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Full Discussion: slow network on RHEL5
Operating Systems Linux Red Hat slow network on RHEL5 Post 302351819 by Radar on Wednesday 9th of September 2009 04:33:44 PM
Old 09-09-2009
Just a stab - Sometimes the slowness with SSH is that the remote sshd is trying to do a reverse DNS lookup to the client. Try commenting out any DNS servers in /etc/resolve.conf on the "slow" server and test. If that works, chances are. it's because your server is unable to communicate with the DNS server.
 

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cvc(7D) 							      Devices								   cvc(7D)

NAME
cvc - virtual console driver DESCRIPTION
The cvc virtual console driver is a STREAMS-based pseudo driver that supports the network console. The cvc driver interfaces with con- sole(7D). Logically, the cvc driver sits below the console driver. It redirects console output to the cvcredir(7D) driver if a network console con- nection is active. If a network console connection is not active, it redirects console output to an internal hardware interface. The cvc driver receives console input from cvcredir and internal hardware and passes it to the process associated with /dev/console. NOTES
The cvc facility supersedes the SunOS wscons(7D) facility, which should not be used in conjunction with cvc. The wscons driver is use- ful for systems with directly attached consoles (frame buffers and keyboards), but is not useful with platforms using cvc, which have no local keyboard or frame buffer. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+--------------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+--------------------------------------+ |Architecture |Sun Enterprise 10000 servers, Sun | | |Fire 15000 servers | +--------------------+--------------------------------------+ |Availability |SUNWcvc.u | +--------------------+--------------------------------------+ SEE ALSO
cvcd(1M), attributes(5), console(7D), cvcredir(7D), wscons(7D) Sun Enterprise 10000 SSP Reference Manual Sun System Management Services (SMS) Reference Manual SunOS 5.11 15 Sep 2000 cvc(7D)
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