> > Pure HD read speed. > Yes and it's what I want.
> This isn't a copy to RAM. You've created a loop from/to the drive > through the samba server and client. Thus, if you copy from the samba > share to /media, you're reading from the HD and writing to the HD. So > you're getting about 120MB/s aggregate to/from the drive. Linux > buffering is likely pumping this number up a bit. Issue a sync after > the copy command for flush the write to disk and you'll see a more > accurate number. Yes, it's a loop on the same machine but I doesn't copy to the HD. Because my system run in ram. I have one HDD with datas on "/datas" but all other folders are on ram but I have copied that from "/media" (ram) to "/tmp" (ram). ("/media" is the mount on "/datas"). And the file transferred is very big more than 20Gb, I cancel the copy after a moment because not have enough memory for copy all the file. At each time, I have "iotop -o" opened for look the transfer speed from HDD. > Obviously GbE. This low throughput can have a number of causes, most > dealing with network performance, not samba. Yes, it's for that which I try to isolate the cause. Iperf give me very good performance but after when I try with real file, I doesn't have that :( > Are you using jumbo frames? Which NICs? Which GbE switch? Using FTP > client on Windows PC, what is your GET transfer rate from the Samba > machine? If it's less than 80MB/s you may have a network problem. If > it's over 90MB/s you may still have some Samba tuning to do. BTW, > 60MB/s from Samba to Windows over GbE is pretty damn good. Many people > can't get over 35-40MB/s with Windows/GbE and Samba Yes, I have set jumbo frame at 4500 because seem the better value after a lot of test. More bigger frame reduce performance from my test. Ethernet controller : Intel Corporation 82574L Gigabit Network Connection Switch : Netgear GS108T FTP (proftpd) from Samba server to Windows : 105-110Mo/sec (from "/datas" checked with "iotop -o" not FileZilla) Yes 60Mo/s it's not bad, but I would understand why I can't use full bandwidth because all my HDD can sustain ~90-100Mo/s and the network should be OK. > Assuming your future 10GbE network is configured and tuned perfectly, > you'll need a disk that can push over 1,000 MB/s sustained data rate to > fill the 10GbE pipe. This requires either a large striped array of > spinning rust (more than 14 SATA disks in RAID0), or a smaller array of > fast SSDs (4 in a RAID0). Yes I know that this speed is almost unreachable actually but I can't reach 1gbps limit now so 10gbps ... :( I'm almost sure than Samba can use almost full gbps speed but how to enabled that ? :( Thank you for your help ! Jean -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba