Packet collision on Samba traffic

Richard Sharpe sharpe at
Fri Apr 6 14:58:49 GMT 2001

At 11:33 PM 4/6/01 +0900, Richard Sharpe wrote:
>At 03:37 PM 4/5/01 -0700, Andrew Tridgell wrote:
>>> How about
>Hmmm, well an SMB style test shows similar results. Samba never fills the
>window, because Win95 uses an SMBreadBraw request with a max size of 4608.
>Samba sends 4 segments, 3 with 1460 bytes, and 1 with 232 bytes. Windows
>Acks and opens the window to 8760.
>However, this time around, it takes Samba/Linux 16 mS to get the first
>segment out in response to the SMBreadBraw, with the subsequent segments
>taking 10 mS to get out the door.

On further examination, I have found cases where Samba/Linux took 2mS to
get the first segment out the door with the subsequent segments taking 1mS
each, so the numbers I quoted above are clearly file system effects.

>>Cheers, Tridge
>Richard Sharpe, sharpe at
>Samba (Team member,, Ethereal (Team member,
>Contributing author, SAMS Teach Yourself Samba in 24 Hours
>Author, Special Edition, Using Samba

Richard Sharpe, sharpe at
Samba (Team member,, Ethereal (Team member,
Contributing author, SAMS Teach Yourself Samba in 24 Hours
Author, Special Edition, Using Samba

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