[Samba] Copying (Samba - WinXP SP2) MATLAB generated .jpg files very slow.
Greetings, This is a interesting problem. One of our researchers uses MATLAB to generate jpg files as part of his vision research. When he copies these files from the file server, it is very slow. I tried 3.0.28a and I see the same problem as we have with 3.0.28. Here are some interesting stats. 1) MATLAB generated files: command: robocopy Y:\23_1 C:\23_1 /e dirs: 2 files: 262 bytes: 12.75MB time: 3min 15 seconds 2) Same files resaved with IfranView command: robocopy Y:\23_1b C:\23_1b /e dirs: 2 files: 260 bytes: 22.05MB time: 19 seconds This is only a subset of the files that the user copies. The full directory consists of 8939 files over 101 directories for a total of 402MB and this takes 1 Hr,12 minutes and 5 seconds (Samba 3.0.28 - WinXP SP2) verses 3 minutes 30 seconds for a WinXP SP2 - WinXP SP2 copy. When I write the files back to the same Samba server the results are about the same for the MATLAB and IfranView jpg files. Any suggestions, since this only happens with MATLAB generated files? Thanks == /xsys/pkg/samba-3.0.28/sbin/smbd -b Build environment: Built by:[EMAIL PROTECTED] Built on:Tue Dec 11 09:46:16 EST 2007 Built using: gcc Build host: Linux navy 2.6.9-55.0.2.EL.CSE.smp #1 SMP Wed Jul 11 09:50:28 EDT 2007 i686 i686 i386 GNU/Linux SRCDIR: /tmp/xsys.8289.0/samba-3.0.28/source BUILDDIR:/tmp/xsys.8289.0/samba-3.0.28/source Paths: SBINDIR: /xsys/pkg/samba-3.0.28/sbin BINDIR: /xsys/pkg/samba-3.0.28/bin SWATDIR: /xsys/pkg/samba-3.0.28/swat CONFIGFILE: /xconf/samba/smb.conf LOGFILEBASE: /var/log LMHOSTSFILE: /xconf/samba/lmhosts LIBDIR: /xsys/pkg/samba-3.0.28/lib SHLIBEXT: so LOCKDIR: /var/samba/locks PIDDIR: /var/run SMB_PASSWD_FILE: /var/samba/private/smbpasswd PRIVATE_DIR: /var/samba/private [global] workgroup = CSYORKUCA netbios name = PCSERVER netbios aliases = SILVER server string = CS Samba %v Server interfaces = bind interfaces only = Yes passdb backend = pdb_udb username map = /xconf/samba/usermap client NTLMv2 auth = Yes client lanman auth = No client plaintext auth = No log level = 2 syslog = 0 max log size = 0 debug uid = Yes smb ports = 139 deadtime = 15 hostname lookups = Yes printcap name = /xconf/lprng/printcap logon script = default.bat logon path = logon home = domain logons = Yes os level = 65 preferred master = Yes domain master = Yes wins support = Yes invalid users = root inherit permissions = Yes hosts allow = print command = /xsys/bin/lpr -b -P%p %s ; rm -f %s lpq command = /xsys/bin/lpq -P%p lprm command = /xsys/bin/lprm -P%p %j use client driver = Yes oplocks = No level2 oplocks = No [netlogon] path = /xconf/samba/netlogon [homes] comment = Home Directories valid users = %S read only = No csc policy = disable [printers] comment = All Printers path = /tmp create mask = 0700 printable = Yes browseable = No -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Copying (Samba - WinXP SP2) MATLAB generated .jpg files very slow.
On Tue, Mar 11, 2008 at 12:08:36PM -0400, Paul Griffith wrote: Greetings, This is a interesting problem. One of our researchers uses MATLAB to generate jpg files as part of his vision research. When he copies these files from the file server, it is very slow. I tried 3.0.28a and I see the same problem as we have with 3.0.28. Here are some interesting stats. 1) MATLAB generated files: command: robocopy Y:\23_1 C:\23_1 /e dirs: 2 files: 262 bytes: 12.75MB time: 3min 15 seconds 2) Same files resaved with IfranView command: robocopy Y:\23_1b C:\23_1b /e dirs: 2 files: 260 bytes: 22.05MB time: 19 seconds This is only a subset of the files that the user copies. The full directory consists of 8939 files over 101 directories for a total of 402MB and this takes 1 Hr,12 minutes and 5 seconds (Samba 3.0.28 - WinXP SP2) verses 3 minutes 30 seconds for a WinXP SP2 - WinXP SP2 copy. When I write the files back to the same Samba server the results are about the same for the MATLAB and IfranView jpg files. Any suggestions, since this only happens with MATLAB generated files? Does MATLAB add any stream metadata to the files ? robocopy may be doing something dumb with files with associated streams. Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
