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Re: SATA RAID5 speed drop of 100 MB/s
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From: Tejun Heo
Subject:
Re: SATA RAID5 speed drop of 100 MB/s
Date: Friday, June 22, 2007 - 11:22 pm
Carlo Wood wrote:
quoted text
> For what it's worth... I tried applying > > --- a/drivers/ata/ahci.c > +++ b/drivers/ata/ahci.c > @@ -516,6 +516,8 @@ static void ahci_save_initial_config(struct pci_dev *pdev, > * reset. Values without are used for driver operation. > */ > hpriv->saved_cap = cap = readl(mmio + HOST_CAP); > + hpriv->saved_cap &= ( (1<<28) | (1<<17) ); > + hpriv->saved_cap |= (1 << 27); > hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
Hmmm... That's super-odd. You win my oddest-of-the-month award. :-) I'll think about it a bit. Please stand by. -- tejun -
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Messages in current thread:
SATA Harddisk speed drop of 100 MB/s
, Carlo Wood
, (Wed Jun 20, 3:48 pm)
Re: SATA Harddisk speed drop of 100 MB/s
, Jeff Garzik
, (Wed Jun 20, 4:06 pm)
Re: SATA Harddisk speed drop of 100 MB/s
, Arjan van de Ven
, (Wed Jun 20, 8:36 pm)
Re: SATA Harddisk speed drop of 100 MB/s
, Carlo Wood
, (Fri Jun 22, 9:21 am)
Re: SATA Harddisk speed drop of 100 MB/s
, Henrique de Moraes H ...
, (Fri Jun 22, 2:17 pm)
Re: SATA Harddisk speed drop of 100 MB/s
, Carlo Wood
, (Fri Jun 22, 2:27 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Carlo Wood
, (Fri Jun 22, 2:44 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Carlo Wood
, (Fri Jun 22, 2:48 pm)
Re: SATA Harddisk speed drop of 100 MB/s
, Henrique de Moraes H ...
, (Fri Jun 22, 6:31 pm)
Re: SATA Harddisk speed drop of 100 MB/s
, Carlo Wood
, (Fri Jun 22, 7:59 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Carlo Wood
, (Fri Jun 22, 8:54 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Tejun Heo
, (Fri Jun 22, 11:22 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Jeff Garzik
, (Sat Jun 23, 12:03 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Tejun Heo
, (Sat Jun 23, 12:54 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Carlo Wood
, (Sat Jun 23, 5:53 am)
Re: SATA Harddisk speed drop of 100 MB/s
, Andrew Morton
, (Sat Jun 23, 10:29 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Bartlomiej Zolnierki ...
, (Sat Jun 23, 10:30 am)
Re: SATA Harddisk speed drop of 100 MB/s
, Jeff Garzik
, (Sat Jun 23, 3:21 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Jeff Garzik
, (Sat Jun 23, 3:43 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Michael Tokarev
, (Sun Jun 24, 4:58 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Dr. David Alan Gilbert
, (Sun Jun 24, 5:59 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Justin Piszcz
, (Sun Jun 24, 7:21 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Michael Tokarev
, (Sun Jun 24, 8:48 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Michael Tokarev
, (Sun Jun 24, 8:52 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Justin Piszcz
, (Sun Jun 24, 9:59 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Carlo Wood
, (Sun Jun 24, 3:07 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Mark Lord
, (Sun Jun 24, 4:46 pm)
Re: SATA RAID5 speed drop of 100 MB/s
, Patrick Mau
, (Sun Jun 24, 5:23 pm)
Re: SATA Harddisk speed drop of 100 MB/s
, Lennart Sorensen
, (Mon Jun 25, 8:18 am)
Re: SATA Harddisk speed drop of 100 MB/s
, Carlo Wood
, (Mon Jun 25, 9:04 am)
Re: SATA RAID5 speed drop of 100 MB/s
, Phillip Susi
, (Thu Jul 5, 3:12 pm)
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