[Samba] Slow perfomance comparing Win NT 4.0 server
Hello! I've replaced the old Windows NT 4.0 server with new modern (Core 2 DUO 2.4Ghz with 1GB RAM, SATA drives in linux software RAID 1 under CentOS 5, Samba 3.3.0-38) But client started to complain that the speed was slowed down. I made some tests with old and new servers and see that working with files is really slow. Office and pdf documents opening sometimes up to minute comparing 1-2 second from old server. Please point me to the right way to catch the problem hdparm shows good numbers: /dev/md0: Timing buffered disk reads: 182 MB in 3.01 seconds = 60.48 MB/sec /dev/md0: Timing cached reads: 4528 MB in 2.00 seconds = 2265.41 MB/sec smb.conf: #=== Global Settings = [global] workgroup = CORP server string = MASTER Fileserver netbios name = master ; interfaces = lo eth0 192.168.12.2/24 192.168.13.2/24 ; hosts allow = 127. 192.168.12. 192.168.13. # --- Logging Options - # logs split per machine log file = /var/log/samba/%m.log # max 50KB per log file, then rotate max log size = 250 socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 # --- Domain Controller Options # security = user passdb backend = tdbsam domain master = yes domain logons = yes # the login script name depends on the machine name ; logon script = %m.bat # the login script name depends on the unix user used logon script = %u.bat ; logon path = \\%L\Profiles\%u # disables profiles support by specifing an empty path logon path = add user script = /usr/sbin/useradd %u -n -g users add group script = /usr/sbin/groupadd %g add machine script = /usr/sbin/useradd -n -c Workstation (%u) -M -d /nohome -s /bin/false %u delete user script = /usr/sbin/userdel %u delete user from group script = /usr/sbin/userdel %u %g delete group script = /usr/sbin/groupdel %g # --- Browser Control Options local master = yes os level = 65 preferred master = yes #- Name Resolution --- wins support = yes #; wins server = 192.168.0.10 #; wins proxy = yes #; dns proxy = yes # --- Printing Options - load printers = yes cups options = raw ; printcap name = /etc/printcap #obtain list of printers automatically on SystemV ; printcap name = lpstat ; printing = cups # --- Filesystem Options --- # ; map archive = no ; map hidden = no ; map read only = no ; map system = no ; store dos attributes = yes # Share Definitions == [homes] comment = Home Directories browseable = no writable = yes valid users = %S valid users = MYDOMAIN\%S # Un-comment the following and create the netlogon directory for Domain Logons [netlogon] comment = Network Logon Service path = /var/lib/samba/netlogon guest ok = yes writable = no share modes = no # Un-comment the following to provide a specific roving profile share # the default is to use the user's home directory ; [Profiles] ; path = /var/lib/samba/profiles ; browseable = no ; guest ok = yes [Documents] path=/home/shares/Documents comment=Documents writeable=yes browseable=yes create mode=0660 directory mode=0770 [Invoices] path=/home/shares/Invoices comment=Invoices writeable=yes browseable=yes create mode=0660 directory mode=0770 valid users = igor,larisa,sergei1 [Shared] path=/home/shares/Shared comment=Shared Files writeable=yes browseable=yes create mode=0660 directory mode=0770 [Source] path=/home/shares/Source comment=Software source writeable=yes browseable=yes create mode=0660 directory mode=0770 -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
Re: [Samba] Slow perfomance comparing Win NT 4.0 server
On Fri, Jul 17, 2009 at 12:06:52AM +0300, Georgy Goshin wrote: Hello! I've replaced the old Windows NT 4.0 server with new modern (Core 2 DUO 2.4Ghz with 1GB RAM, SATA drives in linux software RAID 1 under CentOS 5, Samba 3.3.0-38) But client started to complain that the speed was slowed down. I made some tests with old and new servers and see that working with files is really slow. Office and pdf documents opening sometimes up to minute comparing 1-2 second from old server. Please point me to the right way to catch the problem hdparm shows good numbers: /dev/md0: Timing buffered disk reads: 182 MB in 3.01 seconds = 60.48 MB/sec /dev/md0: Timing cached reads: 4528 MB in 2.00 seconds = 2265.41 MB/sec This is not needed (and may be harmful) socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 But this won't make a difference between 1-2 seconds and one minute. Is it slow to initially connect to the share ? If so I'd suspect DNS lookups. If it's slow accessing the share but fast to connect I'd get a wireshark capture trace and looks for timestamp gaps in the packet stream. That should give a clue. You can do the same with a timestamped smbd log at debug level 10 - look for suspicious gaps in activity, as there's some waiting problem that's being triggered here. Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
