Hi,
I tried upgrading from my Samba 3 setup to Samba 4.1.6 - I do not need all
those AD-Features, I just need to mount the shares on two Windows 7 systems.
Nothing more or less - this is the only feature I need.
I use the same configuration that I used with Samba 3 (testparm says it
is fine).
The simple question is - why do I reach transfer rates of ~110MB/Sec with
Samba 3 and only ~45 MB/Sec with Samba 4? With such a mega-drop in
performance Samba 4 seems not to be an alternative for me? :( :(
I wonder what I could have done wrong? I'm running Samba 3 and 4 in
seperate FreeBSD 10 jails identically configured. The shared filesystem
is nullfs mounted into each jail. The Filesystem on the jails Host is a
ZFS raidz. Bonnie++ can write to it with ~150MB/Sec. I tried following
configure switches so far:
- with and without aio support
- with or without debug symbols in the compiled binaries (had it on by
default)
- with or without pthreadpool
all made no difference so far.
During copying an 18GB file, the top output looks like:
Samba 4.1:
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
16525 root 2 21 0 289M 17412K kqread 5 0:34 101.66% smbd
Samba 3.6:
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
78738 root 1 91 0 60792K 5200K CPU6 6 0:51 64.16% smbd
My config is:
[code]
[global]
workgroup = MYWORKGROUP
server string = jasmin
passdb backend = tdbsam:/usr/local/etc/samba/passdb.tdb
log file = /var/log/samba4/log.%m
max log size = 50
unix extensions = No
load printers = No
dns proxy = No
hosts allow = 10.0.1.51, 10.0.1.52, 10.0.1.53, 10.0.2.51
[usera]
comment = usera
path = /mnt/users/usera
valid users = usera
read only = No
[userb]
comment = userb
path = /mnt/users/userb
valid users = userb
read only = No
wide links = Yes
[public]
comment = public
path = /mnt/users/public
force user = userb
read only = No
wide links = Yes
[/code]
Samba 4.1.6 was configured with:
/usr/obj/ports/usr/ports/net/samba41/work/samba-4.1.6/buildtools/bin/waf
--prefix=/usr/local --exec-prefix=/usr/local --mandir=/usr/local/man
--sysconfdir=/usr/local/etc --includedir=/usr/local/include/samba4
--datadir=/usr/local/share/samba41 --libdir=/usr/local/lib
--with-pammodulesdir=/usr/local/lib
--with-privatelibdir=/usr/local/lib/samba
--with-modulesdir=/usr/local/lib/shared-modules
--with-pkgconfigdir=/usr/local/libdata/pkgconfig --localstatedir=/var
--with-piddir=/var/run/samba4 --with-sockets-dir=/var/run/samba4
--with-privileged-socket-dir=/var/run/samba4
--with-lockdir=/var/db/samba4 --with-statedir=/var/db/samba4
--with-cachedir=/var/db/samba4 --with-privatedir=/var/db/samba4/private
--with-logfilebase=/var/log/samba4 --with-pam --with-iconv
--with-winbind --without-gettext --with-sendfile-support
--builtin-libraries=smbclient --verbose --enable-debug
--without-acl-support --without-aio-support --disable-avahi
--disable-dnssd --disable-cups --disable-iprint --without-dnsupdate
--without-fam --with-pam_smbpass --enable-pthreadpool
--without-quotas --with-syslog --without-utmp --without-ads
--without-ldap --bundled-libraries=!talloc,!tevent,!tdb,!ldb,com_err
--jobs=8 configure
On Thu, Apr 17, 2014 at 02:03:37AM +0200, Oliver Lehmann wrote:> Hi, > > I tried upgrading from my Samba 3 setup to Samba 4.1.6 - I do not need all > those AD-Features, I just need to mount the shares on two Windows 7 systems. > Nothing more or less - this is the only feature I need. > > I use the same configuration that I used with Samba 3 (testparm says it > is fine). > > The simple question is - why do I reach transfer rates of ~110MB/Sec with > Samba 3 and only ~45 MB/Sec with Samba 4? With such a mega-drop in > performance Samba 4 seems not to be an alternative for me? :( :(What is your test case? Can you post more details? A few seconds worth of tcpdump might show a bit more. Volker -- SerNet GmbH, Bahnhofsallee 1b, 37081 G?ttingen phone: +49-551-370000-0, fax: +49-551-370000-9 AG G?ttingen, HRB 2816, GF: Dr. Johannes Loxen http://www.sernet.de, mailto:kontakt at sernet.de