The 03.03.17 at 10:51, Marco De Maddalena wrote:
I have a server with SuSE8.1 I have noticed that Linux PCs with old kernel 2.0.x have bad network performance. (92 secs for a PC with 2.0.x against 7 secs for a PC with 2.4.x to copy a 36MB file - same HW)
Instead of transfering a file, where the throughput of the file system is involved, try "bing" instead, that tries to measure directly the network bandwidth. This is a trial run: cer@nimrodel:~> bing nimrodel telperion BING nimrodel.valinor (192.168.100.2) and telperion.valinor (192.168.100.1) 44 and 108 data bytes 1024 bits in 0.000ms 1024 bits in 0.005ms: 204800000bps, 0.000005ms per bit 1024 bits in 0.008ms: 128000000bps, 0.000008ms per bit 1024 bits in 0.017ms: 60235294bps, 0.000017ms per bit 1024 bits in 0.014ms: 73142857bps, 0.000014ms per bit 1024 bits in 0.015ms: 68266667bps, 0.000015ms per bit 1024 bits in 0.016ms: 64000000bps, 0.000016ms per bit ... [stop with ctrl-c] --- nimrodel.valinor statistics --- bytes out in dup loss rtt (ms): min avg max 44 19236 19236 0% 0.030 0.033 0.131 108 19236 19236 0% 0.027 0.029 3.860 --- telperion.valinor statistics --- bytes out in dup loss rtt (ms): min avg max 44 19236 19236 0% 0.211 0.262 71.571 108 19236 19235 0% 0.229 0.267 10.204 --- estimated link characteristics --- warning: rtt big host1 0.027ms < rtt small host2 0.030ms estimated throughput 56888889bps minimum delay per packet 0.169ms (9593 bits) average statistics (experimental) : packet loss: small 0%, big 0%, total 0% warning: rtt big host1 0.029ms < rtt small host2 0.033ms average throughput 204800000bps average delay per packet 0.217ms (12361 bits) weighted average throughput 204794677bps -- Cheers, Carlos Robinson