Re: [zfs-discuss] ZFS raid is very slow???
I am using 4 SATA II drives, with this card (see the comments) which got detected by Solaris automatically: http://napobo3.blogspot.com/2006/04/sata2-under-b36.html I understand that my 32bit CPU is the limiting factor? But that seems a bit strange I think. A [EMAIL PROTECTED] should be able to squeese out ~5 GFlops, and one thinks that should be plenty for a file system as ZFS? Well, I hope to upgrade to Penryn later this year, and then I really hope it will be faster than 15MB/sec transfer rate. (I have a ASROCK P4V88 motherboard, which I have inserted the PCI-X SATA card into. The mobo doesnt have PCI-X, but the card reverts to ordinary PCI when inserted and it works right out of the box). This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS raid is very slow???
I did that, and here are the results from the ZFS jury: bash-3.00$ timex dd if=/dev/zero of=file bs=128k count=8192 8192+0 records in 8192+0 records out real 19.40 user 0.01 sys1.54 That is, 1GB created on 20sec = 50MB/sec. That is better, but still not good, as each drive of the four drives are capable of 50MB/sec. However, I can not achieve 50MB/sec in normal use. Strange. I will presume that the numbers get better when I upgrade to 64bit. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS raid is very slow???
I am using Solaris Express Community build 67 installed on a 40GB harddrive (UFS filesystem on Solaris), dual boot with Windows XP. I have a zfsraid with 4 samsung drives. It is a [EMAIL PROTECTED] and 1GB RAM. When I copy a 1.3G file from ZFSpool to ZFSpool the command time cp file file2 gives this output: bash-3.00# time cp PAGEFILE.SYS pagefil3 real0m49.719s user0m0.004s sys 0m10.160s Which gives like 26MB/sec. When I copy that file from ZFS to UFS I get: real0m35.091s user0m0.004s sys 0m15.337s Which gives 37MB/sec. However, in each of the above scenarios, the system monitor shows that all RAM is used up and it begins to swap (the swap uses like 40MB). My system has never swapped before (Windows swaps immediately upon startup, ha!). The cpu utilization is like 50%. When I copy that file from UFS to UFS I get: real1m36.315s user0m0.003s sys 0m11.327s However, the CPU utilization is around 20% and RAM usage never exceeds 600MB - it doesnt use the swap. When I copy that file from ZFS to /dev/null I get this output: real0m0.025s user0m0.002s sys 0m0.007s which can't be correct. Is it wrong of me to use time cp fil fil2 when measuring disk performance? I mount NTFS with packages FSWfsmisc and FSWfspart, by Moinak Ghosh (and based on Martin Rosenau's work and part of Moinak's BeleniX work) This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] ZFS raid is very slow???
have set up a ZFS raidz with 4 samsung 500GB hard drives. It is extremely slow when I mount a ntfs partition and copy everything to zfs. Its like 100kb/sec or less. Why is that? When I copy from ZFSpool to UFS, I get like 40MB/sec - isnt it very low considering I have 4 new 500GB discs in raid? And when I copy from UFS to ZPool I get like 20MB/sec. Strange? Or normal results? Should I expect better performance? As of now, I am disappointed of ZFS. I used this card: http://www.supermicro.com/products/accessories/addon/AoC-SAT2-MV8.cfm Express Community build 67 detected it automatically and everything worked. I inserted the card into a PCI slot, and it worked too. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Re: Optimal strategy (add or replace disks) to build a cheap and raidz?
What brand is your 8 port satacontroller? I want one sata controller too, but heard that Solaris is picky about the model. All controllers doesnt work. Your does? This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
