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| Solaris The Solaris Operating System, usually known simply as Solaris, is a Unix-based operating system introduced by Sun Microsystems. The Solaris OS is now owned by Oracle. |
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#1
03-01-2010
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ndd -set /dev/tcp tcp_host_param
Following command was set up in startup script on Solaris 8 servers - improved network transfers of files from one server to the another [server B has duplicate entry in it's startup script except the IP is changed to server A] (doubled transfer speed). Code:
ndd -set /dev/tcp tcp_host_param '10.140.20.10 sendspace 279600 recvspace 279600 timestamp 1' Now they are getting a new server with Solaris 10 on it - setting the same command in a startup script does NOTHING for the speed of the transfer. both networks are 100 MB - new server on same subnet as old one. New server will get old server's IP (so nothing on the server B side has to change) Anyone know what might be the 'new' way of doing this for Solaris 10? Last edited by Scott; 03-05-2010 at 12:12 AM.. Reason: Code tags |
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#2
03-02-2010
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What are the model of the Solaris 8 and 10 machines?
Are they sparc or x86 ? |
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#3
03-02-2010
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What performance are you measuring with the Solaris 8 and 10 servers ?
This ndd setting is doomed anyway: Bug ID: 6737341 tcp_host_param should be removed |
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#4
03-02-2010
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Both are sparc machines and the application is using scp (F-secure I think) to measure 'speed'. The server A has a qfe card - the tcp_host_param is set on only one of the interfaces and it has 1.3MBs versus 512MBs to the interface with the default tcp_host_param setting.
Again, the question is what parameter (if any) would need to be set to get the same type of boost (obviously the tcp_host_param doesn't do it anymore - actually, the transfer does use the tcp_host_param setting when the scp happens [can be seen with netstat -an send-q/recv-q] but it doesn't cause it to go any faster, as it did between 2 Solaris 8 servers). |
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#5
03-02-2010
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I'm no asking what performance you measure with Solaris 8 with and without the tuning but the performance measured with Solaris 10 vs Solaris 8.
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#6
03-02-2010
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Application is using the output from the scp - examples are all from old Solaris 8 server: to 1st interface on old solaris 8 server with tcp_host_param settings set higher Code:
snoop5.out | 866MB | 1.1MB/s |TOC: 00:13:14 | 100% to 2nd interface on old solaris 8 server with no special tcp_host_param set up Code:
snoop5.out | 866MB | 756kB/s |TOC: 00:19:32 | 100% to new server (solaris 10) with tcp_host_param settings set higher Code:
snoop5.out | 866MB | 413kB/s |TOC: 00:35:48 | 100% So, they are looking to get the solaris 10 to have the same "speed" as they see on the old solaris 8 server. Last edited by Scott; 03-05-2010 at 12:14 AM.. Reason: Code tags |
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#7
03-05-2010
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maybe because of the global cap on window wize, try this: Code:
ndd -set /dev/tcp tcp_xmit_hiwat 279600 ndd -set /dev/tcp tcp_recv_hiwat 279600 TCP Tunable Parameters (Solaris Tunable Parameters Reference Manual) - Sun Microsystems Last edited by Scott; 03-05-2010 at 12:16 AM.. Reason: Please use code tags |
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