> Lousy ZFS performance on D945GSEJT > > Hello, > > I have installed OpenSolaris 2009/06 on D945GSEJT see > [1]: > - Intel Atom CPU N270 1.6Ghz (32Bit)
Atom cpus are *slow*. I hope you didn't enable compression on your zfs filesystems... And most of them do not support 64-bit... > - Intel Mobile 945GSE Express Chipset > - Intel 82945GSE Graphics and Memory Controller Hub > (GMCH) > - Intel 82801GBM I/O Controller Hub (ICH7-M) Is the S-ATA controller in the ICH7 set to AHCI or to legacy P-ATA mode? That is, does Solaris use the "ahci" or the "pci-ide" driver? > - Realtek 8111DL Gigabit Ethernet Controller > - 2 Gb Ram DDR2 533 Mhz Solaris' zfs on 32-bit hardware will use no more than ~ 512MB of ram for caching zfs data. This can be tuned by lowering the eeprom "kernelbase" parameter. > - 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? Are you accessing lots of small files? Or a few big files? > CPU and RAM usage are looking fairly ok during file > transfer. > > Is it possible to substantially improve by SW > configuration? How? Question is: what is the bottleneck? What filesystem performance do you get when performing local zfs filesystem reads/writes? What network throughput to you get when you run a tcp benchmark like "ttcp" between the Solaris D945GSEJT and the vista box? You could also experiment with an ftp server on the opensolaris box, and transfer (put or get) some iso images to / from the vista box, in binary mode. What throughput can you observe with such a test? C:\> ftp opensolaris ... ftp> bin ftp> get osol-0906-x86.iso nul: ... ftp> put osol-0906-x86.iso /dev/null > 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) 9Mb/s write for zfs? Or 16Mb/s [... from Windows Vista (16Mb/s write and 6,7Mb/s read)] ? -- This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
