Seeking the write speed of samba more than 80 megabytes per second?

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The second day was the wiser, is used to test the null soft raids of 4 and 8 disks, with RAID on RAID flows of up to 300 megabytes per second.

The system is centos 5.5

Tried Samba 3.0 and 3.5 the results are the same.

Looked different optimization, as it is not particularly optimized Samba, neither setting does not affect the speed of casting

For example, such

socket options=SO_RCVBUF=131072 SO_SNDBUF=131072 TCP_NODELAY

Pour in one at a speed of about 80 megabytes per second with windowas machines, when poured into two overall speed is the same and is divided into two fills.

Think about jambarama, but is not always appropriate.


Iron server mother from Supermicro

% i7

operatives 12 GB

Network gigabytes glinkowski the switches

When you fill top looks like this


top — 14:19:39 up 2:27, 1 user, load average: 0.42, 0.33, 0.21

Tasks: 103 total, 1 running, 102 sleeping, 0 stopped, 0 zombie

Cpu0: 0.0%us, 0.0%sy, 0.0% ni,100.0%id, 0.0%wa, 0.0% hi, 0.0% si, 0.0%st

Cpu1: 0.0%us, 0.7%sy, 0.0% ni, 98.3%id, 0.0%wa, 0.7% hi, 0.3% si, 0.0%st

Cpu2: 0.0%us, 0.0%sy, 0.0% ni, 99.3%id, 0.0%wa, 0.3% hi, 0.3% si, 0.0%st

Cpu3: 1.7%us, 6.3%sy, 0.0% ni, 66.0%id, 0.0%wa, 0.0% hi 26.0%si, 0.0%st

Mem: total 12298084k, 12234868k used 63216k free, 424k buffers

Swap: 3899384k total, 300k used, 3899084k free, 11850924k cached


PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND

5215 nobody 15 0 142m 3532 2424 S 0.0 8.7 0:29.24 smbd

385 root 10 -5 0 0 0 S 1.3 0.0 0:33.28 kswapd0

383 root 15 0 0 0 0 S 0.7 0.0 0:22.74 pdflush

3783 root 15 0 90920 3432 2648 S 0.3 0.0 0:sshd 25.99

5223 root 15 0 12744 1092 812 R 0.3 0.0 0:00.01 top

1 root 15 0 10352 704 588 S 0.0 0.0 0:00.71 init

2 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/0

3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0

4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0

5 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/1

6 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1

7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1

8 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/2


There is a chance to increase the speed of casting for Samba?
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5 Answers

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well, 1 GB max 100Мбайт sec + costs 300 meters per second, such equipment will not.
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when agregirovaniya two ports can achieve speeds in the area of 120MB/s(from memory)
when using iscsi sought in the area of 250MB/s.
used freebsd.
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You should test, say, FTP, or even run a network benchmark — if the speed remains the same, will need to look for the issue of a network nature.
\r
If the speed is more or less significantly increase, the problem may lie in windowas car. Then you have to look for answers to the questions:
* If it supports SMB 2.0?
* If not, do you use SMB directly over TCP, or there is an archaic picture "SMB over NetBIOS over TCP/IP"?
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Achieved speed 105 MB/s read liftovogo RAID0 on 2 HDD and 80MB write.
I can say, I rummaged through a pile of material, and with buffers play tried. This speed was achieved under FreeBSD, Samba 3.0 from the ports, with option for Async write (or something like that). In Linux, Samba rested on 60MB/s, while FTP and here and there were doing 110+
Windows 7 client (written in a 3 gig RAMdisk)
Used dumb Gigabit switch ACORP, Jumbo Frames are not supported.
The server is a sempron 2.4 with a gig of memory)) built-in Nforce network card
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the problem is most likely your network hardware. either the network card or switch does not give a fair Gigabit. I have here at home cheap noneymovsky switch is more 50мбайт/h I push him a little and could not.
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