Samba/FTP slow write fast read

[Michael Havens]

you got demons in your box!
:-)~MIKE~(-:


On Sun, Oct 28, 2012 at 1:13 PM, George Toft <george at georgetoft.com> wrote:

>  Continuing saga . . .
> SMB and FTP from another physical to this virtual run at full speed.  SMB
> from every Win7 box except this one runs at full speed.  The communications
> bog down only for SMB/FTP on the physical host to the VM.  Next step is to
> build a dedicated VMware host.  I probably should have done that to begin
> with, but was trying to cut down on the number of physical systems running.
>
> Regards,
>
> George Toft
>
> On 10/28/2012 7:13 AM, Michael Havens wrote:
>
> thanks for the update!
> :-)~MIKE~(-:
>
>
> On Sat, Oct 27, 2012 at 10:07 PM, George Toft <george at georgetoft.com>wrote:
>
>> Further investigation shows it's not FTP nor samba.  It's Windows 7
>> (which I used for Windows file and FTP).  Using smbclient on a Linux box I
>> get 19MB/sec and FTP from Linux I get 32MB/sec.  Concurrent with replacing
>> the old file server was the purchase of a new PC.  I guess we know what XP
>> does better than Windows 7.
>>
>> Regards,
>>
>> George Toft
>>
>> On 10/27/2012 6:01 PM, George Toft wrote:
>>
>>> Spent several hours researching this one - can't find a solution.  I
>>> hope someone here can hit me with a clue-by-four.
>>>
>>> CentOS 6.3 64-bit virtual running under VMware 2.0.2 fresh install with
>>> FTP/Samba/NFS running.  I copied 500+GB of data from the old computer to
>>> the new one using NFS at full network speed (11+ MB/sec).  Life's good.
>>>
>>> Now here it is a day later, and my samba write speed is a blazing
>>> 80KB/sec (up from 40KB/s when I started troubleshooting).  I read samba
>>> should approach FTP speed and I verified it does - FTP writes to the new
>>> machine at about the same speed.  Reads still take place a full speed (now
>>> it's on a 1Gbps network) - 33MB/sec. Writes . . . 99.8% slower.  I did not
>>> have this problem on the previous samba server (CentOS 4.8 32-bit).
>>>
>>> I added memory (it now has 1GB RAM, 1 GB swap) and it has 2 CPU's. This
>>> had no effect.
>>>
>>> In summary, NFS works at full speed both ways.  Samba/FTP are fast on
>>> reads but snail slow on writes.
>>>
>>> My next thought is to install ClearOS, test it, and copy their smb.conf.
>>>  Or install CentOS 5.x and see if it has the same problems.
>>>
>>> Any ideas where to look on this one?  smb.conf necessary.
>>>
>>>
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