Problem with concurrent SATA-Writes

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi All!

I have a problem with two SATA-Discs. I have an onboard SIL3114 with four SATA-Ports an onboard NVIDIA with two SATA-Ports - both controllers are disable via BIOS (and are not detected by Linux)(only for this test of course - normally I have other HDD on this ports). The only controller that is found is the add-on controller in a PCI-Slot (SIL3112). And that is the one I have trouble with.

If I read or write (via dd) from the first one -> no problems. Same when read or write from the second or when I read (only read!) from both at the same time. Data-Transfer-Rate is around 45MB/s for one HDD.

The problem occures when I try to write on both discs at the same time. For example I write /dev/zero to the first one and then start to write /dev/zero to the second one. The System-Load goes up to 4 with nearly 100% io-wait and nearly no really write-access to the drives.

Any hints?

- no errormessages in syslog
- happens with Kernel 2.6.11.7 and with 2.6.12-rc5
- HDDs are Samsung Spinpoint 200GB
- (I use the SCSI-SATA-Drivers)
- anything else you need?

Thanks

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

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux