On Thu, Jun 21, 2012 at 2:19 PM, Bartek Krawczyk <bbartlomiej.m...@gmail.com> wrote: > 2012/6/21 Muhammad Yousuf Khan <sir...@gmail.com>: >> i am using bw-ng however i am actually learning these stats from "scp" >> copy command and secondly from samba when i try to download some huge >> files from samba to windows host. my network graph bumps up n down b/w >> 200 to 300 Mbps. > > scp is a bad idea - think about all the encryption which significantly > decreases the throughput. > Read about tuning Linux network stack with sysctl. It will help in > case of samba. > > net.core.rmem_max = 16777216 > net.core.wmem_max = 16777216 > net.ipv4.tcp_rmem = 4096 87380 16777216 > net.ipv4.tcp_wmem = 4096 65536 16777216 > net.ipv4.tcp_window_scaling = 1 > net.ipv4.tcp_timestamps = 1 > net.ipv4.tcp_sack = 1 > net.ipv4.tcp_rfc1337 = 1 > >> strange........... just 600mbps out of that strong system. > > You seem to miss the fact that in bandwidth tests the other end of the > connection is also important and in my case it was: >>> 2 - Atom D525, 2GB ram, CF card, realtek 1Gb ethernet card
agreed, but my virtualization system is 4 core xeon 2.3 with 8 GB RAM. 500 GB sata RAID 1 so i think hardware will not be a problem > >>> with iperf i get about 600mbps (in UDP mode or with custom TCP window size). > > You need to do some research about high-speed networks and see that > there are many things that need taking care of. > 1. What is the hardware which connects with the one you mentioned? 2 GB core 2 duo 2 (point some thing) Ghz, 300 GB HD > 2. What are the specs of the network between them? Are there any > switches, APs, routers? only 1 switch which is 1 GB supported and linsys switch 48 port manageable L2 switch > 3. Do you use TCP or UDP? standard windows share/samba i think it uses TCP (not sure) > > > -- > Bartek Krawczyk > > > -- > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org > Archive: > http://lists.debian.org/cafp_h4upjthppzw3efc4ked61m_dgqh-pp3ikrgqz-df3+t...@mail.gmail.com > -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAGWVfMkqiy4byTR+n=R352s_t1013tgkqhuTTpfnsNTZq=k...@mail.gmail.com
