Lousy ZFS performance on D945GSEJT

[Oliver Feilner]

Lousy ZFS performance on D945GSEJT

Hello,

I have installed OpenSolaris 2009/06 on D945GSEJT see [1]:
- Intel Atom CPU N270 1.6Ghz (32Bit)
- Intel Mobile 945GSE Express Chipset
- Intel 82945GSE Graphics and Memory Controller Hub (GMCH)
- Intel 82801GBM I/O Controller Hub (ICH7-M)
- Realtek 8111DL Gigabit Ethernet Controller
- 2 Gb Ram DDR2 533 Mhz
- 1TB Western Digital Caviar Green (WD10EADS)

And followed an Article on heise [2] to setup a CIFS share.

But actually I’m receiving bad file system performance (ZFS) on my CIFS share when accessing from Windows Vista [b](16Mb/s write and 6,7Mb/s read)[/b] on Gigabit Ethernet.

The question is now, is that low performance expected on that HW?
CPU and RAM usage are looking fairly ok during file transfer.

Is it possible to substantially improve by SW configuration? How?

Which else HW with low power usage could be recommended for better performance? Would have the ZOTAC ION ITX A [3] better performance and is it supported? I doubt it is not because of the Ethernet chip RTL8211 CL see Manuel [4]!

Just as Note:
With FreeNas based on FreeBSD I received with UFS file system 30Mb/s write and 40Mb/s read and with ZFS 9Mb/s write and 6,5Mb/s read)

Best regards,

Oliver

[1] D945GSEJT Documentation http://download.intel.com/support/motherboards/desktop/d945gsejt/sb/e62862001us.pdf
[3] NAS on OpenSolaris http://www.heise.de/open/OpenSolaris-als-Fileserver--/artikel/119995
[3]Zotac ION ITX A Brochure http://www.zotac.com/httpdocs/brochures/mb/ZOTAC-ION-ITX_v3.pdf
[4] Zotac ION ITX A Manual http://www.zotac.com/index.php?option=com_docman&task=doc_download&gid=461&Itemid=506

[Stefano Delli Ponti]

Post by Oliver Feilner
Lousy ZFS performance on D945GSEJT
Hello,
- Intel Atom CPU N270 1.6Ghz (32Bit)
- Intel Mobile 945GSE Express Chipset
- Intel 82945GSE Graphics and Memory Controller Hub (GMCH)
- Intel 82801GBM I/O Controller Hub (ICH7-M)
- Realtek 8111DL Gigabit Ethernet Controller
- 2 Gb Ram DDR2 533 Mhz
- 1TB Western Digital Caviar Green (WD10EADS)

Hi Oliver,

I have a configuration very similar to yours but I get much better
performances.

Be sure to image-update your OS (I have svn_134) because I know that a
major bug in the Realtek driver was fixed at a certain ppint.

Stefano

Post by Oliver Feilner
And followed an Article on heise [2] to setup a CIFS share.
But actually I’m receiving bad file system performance (ZFS) on my CIFS share when accessing from Windows Vista [b](16Mb/s write and 6,7Mb/s read)[/b] on Gigabit Ethernet.
The question is now, is that low performance expected on that HW?
CPU and RAM usage are looking fairly ok during file transfer.
Is it possible to substantially improve by SW configuration? How?
Which else HW with low power usage could be recommended for better performance? Would have the ZOTAC ION ITX A [3] better performance and is it supported? I doubt it is not because of the Ethernet chip RTL8211 CL see Manuel [4]!
With FreeNas based on FreeBSD I received with UFS file system 30Mb/s write and 40Mb/s read and with ZFS 9Mb/s write and 6,5Mb/s read)
Best regards,
Oliver
[1] D945GSEJT Documentation http://download.intel.com/support/motherboards/desktop/d945gsejt/sb/e62862001us.pdf
[3] NAS on OpenSolaris http://www.heise.de/open/OpenSolaris-als-Fileserver--/artikel/119995
[3]Zotac ION ITX A Brochure http://www.zotac.com/httpdocs/brochures/mb/ZOTAC-ION-ITX_v3.pdf
[4] Zotac ION ITX A Manual http://www.zotac.com/index.php?option=com_docman&task=doc_download&gid=461&Itemid=506

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perf-discuss