Posted August 10, 201113 yr my parity seems to be running really slow Total size: 2 TB Current position: 725.39 GB (36%) Estimated speed: 21.01 MB/sec Estimated finish: 1011 minutes syslog.zip
August 10, 201113 yr my parity seems to be running really slow Total size: 2 TB Current position: 725.39 GB (36%) Estimated speed: 21.01 MB/sec Estimated finish: 1011 minutes That's faster than mine on my older server. It gets about 16MB/s. To know your parity calc speed it is correct for YOUR HARDWARE we need to know YOUR HARDWARE and you must follow the general instructions in the sticky at the top of this forum. (attach a syslog) Joe L.
August 10, 201113 yr syslog is attached You have 20 drives... Are any on a PCI bus? You've not described your hardware. (Motherboard, disk controller cards) Your speed is looking pretty normal if you do not have optimal hardware with the required buss bandwidth.
August 10, 201113 yr Author 4 of the drives are on the motherboard cpu amd sempron 145 ram 4gb 2 x Supermicro AOC-SASLP-MV8, 8-Port SAS/SATA Card board is Asus M4A87TD EVO
August 10, 201113 yr Aug 8 20:04:37 Tower kernel: Probing IDE interface ide1... Aug 8 20:04:37 Tower kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Aug 8 20:04:37 Tower kernel: ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Aug 8 20:04:37 Tower kernel: ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Aug 8 20:04:37 Tower kernel: ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) It seems as though your 4 drives on the motherboard might be running at IDE speeds. Boot into your motherboard's BIOS and set all SATA ports to AHCI mode. Also disable IDE/SATA combined mode if you see it anywhere. In the SASLP cards' BIOS, make sure INT13 is disabled for both cards. You also have some WDEARS drives. Are these drives 4k aligned or not? Do they have jumpers installed?
August 10, 201113 yr Could this have anything to do with the parity Check Speed issues Tom mentioned he found in the 2.6.39.1 kernel back in the beta.7 days? I know beta10 is using 2.6.39.3, but it may be related... The linux kernel was also updated to 2.6.37.6 in order to pick up some mvsas driver fixes. (I wanted to update to the latest kernel release, 2.6.39.1, but parity check speed was cut by 80% using this kernel for some reason that I haven't figured out yet.)
August 10, 201113 yr Author Aug 8 20:04:37 Tower kernel: Probing IDE interface ide1... Aug 8 20:04:37 Tower kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Aug 8 20:04:37 Tower kernel: ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Aug 8 20:04:37 Tower kernel: ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Aug 8 20:04:37 Tower kernel: ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) It seems as though your 4 drives on the motherboard might be running at IDE speeds. Boot into your motherboard's BIOS and set all SATA ports to AHCI mode. Also disable IDE/SATA combined mode if you see it anywhere. In the SASLP cards' BIOS, make sure INT13 is disabled for both cards. You also have some WDEARS drives. Are these drives 4k aligned or not? Do they have jumpers installed? all drives are set pm ahci in bios on the sata cards int13 disabled on both all drves are 4k aligned with no jumpers
August 10, 201113 yr Author just switched to beta9 2 TB Current position: 1.92 GB (0%) Estimated speed: 56.04 MB/sec Estimated finish: 594 minutes so this is solved
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