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Thread: Need 'tweaking' for AT&T 1536/384 please!

  1. #1
    Junior Member
    Join Date
    Mar 2009
    Posts
    3

    Arrow Need 'tweaking' for AT&T 1536/384 please!

    Can someone please optimize my settings, System + connection info + TCP Analyzer results below.

    Thanks.


    -XP Pro (sp3)

    -Direct DSL connection (AT&T- 1536K down; 384K up)

    -modem: Speedstream 4100

    -browsers: IE7 + Chrome

    -----------------------------------------------
    SpeedGuide.net TCP Analyzer Results
    Tested on: 03.17.2009 00:11
    IP address: 71.158.xx.xx
    Client OS: Windows XP

    TCP options string: 020405ac01010402
    MSS: 1452
    MTU: 1492
    TCP Window: 65535 (NOT multiple of MSS)
    RWIN Scaling: 0 bits
    Unscaled RWIN : 65535
    Recommended RWINs: 63888, 127776, 255552, 511104, 1022208
    BDP limit (200ms): 2621kbps (328KBytes/s)
    BDP limit (500ms): 1049kbps (131KBytes/s)
    MTU Discovery: ON
    TTL: 111
    Timestamps: OFF
    SACKs: ON
    IP ToS: 00000000 (0)

  2. #2
    SG Enthusiast Rollingstone's Avatar
    Join Date
    Jan 2008
    Location
    HoChiMinh, Vietnam
    Posts
    3,161
    Try the following with TCP Optimizer:

    General Settings tab:
    Custom settings - check
    Modify All Network Adapters - check
    network adapter selection - your NIC
    MTU - 1492
    TTL - 64
    Windows Scaling - uncheck
    TCP Receive Window - 63888
    MTU Discovery - Yes
    Black Hole Detect - No
    Selective Acks - Yes
    Max Duplicate ACKs - 2
    TCP 1323 Options:
    Timestamps - uncheck

    Advanced Settings tab:
    Max Connections per Server - 10
    Max Connections per 1.0 Server - 10
    LocalPriority - 5
    Host Priority - 6
    DNSPriority - 7
    NetbtPriority - 8
    Lan Browsing speedup - optimized
    QoS: NonBestEffortLimit - 0
    ToS: DisableUserTOSSetting - 0
    ToS: DefaultTOSValue - 80
    MaxNegativeCacheTtl - 0
    NetFailureCacheTime - 0
    NegativeSOACache Time - 0
    LAN Request Buffer Size - 32768
    Firefox Extreme Speed Edition

    What makes you: "...waking up in the morning so excited about & wanna FLY out of the door ?"

  3. #3
    Elite Member trogers's Avatar
    Join Date
    Jan 2005
    Location
    Bangkok, Thailand
    Posts
    12,323
    I may lower RWIN to 31944 for a 1.5MB line in the US.
    "Contentment is not the fulfillment of what you want, but is the realisation of how much you already have" - anon

  4. #4
    Junior Member
    Join Date
    Mar 2009
    Posts
    3
    Here's my new analyzer test results. Any other "tweaking"/changes required....or is this fully optimized for my connection?

    Thanks.
    ------------------------------------------

    SpeedGuide.net TCP Analyzer Results
    Tested on: 03.24.2009 03:41
    IP address: 71.156.xx.xxx
    Client OS: Windows XP

    TCP options string: 020405ac01010402
    MSS: 1452
    MTU: 1492
    TCP Window: 31944 (multiple of MSS)
    RWIN Scaling: 0 bits
    Unscaled RWIN : 31944
    Recommended RWINs: 63888, 127776, 255552, 511104, 1022208
    BDP limit (200ms): 1278kbps (160KBytes/s)
    BDP limit (500ms): 511kbps (64KBytes/s)
    MTU Discovery: ON
    TTL: 47
    Timestamps: OFF
    SACKs: ON
    IP ToS: 01000000 (64)
    Precedence: 010 (immediate)
    Delay: 0 (normal delay)
    Throughput: 0 (normal throughput)
    Reliability: 0 (normal reliability)
    Cost: 0 (normal cost)
    Check bit: 0 (correct)
    DiffServ: CS2 010000 (16) - class 2 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

  5. #5
    SG Enthusiast Rollingstone's Avatar
    Join Date
    Jan 2008
    Location
    HoChiMinh, Vietnam
    Posts
    3,161
    The TCP Settings are correct !
    Firefox Extreme Speed Edition

    What makes you: "...waking up in the morning so excited about & wanna FLY out of the door ?"

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