AW: [Samba] CIFS & Gigabit Eth - 35MB/sec limit

[Häfliger Peter]

Hy

possible that it is a setting in the registry.
See ftp://ftp.microsoft.com/bussys/winnt/winnt-docs/papers/

I'can't connect to the link (ftp is blockt at our site) but you houl'd see some information. if blockspace from your ehternetcard is less then 9.6 microseconds, you can run in problems.

hope you'll find something

cheers

peter

>>-----Ursprüngliche Nachricht-----
>>Von: Iap, Singuan [mailto:iap_yeh at thecus.com] 
>>Gesendet: Freitag, 24. Juni 2005 18:57
>>An: 'SnowBarsik'; samba at lists.samba.org
>>Betreff: RE: [Samba] CIFS & Gigabit Eth - 35MB/sec limit
>>
>>
>> 
>>I have had played with some similar issue before.
>>I also experienced the same limitation.
>>
>>Then, I tried to copy the same large file with 2 smaba 
>>connections simultaneously. One started from position 0, the 
>>other started from the middle and up to the last bytes. (It's 
>>easy to do that by mounting, opening, seeking, reading, 
>>writing.) The utilization of network bandwidth up to 50%.
>>
>>I also tried to build 3 connections, and make the utilization 
>>up to 75%. But for 4 connections or above, the utilization 
>>can not go up any more (even lower).
>>
>>Iap Singuan
>>
>>--------------------------------------------------------------
>>--------------
>>-----------------
>>
>>
>>Hi honorable people!
>>
>>In self-education purposes only, I would like to ask is 35 
>>Mbytes/sec bandwidth limitation of SMB/CIFS in Gigabit applications?
>>
>>I've try read large file (45GB) from server to client's 
>>dev/nul and don't get bandwidth greater than specified...
>>
>>But, using FTP or NFS I get REAL stable read speed at 80 
>>MB/sec! Same picture in synthetic TCP tests.
>>
>>Why while SMB in use network utilization oscillate around 25% 
>>and nothing more? Is that mean that in 10GbE we get max 
>>utilization in 2-5%?
>>
>>I tested various combination SAMBA server/client, MS 
>>server/client - all for nothing.
>>
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