive.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?47AC7FF6.1020801>