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digrouz
Tux's lil' helper
Joined: 19 Feb 2005
Posts: 124
Location: Mouscron, Belgium
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 Posted: Wed Jan 25, 2012 12:16 pm Post subject: samba read performances |
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Hello,
I've a nas server installed with gentoo. I've good performances in ftp (read and write) and in write with samba. What I feel strange, is that I've less performances with samba in read (about half of the write speed).
It's something like that:
ftp read: 100Mo/s
ftp write: 100Mo/s
Samba write: 95 Mo/s
Samba read: 45Mo/s
I did the test several times with files of about 2Go and I got all the time nearly the same results.
How to explain that? and also how to improve that read speed?
Here is my smb.conf:
| Code: |
[global]
workgroup = USERSHARE
server string = Samba Server %v
printcap name = /dev/null
load printers = no
printable = no
printing = bsd
interfaces = lo eth0
bind interfaces only = yes
hosts allow = 127.0.0.1 192.168.0.0/24
hosts deny = 0.0.0.0/0
netbios name = SMBSRV
security= share
guest ok = yes
log file = /var/log/samba/log.%m
log level= 1
max log size = 50
local master = no
dos charset = CP850
unix charset = UTF-8
display charset = UTF-8
aio read size = 65536
aio write size = 65536
aio write behind = true
socket options = SO_KEEPALIVE TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
min receivefile size = 131072
max protocol = smb2
use sendfile = yes
preferred master = yes
strict sync = no
sync always = no
[usershare]
comment = shared folder
path = /mnt/data
valid users = myuser
guest ok = no
browseable = yes
writable = yes
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There are 10 types of people in the world: those who understand binary, and those who don't. |
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enihcam
n00b
Joined: 09 Dec 2011
Posts: 8
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| Posted: Thu Aug 22, 2013 5:15 am Post subject: Re: samba read performances |
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Change
| Code: |
socket options = SO_KEEPALIVE TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
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to
| Code: |
socket options = SO_KEEPALIVE TCP_CORK IPTOS_THROUGHPUT
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1. 'TCP_NODELAY IPTOS_LOWDELAY' only benefits interactive console, e.g. telnet.
2. Do not use 'SO_RCVBUF/SO_SNDBUF', so linux kernel can automatically adjust them to the best values.
3. sendfile() always befriends with TCP_CORK, whereas it with TCP_NODELAY is a nightmare. |
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enihcam
n00b
Joined: 09 Dec 2011
Posts: 8
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| Posted: Sat Aug 24, 2013 1:58 am Post subject: Re: samba read performances |
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| enihcam wrote: | Change
| Code: |
socket options = SO_KEEPALIVE TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
|
to
| Code: |
socket options = SO_KEEPALIVE TCP_CORK IPTOS_THROUGHPUT
|
1. 'TCP_NODELAY IPTOS_LOWDELAY' only benefits interactive console, e.g. telnet.
2. Do not use 'SO_RCVBUF/SO_SNDBUF', so linux kernel can automatically adjust them to the best values.
3. sendfile() always befriends with TCP_CORK, whereas it with TCP_NODELAY is a nightmare. |
Sorry, I forgot to mention:
Before enable TCP_CORK, in 'static const smb_socket_option socket_options[]'@/lib/util/util_net.c you need to add:
"
{"TCP_CORK", IPPROTO_TCP, TCP_CORK, 0, OPT_BOOL},
" |
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Networking & Security
