Hello <br> I''ll first give you my setup, and then explain my problems.<br> <br> NexentaOS_134f i86pc i386 i86pc Solaris - NexentaCore 30 Hardy 804b134<br> 2x Western Digital Caviar Black WD6402AAEX 640GB 7200 SATA 6.0Gb/s (Mirror Boot)<br> 9x HITACHI Deskstar 7K2000 HDS722020ALA330 2TB 7200 SATA 3.0Gb/s (Data) Raidz2 +1spare<br> 2x LSI Internal SATA/SAS 9211-8i 6Gb/s PCI-Express 2.0<br> NORCO RPC-4220 4U Rackmount Server Chassis<br> Supermicro X8ST3-F Server Board<br> 2x Crucial 6GB (3 x 2GB) DDR3 DDR3 1333 ECC Unbuffered Triple Channel Kit Server<br> Intel Xeon E5520 Nehalem 2.26GHz<br> <br> pool: MC-NAS<br> state: ONLINE<br> scan: none requested<br> config:<br> <br> NAME STATE READ WRITE CKSUM<br> MC-NAS ONLINE 0 0 0<br> raidz2-0 ONLINE 0 0 0<br> c0t5000CCA221E1DCA2d0 ONLINE 0 0 0<br> c0t5000CCA221E2491Ed0 ONLINE 0 0 0<br> c0t5000CCA221E285EDd0 ONLINE 0 0 0<br> c0t5000CCA221E2A7B3d0 ONLINE 0 0 0<br> c0t5000CCA221E2A7B5d0 ONLINE 0 0 0<br> c0t5000CCA221E2A7D3d0 ONLINE 0 0 0<br> c0t5000CCA221E2A7DDd0 ONLINE 0 0 0<br> c0t5000CCA221E2A805d0 ONLINE 0 0 0<br> spares c1t3d0 AVAIL <br> <br> errors: No known data errors<br> <br> pool: syspool<br> state: ONLINE<br> scan: none requested<br> config:<br> NAME STATE READ WRITE CKSUM<br> syspool ONLINE 0 0 0<br> mirror-0 ONLINE 0 0 0<br> c1t0d0s0 ONLINE 0 0 0<br> c1t1d0s0 ONLINE 0 0 0<br> <br> errors: No known data errors<br> <br> My problem has to deal with performance. When I have simultaneous transfers going from multiple PC''s, the transfers speeds are <br>really slow. Meaning, i start at 80MB/s or so and drop to 25MB/s on one PC (windows 7), and the other PC (windows xp) maxes <br>out at 14MB/s. If the xp pc stops the windows 7 pc takes off again. This cant be normal. I mean when both are going I''m only <br>getting 40MB/s. And why is the windows xp pc so slow from the start? Its has a gig card and connected to the same gig switch.<br> <br> To add, when i try to transfer a lot of files/data, the transfer seems to stall, and then start again throughout the transfer process. <br><br> Any help is greatly appreciated. I new to this so please try to dumb your answers down a little to help me learn. Thanks<br><br> Joe <br><br> C:\>iperf.exe --client 192.168.0.47<br> ------------------------------------------------------------<br> Client connecting to 192.168.0.47, TCP port 5001<br> TCP window size: 8.00 KByte (default)<br> ------------------------------------------------------------<br> [136] local 192.168.0.171 port 36769 connected with 192.168.0.47 port 5001<br> [ ID] Interval Transfer Bandwidth<br> [136] 0.0-10.0 sec 367 MBytes 307 Mbits/sec<br> C:\>iperf.exe --client 192.168.0.47 --parallel 5<br> ------------------------------------------------------------<br> Client connecting to 192.168.0.47, TCP port 5001<br> TCP window size: 8.00 KByte (default)<br> ------------------------------------------------------------<br> [168] local 192.168.0.171 port 36778 connected with 192.168.0.47 port 5001<br> [152] local 192.168.0.171 port 36776 connected with 192.168.0.47 port 5001<br> [136] local 192.168.0.171 port 36774 connected with 192.168.0.47 port 5001<br> [160] local 192.168.0.171 port 36777 connected with 192.168.0.47 port 5001<br> [144] local 192.168.0.171 port 36775 connected with 192.168.0.47 port 5001<br> [ ID] Interval Transfer Bandwidth<br> [168] 0.0-10.0 sec 217 MBytes 182 Mbits/sec<br> [152] 0.0-10.0 sec 217 MBytes 182 Mbits/sec<br> [136] 0.0-10.0 sec 217 MBytes 182 Mbits/sec<br> [160] 0.0-10.0 sec 202 MBytes 170 Mbits/sec<br> [144] 0.0-10.0 sec 202 MBytes 169 Mbits/sec<br> [SUM] 0.0-10.0 sec 1.03 GBytes 884 Mbits/sec<br> -- This message posted from opensolaris.org