Re: EXT3 - freeze ups during disk writes

From: Mark Hahn (hahn@physics.mcmaster.ca)
Date: Sun Dec 02 2001 - 13:15:36 EST


in other mail I asked Erik about the disk's mode: it is PIO,
so the pathetic speed and crippling VM/Ext2 performance is
entirely expected. I'm guessing he's missing CONFIGs of either
the chipset-specific driver or one of:
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_ADMA=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_AUTO=y

> > I've seen a couple of reports where ext3 appears to exacerbate
> > the effects of poor hdparm settings. What is your raw disk
> > throughput, from `hdparm -t /dev/hda'?
>
> `hdparm -t /dev/hda` reports:
>
> # hdparm -t /dev/hda
>
> /dev/hda:
> Timing buffered disk reads: 64 MB in 16.76 seconds = 3.82 MB/sec

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Fri Dec 07 2001 - 21:00:19 EST