Hi, these are my test results for the hdd speed with the Marvel PMP MV88SM9602:
Driver information: hdparm -I /dev/sda /dev/sda: ATA device, with non-removable media Model Number: WD10JPVT-00MS8T0 Serial Number: WD-WXB1A1356953 Firmware Revision: Standards: Supported: 9 8 7 6 Likely used: 9 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 1953525168 device size with M = 1024*1024: 953869 MBytes device size with M = 1000*1000: 1000204 MBytes (1000 GB) Capabilities: LBA, IORDY(can be disabled) Queue depth: 32 Standby timer values: spec'd by standard, with device specific minimum R/W multiple sector transfer: Max = 16 Current = 0 AdvancedPM level: unknown setting (0x0060) DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * NOP cmd * READ BUFFER cmd * WRITE BUFFER cmd * Host Protected Area feature set * Look-ahead * Write cache * Power Management feature set Security Mode feature set * SMART feature set * FLUSH CACHE EXT cmd * Mandatory FLUSH CACHE cmd * Device Configuration Overlay feature set * 48-bit Address feature set SET MAX security extension * SET FEATURES subcommand required to spinup after power up Power-Up In Standby feature set * Adv. Power Management feature set * DOWNLOAD MICROCODE cmd * General Purpose Logging feature set * SMART self-test * SMART error logging Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count supported: enhanced erase 178min for SECURITY ERASE UNIT. 178min for ENHANCED SECURITY ERASE UNIT. Checksum: correct Speed tests (reading): # hdparm -tT /dev/sda /dev/sda: Timing buffer-cache reads: 348 MB in 0.51 seconds = 695658 kB/s Timing buffered disk reads: 294 MB in 3.00 seconds = 100205 kB/s # time dd if=tempfile of=/dev/null bs=1M count=1024 1024+0 records in 1024+0 records out real 0m 18.84s user 0m 0.03s sys 0m 5.68s Writing: time dd if=/dev/zero of=tempfile bs=1M count=1024 conv=fsync,notrunc 1024+0 records in 1024+0 records out real 1m 33.33s user 0m 0.02s sys 0m 6.21s If you need some special test (we don't use raid for example) ask - i'll perform these tests if possible. Tobias Am Donnerstag, 25. Dezember 2014 12:01:34 UTC+1 schrieb Tobias Andresen: > > Yes, thats right. Forgot this to mention. Our custom A20 board has always > a port multiplier on it. > > 2014-12-25 10:59 GMT+01:00 Hans de Goede <hdego...@redhat.com>: > >> Hi, >> >> On 25-12-14 10:48, tandresen1...@gmail.com wrote: >> >>> I'll check this on Monday and post the results. >>> >> >> 3.19 has this patch: >> >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/ >> linux.git/commit/drivers/ata/ahci_sunxi.c?id= >> 35c16a8f0b994461d49ce2479c67903f95045159 >> >> Which allows you to specify ahci_sunxi.enable_pmp=1 on the kernel >> commandline for use with port multipliers. >> >> I've been running my own tests with a port multiplier, and the reason why >> the original allwinner code has the AHCI_HFLAG_NO_PMP flag is because >> while port multipliers will work without it, normal disks will break if >> that flag is not set. So I've added a module option which >> will remove the flag when set for use with port multipliers. >> >> Regards, >> >> Hans >> >> >> >>> Am Mittwoch, 24. Dezember 2014 15:37:26 UTC+1 schrieb arete74: >>> >>>> >>>> hi, you can report the speed transfer with sata pm? >>>> >>>> regards >>>> >>>> 2014-12-23 22:03 GMT+01:00 <tandre...@gmail.com <javascript:>>: >>>> >>>> The A20 supports PMP, just remove the Flag AHCI_HFLAG_NO_PMP in the >>>>> sunxi >>>>> ahci driver. >>>>> Please take a look in the Manual of the A20 (6.15.1). The SATA >>>>> interface >>>>> has the following specification: >>>>> Comply with SATA Spec. 2.6, and AHCI Revision 1.3 specifications >>>>> >>>>> This includes the PMP support. >>>>> >>>>> We are using a Marvel PMP and it works fine - both disks are detected >>>>> and >>>>> work. >>>>> >>>>> Regards >>>>> >>>>> Tobias >>>>> >>>>> Am Dienstag, 23. Dezember 2014 11:55:58 UTC+1 schrieb bruce bushby: >>>>> >>>>> >>>>>> >>>>>> Any progress on this? I found this thread: >>>>>> http://forum.lemaker.org/thread-9207-1-1-.html >>>>>> >>>>>> Which states: >>>>>> "....the patch seems to work with the latest 3.18 kernel from >>>>>> Torvalds' >>>>>> git (3.18.0.-rc5) possibly with some earlier versions..." >>>>>> >>>>>> >>>>>> 1. [ 1.735879] ata1: SATA link up 3.0 Gbps (SStatus 123 >>>>>> SControl >>>>>> 300) >>>>>> 2. [ 1.742372] ata1.15: Port Multiplier 1.2, 0x197b:0x0325 r0, >>>>>> 5 >>>>>> ports, feat 0x5/0xf >>>>>> >>>>>> >>>>>> >>>>>> But apparently it's very slow ...although no figures given. Guess >>>>>> there >>>>>> is also the fear of data corruption given the lack of uptake/testing >>>>>> of >>>>>> AllWinner PMP >>>>>> >>>>>> >>>>>> Bruce >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Monday, 5 May 2014 22:22:48 UTC+1, hase nase wrote: >>>>>> >>>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> is it possible to use an sata multiplier with a A20 ? I tried it on a >>>>>>> cubieboard, but i only got access to sda and no other connected drive >>>>>>> >>>>>>> -- >>>>>> >>>>> You received this message because you are subscribed to the Google >>>>> Groups >>>>> "linux-sunxi" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an >>>>> email to linux-sunxi...@googlegroups.com <javascript:>. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> >>>> >>>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "linux-sunxi" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to linux-sunxi+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. 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