RT-N66U and NAS samba share performance

Discussion in 'Tomato Firmware' started by Bruza, Mar 15, 2012.

  1. Bruza

    Bruza Networkin' Nut Member

    Hi, i recently purchased an Asus RT-N66U, and installed Shibby 1.28.0000 MIPSR2-085V K26 USB AIO firmware.
    I have a 2TB usb 2.0 external drive from Seagate formatted in ext3 and mounted on the router.
    With QoS disabled i am getting about 800KBps read, which seems pretty slow. Status looks like this while copying a file from the share to a local windows box:

    Model Asus RT-N66U
    Chipset Broadcom BCM5300 chip rev 1 pkg 0
    CPU Freq 600MHz
    Flash Size 32MB

    Time Thu, 15 Mar 2012 08:01:59 +0100
    Uptime 0 days, 00:35:11
    CPU Load (1 / 5 / 15 mins) 0.00 / 0.06 / 0.07
    CPU Usage 0.99%
    Total / Free Memory 250.00 MB / 233.09

    My question is, is there anything i could do to improve performance of NAS file share?
  2. shibby20

    shibby20 Network Guru Member

  3. Bruza

    Bruza Networkin' Nut Member

    Ah, thanks for the quick reply and link, this is very possibly the problem. I am using exact same usb hard disk as the guy in the link also. I'll check it out and report back =)
  4. Bruza

    Bruza Networkin' Nut Member

    I checked out the usb settings, they were correctly set at 2.0.
    Turns out that the slow read and write are when i am using the wireless. I hooked up a windows box over a wired LAN and i am getting about 13MB/s write over samba off that HD.
    The PCs connected over wireless (5ghz, haven't tried 2.4) drop down to 300-1000kbytes/sec speeds. Do you think it's some vlan/nat configuration problem? I have QoS off and i haven't messed with MTUs or anything like that. My PC is showing a 5bar 135mbit connection over "n" protocol.
  5. shibby20

    shibby20 Network Guru Member

    well all is clear. I tested over Gigabit Ethernet :)

    change 5GHz wileress sideband from 40MHz to 20MHz and re-check.

    Over 5GHz/40MHz (with USB-N53 wireless card) i hav read 6,2MB/s, write 6,7MB/s
  6. Bruza

    Bruza Networkin' Nut Member

    I brought it down to 20mhz, and the speeds did improve to 3-4MB/sec... Sounded like you know whats going on, do you have an explanation why 40mhz is so slow?
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