Re: Samba/FTP slow write fast read

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Author: JD Austin
Date:  
To: Main PLUG discussion list
Subject: Re: Samba/FTP slow write fast read
I second the Proxmox VE recommendation; expecially if you use the virtio
drivers.
http://www.linux-kvm.org/page/WindowsGuestDrivers/Download_Drivers
If you must have USB support then go with Virtualbox though.


On Wed, Oct 31, 2012 at 4:38 PM, Eric Shubert <> wrote:

> While I still have a couple hosts running VMWare Server 2.0.2 on CentOS
> 5.x, I've given up that ship. I think you're walking on thin ice running
> VMWare Server 2 on just about anything these days, especially Windoze. I
> doubt you'll find much help solving any problems with Server 2, given that
> VMWare has dropped it as I expect most users have also by now.
>
> I highly recommend running Proxmox VE as a virtualization host platform.
> It's similar to VMware Server in many ways, but I've found it even easier
> to use. While it requires a cpu that supports virtualization, that's not so
> hard to find these days.
>
> We're beginning to document the process of building a Tagcose server based
> on PVE. See http://tagcose.com for details. We meet monthly at UAT (2nd
> Sat) to work on Tagcose development. You're welcome to join us if you'd
> like.
>
> --
> -Eric 'shubes'
>
>
>
>
> On 10/28/2012 01:13 PM, George Toft 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 <
>>> <mailto:george@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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>>
>>
>>
>>
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