Samba server performance -- only 33MiB/s with one client on 1G network!

[Lev Serebryakov]

Hello, Mark.
You wrote 9 июля 2013 г., 20:41:31:

MS>   What can you tell us about the system tunings. Can you post a copy of your
 I need to note, that system as tuned for (a) maximum local read/write speed
 and (b) maximum TCP throughput in local network, as seen by "iperf".

    Results of these separate tunings could be seen in very first message in
 this thread (280MiB/s sustained local read from FS and 820Mbit/s of TCP
 throughput to client in question).

MS> 1. sysctl.conf
net.inet.tcp.recvbuf_auto=1
net.inet.tcp.recvbuf_inc=131072
net.inet.tcp.recvbuf_max=1048576
net.inet.tcp.sendbuf_auto=1
net.inet.tcp.sendbuf_inc=131072
net.inet.tcp.sendbuf_max=1048576
net.inet.tcp.maxtcptw=102400
net.inet.tcp.mssdflt=8800
net.inet.tcp.recvspace=262144
net.inet.tcp.sendspace=262144
kern.ipc.nmbclusters=204800
kern.ipc.nmbjumbop=192000
kern.ipc.maxsockbuf=2097152
net.inet.ip.intr_queue_maxlen=8192
vfs.read_max=32

MS> 2. loader.conf
hw.em.rxd=4096
hw.em.txd=4096
net.link.ifqmaxlen=16384

MS> 3. smb.conf
 Attached

MS> 4. /etc/fstab
# Device                Mountpoint      FStype  Options         Dump    Pass#
/dev/label/swap         none            swap    sw              0       0
/dev/ufs/root           /               ufs     rw              1       1
/dev/ufs/tmp            /tmp            ufs     rw              2       2
/dev/ufs/usr            /usr            ufs     rw              2       2
/dev/ufs/var            /var            ufs     rw              2       2
/dev/raid5/storage      /usr/home       ufs     rw              2       2
linproc                 /compat/linux/proc      linprocfs       rw      0       0
/usr/home               /backup/home    nullfs  rw              0       0

 FS in question is "/usr/home" (exported as "storage" SMB share).

MS> Also the output from
MS> 1. pciconf -lv
  attached.

MS> 2. dmidecode
dmidecode
MS> 3. ifconfig
ifconfig -v em0
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
        ether 00:1e:8c:75:03:0d
        inet 192.168.134.2 netmask 0xffffff00 broadcast 192.168.134.255
        inet6 fe80::21e:8cff:fe75:30d%em0 prefixlen 64 scopeid 0x1
        inet6 2001:470:923f:1:21e:8cff:fe75:30d prefixlen 64 autoconf
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
        media: Ethernet 1000baseT <full-duplex>
        status: active

MS> 4. mount
/dev/ufs/root on / (ufs, local, soft-updates)
devfs on /dev (devfs, local)
/dev/ufs/tmp on /tmp (ufs, local, journaled soft-updates)
/dev/ufs/usr on /usr (ufs, NFS exported, local, journaled soft-updates)
/dev/ufs/var on /var (ufs, local, journaled soft-updates)
/dev/raid5/storage on /usr/home (ufs, NFS exported, local, journaled soft-updates)
linprocfs on /usr/local/linux/proc (linprocfs, local)
/usr/home on /backup/home (nullfs, local)



-- 
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>
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