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AMD Zacate E-350

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  • #21
    I did not say that clearly,

    The drive is dm-crypted. When the server boots it asks the administrator for a password. After Entering it, the drive is unlocked. No samba user nor nfs user even "knows" that his mounted shares are encrypted in any way.

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    • #22
      Originally posted by fritsch View Post
      My E-350 also serves as a fileserver. NFS for the linux clients and samba for the windows world.

      As primary boot medium I use a Solid State Disk with 60GB. The files are stored on a 2TB WD20EARS drive. This drive is fully encrypted using dm-crypt AES XTS and 512 bit chiffre blocks.
      Hi,
      thanks for the input.
      That chip does 512bit AES at 40MBytes/sec? That's very good. 2x better than I was expecting.

      My current setup, with an "AMD Athlon(tm) 64 X2 Dual Core Processor 4200+" and aes-xts-plain 256bits returns this:
      $ sync ; echo 3 > /proc/sys/vm/drop_caches ; dd if=backup117.bin of=/dev/null bs=1M
      233+1 records in
      233+1 records out
      244697088 bytes (245 MB) copied, 2.49109 s, 98.2 MB/s

      IIRC, with 512bit AES this setup did 40MBytes/sec too.

      Originally posted by fritsch View Post
      I could get approx 40MB/s transfered over Ethernet - but it is "that" slow because of the crypto stuff. I think unencrypted you really could get maximum of Gigabit Ethernet.

      I/O performance is quite good - let's wait for UVD3 full support on the other side.
      Let's wait for GPU assisted AES!!!! :-)

      Thanks,

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      • #23
        Just for the record:

        Code:
        root@host:~# cryptsetup status media
        /dev/mapper/media is active:
          cipher:  aes-xts-plain
          keysize: 512 bits
          device:  /dev/sda1
          offset:  4040 sectors
          size:    3907022904 sectors
          mode:    read/write
        Code:
        root@host:~# hdparm -tT /dev/mapper/media
        /dev/mapper/media:
         Timing cached reads:   1642 MB in  2.00 seconds = 820.48 MB/sec
         Timing buffered disk reads:  110 MB in  3.02 seconds =  36.38 MB/sec
        Approx 40MB/s - better 35MB/s ....

        I will retest over network, when the gigabit connection is back.

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        • #24
          Not sure about using hdparm to test luks devices.

          My Athlon outputs this:

          Code:
          # hdparm -tT /dev/mapper/vol1
          
          /dev/mapper/vol1:
           Timing cached reads:   2010 MB in  2.00 seconds = 1005.43 MB/sec
           Timing buffered disk reads:  106 MB in  3.06 seconds =  34.65 MB/sec
          Maybe you can test with some files?
          Thanks,

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          • #25
            Originally posted by fritsch View Post
            When the server boots it asks the administrator for a password. After Entering it, the drive is unlocked. No samba user nor nfs user even "knows" that his mounted shares are encrypted in any way.
            Thank you.

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            • #26
              Standard dd test (from /dev/zero onto the mounted dmcrypt device)

              Code:
              root@host:/media/data/tosort# dd if=/dev/zero of=test1gb.dat bs=1M count=1000
              1000+0 Datensätze ein
              1000+0 Datensätze aus
              1048576000 Bytes (1,0 GB) kopiert, 22,7055 s, 46,2 MB/s
              Copy 1GB File from SSD to dm-crypt ((file not in memory))
              Code:
              root@host:~# time cp test1gb.dat /media/data/tosort/
              
              real	0m31.584s
              user	0m0.060s
              sys	0m6.090s
              
              => 32.4MB/s
              Copy 1GB file from dm-crypt to ssd:
              Code:
              root@host:~# time cp /media/data/tosort/test1gb.dat /home/me/
              
              real	0m28.669s
              user	0m0.060s
              sys	0m6.520
              
              => 35.7MB/s

              It is clear to me, that these measurements are of no statistically relevance (hat to do at least 284 times the same, sum up and build average, with cleaning caches in between) - but the point into the correct direction :-)

              I think one should get reasonable values between 33MB/s and 45MB/s

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              • #27
                I also have just setup my Asus E35M1-M PRO. I installed debian and am running XBMC 10.0. The va-api does do wonders with my blu-ray quality (1080p) content however some lag does occur. I might try some overclocking or something. If anyone has any tips or questions ill be happy to reply.

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                • #28
                  Acceralted Video

                  Does VA-API work out of the box with the latest proprietary drivers and XBMC (stable or built from the latest git?)

                  -Lyle

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                  • #29
                    Originally posted by s0rce View Post
                    Does VA-API work out of the box with the latest proprietary drivers and XBMC (stable or built from the latest git?)

                    -Lyle
                    Well it will work and display video however, there is a bug in version 10 where not enough surfaces are created. This causes some frames to skip back and forth. There is a bug report here that contains a patch. This is currently scheduled to be in release 11.0, but i applied it to 10.1 and video playback is very smooth now. This is a very capable chip. The only downside I find is when your watching blue-ray's and trying to move around the menu's things slow down and the cpu usage jumps up alot. This is to be expected thou and I am confident can be fixed eventually.

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                    • #30
                      Hi all,

                      I just bought this card in the hope of running a NAS + htpc config but so far I have had no luck. I have spent about 30 hours in the last 2 days with no success...

                      I tried Sabayon distribution which gave me the best results: everything working out of the box, but once I updated the system it was no longer working...

                      I am now running debian 6 because this is my every day's OS and feel at ease with it, however I am not a Linux power user.
                      [*]Right now, I am using fglrx drivers 11.3 from ATI website, my desktop is in working in full HD with direct rendering activated. I have black borders, but used the "ugly fix" on my TV settings in order to remove those bars.
                      [*]I don't have any sound, and in alsamixer in only shows the SPDIF "sound card". I wish I could use the sound over HDMI.
                      [*]In XBMC, VAAPI is enabled in the settings but isn't working during playback: huge CPU load and stuff. I compiled and installed splitted desktop version of gstreamer, didn't help.

                      I am totally clueless and willing to give all the command line outputs you want or need to help me.

                      Thanks a lot in advance.

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