#246 very low transfer rate

v0.685b
closed
nobody
Others (142)
5
2012-10-28
2007-09-11
neox21
No

Hallo,

I have the freenas 0.685b2 on the following machine:

CPU: AMD Athlon XP 1800+ @1533 MHZ
RAM: 1536 MB DDR RAM

HDDs: 4 x Samsung Spinpoint HD501LJ SATA in RAID5
LAN: D-LINK DGE-530T 10/100/1000 MBIT
S-ATA Controller: Promise S-ATA 300 TX4

My Problem is that I have a very low transfer rate, when I send data to the freenas (civs). I send data with 8-12 MB/s. My collegue has 20 MB/s and more.

My workstation is a DELL Dual Core PC with 2 GB RAM and Gigabit-Lan. The switch is Gigabit, too. In the network options in freenas the Lan is configured with 1000 MBIT TX.

The loglevel in CIVS is set to "minimum".

What can I do to have a higher transfer rate?

I wanted upgrade to the latest firmware 0.686 but I get the message "this image isn't applicable for this platform".

thanks for devoting my problems

Discussion

  • Volker

    Volker - 2007-09-12

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    Hi,
    did you have installed FreeNAS as embedded or full install? I assume you've an full install, otherwise you should be able to upgrade the firmware. So, if you do not need additional software to be installed use the embedded version, this seems to be much more stable.
    About your other problem. Try to increase the MTU to 3000 or 9000 if your Switch supports 'Jumbo Frames', also duplex to full-duplex. Another tipp is to enable kernel tuning (System/Advanced menu). Simply have a look on the bottom of the SMB/CIFS page, there is a list of tipps. Also try the 'Large read/write' on the SMB/CIFS page.

    Greetings
    Volker

     
  • neox21

    neox21 - 2007-09-12

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    First of all thanks for your help Volker.
    I installed the freenas in the full-install version. I will install it again in embedded version. Then I take ne latest firmware of course.

    I try to increase the MTU to 3000 and 9000, butit doesn't make a difference in my transfer rate. I also enabled the kernel tuning (System/Advanced menu) and try the tipps bottom of the SMB/CIFS page and set the 'Large read/write' on the SMB/CIFS page.

    But sadly all of these tips don't push my transfer rate.

    Do you have other solutions/tips?

     
  • Volker

    Volker - 2007-09-12

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    Hmmm, that's not good news. If you enable Jumbo Frames you have to set the MTU on Windows too. You can use a tool like DFUTweaker or some similar tool.
    Right at the moment i did not have any more suggestion. I only can say that the max. transfer rate is absolutely hardware dependent (my opinion and experience). Maybe the transfer rate is restricted by your NIC, i have really good experiences using Intel Pro/1000 GT Desktop.

    Greetings
    Volker

     
  • DragonX

    DragonX - 2007-11-30

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    I've noticed this on my machine as well, when I transfer many "small" (a few MB) files.

    When I try to transfer some large (700MB) files, I get rates of up to 40MB/s. Could be that the samba server just doesn't handle many transactions very quickly.

     
  • eSpy

    eSpy - 2008-01-14

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    I got the same controller and compareable transfer rates (well I just got an 100MB Network running here so I dont know the rates with GB NICs). Perhaps the Promise Controller is extremely slow... ever tried another one?

    Cheers,
    Gerrit

     
  • Volker

    Volker - 2008-06-04

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    Bugtracker cleanup. Please open a new BR for latest stable build (0.686.4) or beta (0.69) if necessary.

     

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