Package: samba
Version: 3.0.26a-1

Kernel: 2.6.22

samba 3.0.26a-1 performance < 900 KiB/s, but FTP = 30-90 MiB/s

Let me start out by saing this is an oddball problem:

SAMBA:
LINUX -> WINDOWS = < 900 KiB/s (varies between 100 - 900 KiB/s)
WINDOWS -> LINUX = 30-90 MiB/s (always)

FTP:
Either direction, 30-90 MiB/s (always)

I do not see any nasty errors in the logs even with verbose = 5.

Any ideas here? I am not using any special options.

# cat /etc/samba/smb.conf

[global]
        log level = 5
        workgroup = WORKGROUP
        server string = %h - Pentium IV 3.4GHZ
        security = user
        encrypt passwords = true

[user]
  comment         = user
  path            = /home/user
  writable        = yes
  valid users     = user
  create mask     = 644

--

Here, FTP for pulling files from Linux.

ftp> mget *
200 TYPE is now 8-bit binary
200 PORT command successful
150-Connecting to port 1255
150 715924.0 kbytes to download
226-File successfully transferred
226 13.687 seconds (measured here), 51.08 Mbytes per second
ftp: 733106176 bytes received in 13.69Seconds 53562.23Kbytes/sec.
200 PORT command successful
150-Connecting to port 1256
150 716272.0 kbytes to download
226-File successfully transferred
226 13.032 seconds (measured here), 53.67 Mbytes per second
ftp: 733462528 bytes received in 13.05Seconds 56216.95Kbytes/sec.
200 PORT command successful
150-Connecting to port 1257
150 713200.0 kbytes to download
226-File successfully transferred
226 12.869 seconds (measured here), 54.12 Mbytes per second
ftp: 730316800 bytes received in 12.88Seconds 56723.63Kbytes/sec.

Here, FTP for pushing files to Linux.

ftp> mput 1 2 3
200 PORT command successful
150 Connecting to port 1263
226-File successfully transferred
226 12.802 seconds (measured here), 54.61 Mbytes per second
ftp: 733106176 bytes sent in 12.80Seconds 57287.35Kbytes/sec.
200 PORT command successful
150 Connecting to port 1264
226-File successfully transferred
226 12.949 seconds (measured here), 54.02 Mbytes per second
ftp: 733462528 bytes sent in 12.95Seconds 56624.92Kbytes/sec.
200 PORT command successful
150 Connecting to port 1265
226-File successfully transferred
226 15.400 seconds (measured here), 45.23 Mbytes per second
ftp: 730316800 bytes sent in 15.38Seconds 47500.28Kbytes/sec.

But (all I can offer is packet dumps/traces or bandwidth measurements):

Incoming:                               Outgoing:
Curr: 0.00 MByte/s                      Curr: 0.07 MByte/s
Avg: 0.00 MByte/s                       Avg: 0.07 MByte/s
Min: 0.00 MByte/s                       Min: 0.07 MByte/s
Max: 0.00 MByte/s                       Max: 0.07 MByte/s
Ttl: 1898.08 MByte                      Ttl: 2954.92 MByte

LOCAL <-> REMOTE                                          TXBPS   RXBPS TOTALBPS
 (IP)              PORT  PROTO  (IP)              PORT       TX      RX    TOTAL
linuxbox <-> p4w.internal.lan          546k/s 4.74k/s 551k/s
192.168.0.1     445    TCP  192.168.0.2    1259    6.88m    106k  6.99m

Why do I get such poor performance when trying to retrieve a file off the Linux 
box?  This is a very strange problem.

Linux:

$ netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0   1500 0  14049682      0      0      0 11354070      0      0      0 BMRU
lo    16436 0     45335      0      0      0    45335      0      0      0 LRU

Windows:

netstat -s

IPv4 Statistics

  Packets Received                   = 5053597
  Received Header Errors             = 0
  Received Address Errors            = 19
  Datagrams Forwarded                = 0
  Unknown Protocols Received         = 0
  Received Packets Discarded         = 2
  Received Packets Delivered         = 5053595
  Output Requests                    = 3655144
  Routing Discards                   = 0
  Discarded Output Packets           = 0
  Output Packet No Route             = 0
  Reassembly Required                = 0
  Reassembly Successful              = 0
  Reassembly Failures                = 0
  Datagrams Successfully Fragmented  = 0
  Datagrams Failing Fragmentation    = 3
  Fragments Created                  = 0

ICMPv4 Statistics

                            Received    Sent
  Messages                  47          24
  Errors                    0           0
  Destination Unreachable   25          2
  Time Exceeded             0           0
  Parameter Problems        0           0
  Source Quenches           0           0
  Redirects                 0           0
  Echos                     0           22
  Echo Replies              22          0
  Timestamps                0           0
  Timestamp Replies         0           0
  Address Masks             0           0
  Address Mask Replies      0           0

TCP Statistics for IPv4

  Active Opens                        = 204
  Passive Opens                       = 14
  Failed Connection Attempts          = 16
  Reset Connections                   = 59
  Current Connections                 = 3
  Segments Received                   = 5051709
  Segments Sent                       = 3654327
  Segments Retransmitted              = 76

UDP Statistics for IPv4

  Datagrams Received    = 1826
  No Ports              = 58
  Receive Errors        = 3
  Datagrams Sent        = 716


Justin.

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