[Samba] Re: Am I getting the best performance?

[aragonx]

John H Terpstra <jht at samba.org> wrote in
news:Pine.LNX.4.50.0303141847330.5995-100000 at dp.samba.org: 

> On Fri, 14 Mar 2003, Me wrote:
> 
>> > Did you check the impact of increasinf the SO_RECVBUF and SO_SNDBUF
>> > to 128KByte?
>>
>> No I have not.  I will try it though.  I have 512MB of RAM in my
>> server so I'm not too worried about memory.
> 
> Let me know what you find.

Okay, here is a list of my recient test results.  If you want more, just 
let me know.

Date	Source	Destination	Amount of Data in megabytes	Time in 
seconds	Speed of Xfer in mb/min	Speed of Xfer in MB/sec

Used speedtest.tar.bz2.							
3/17/03	/dev/hdd	wyonker	1972.375	328 	360.80 	6.01	

I did an ftp transfer as a baseline test.  Booted to my Linux 
partition.							
3/17/03	/dev/hdc	wyonker	1972.375		632.40 	10.54	

Used speedtest.tar.bz2							
3/17/03	/dev/hdc	nyonker	1972.375	268 	441.58 	7.36	

Another FTP transfer						
3/17/03	/dev/hdc	nyonker	1972.375	199 	606.50 	10.11

Used speedtest.tar.bz2.  Changed to socket options = TCP_NODELAY 
SO_RCVBUF=131072 SO_SNDBUF=131072						
3/17/03	/dev/hdc	nyonker	1972.375	263 	449.97 	7.50
						
Used directory Changed to socket options = TCP_NODELAY SO_RCVBUF=131072 
SO_SNDBUF=131072						
3/17/03	/dev/hdc	nyonker	2,026 	288 	422.04 	7.03

Used speedtest.tar.bz2.  Changed to socket options = TCP_NODELAY 
IPTOS_LOWDELAY SO_RCVBUF=8192 
SO_SNDBUF=8192						
3/17/03	/dev/hdc	nyonker	2,026 	277 	438.80 	7.31

Used speedtest directory.  Changed to socket options = TCP_NODELAY 
IPTOS_LOWDELAY SO_RCVBUF=8192 
SO_SNDBUF=8192						
3/17/03	/dev/hdc	nyonker	2,026 	286 	424.99 	7.08



7.5MB/sec doesn't seem too bad.  But I still think I can do better.  I may 
lower my standards a little.  If I can get to 8 or 8.5MB/sec I'll be happy.  
I still think I should be able to do 9MB/sec.  FTP can do 10.5MB/sec.  Does 
Samba really have 30% more overhead than FTP? 

File locking and such are not issues since I've been doing test with both 
directories of files and one big zip.

Any other suggestions would be much appreicated.