Hello, in the last few days I set up a freebsd box with 3 Western Digital Caviar Green 2TB drives (WD EARS series, but that shouldn't be the problem...) with ZFS on the drives.
I'm experiencing really annoying fluctuations with the performance of the drives. Here is an example: http://www.stefreak.de/io-einbrueche.png (Downloading data through my ADSL) The problem occurs both locally (executing commands on the shell hangs randomly) and over the network, of course. So the problem can't be the networking stack or chip. I think I can exclude the ZFS implementation too, because I tried dd if=/dev/da0 of=/dev/null and executed killall -SIGINFO dd while it was copying and it looked like it stalled randomly too. Now I'm searching for the cause of the problem. Has anyone an idea? Here's my pciconf -lv output: # pciconf -lv hos...@pci0:0:0:0: class=0x060000 card=0x50001458 chip=0x29c08086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = 'P35/G33 (Bearlake) Processor to I/O Controller' class = bridge subclass = HOST-PCI no...@pci0:0:27:0: class=0x040300 card=0xa0021458 chip=0x27d88086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = 'IDT High Definition Audio Driver (BA101897)' class = multimedia subclass = HDA pc...@pci0:0:28:0: class=0x060400 card=0x50011458 chip=0x27d08086 rev=0x01 hdr=0x01 vendor = 'Intel Corporation' device = '82801G (ICH7 Family) PCIe Root Port' class = bridge subclass = PCI-PCI pc...@pci0:0:28:1: class=0x060400 card=0x50011458 chip=0x27d28086 rev=0x01 hdr=0x01 vendor = 'Intel Corporation' device = '82801G (ICH7 Family) PCIe Root Port' class = bridge subclass = PCI-PCI uh...@pci0:0:29:0: class=0x0c0300 card=0x50041458 chip=0x27c88086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82801G (ICH7 Family) USB Universal Host Controller' class = serial bus subclass = USB uh...@pci0:0:29:1: class=0x0c0300 card=0x50041458 chip=0x27c98086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82801G (ICH7 Family) USB Universal Host Controller' class = serial bus subclass = USB uh...@pci0:0:29:2: class=0x0c0300 card=0x50041458 chip=0x27ca8086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82801G (ICH7 Family) USB Universal Host Controller' class = serial bus subclass = USB uh...@pci0:0:29:3: class=0x0c0300 card=0x50041458 chip=0x27cb8086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82801G (ICH7 Family) USB Universal Host Controller' class = serial bus subclass = USB eh...@pci0:0:29:7: class=0x0c0320 card=0x50061458 chip=0x27cc8086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82801G (ICH7 Family) USB 2.0 Enhanced Host Controller' class = serial bus subclass = USB pc...@pci0:0:30:0: class=0x060401 card=0x50001458 chip=0x244e8086 rev=0xe1 hdr=0x01 vendor = 'Intel Corporation' device = '82801 Family (ICH2/3/4/5/6/7/8/9,63xxESB) Hub Interface to PCI Bridge' class = bridge subclass = PCI-PCI is...@pci0:0:31:0: class=0x060100 card=0x50011458 chip=0x27b88086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = 'Intel 82801GB/GR (ICH7 Family) LPC Interface Controller - 27B8 (945GL)' class = bridge subclass = PCI-ISA atap...@pci0:0:31:2: class=0x01018a card=0xb0021458 chip=0x27c08086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82801GB/GR/GH (ICH7 Family) Serial ATA Storage Controller' class = mass storage subclass = ATA no...@pci0:0:31:3: class=0x0c0500 card=0x50011458 chip=0x27da8086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = 'Intel[R] 82801G (ICH7 Family) C- 27DA (82801G)' class = serial bus subclass = SMBus r...@pci0:2:0:0: class=0x020000 card=0xe0001458 chip=0x816810ec rev=0x01 hdr=0x00 vendor = 'Realtek Semiconductor' device = 'Gigabit Ethernet NIC(NDIS 6.0) (RTL8168/8111/8111c)' class = network subclass = ethernet Greetings & Thank You, Steffen _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"