On Wed, Oct 31, 2001 at 12:18:47AM -0500, Jonathan A. Zdziarski wrote: > I was scp'ing a 2MB file to my home computer over a DSL line and just > happened to run top at the same time. I immediately noticed this line: > > 13864 root 1 30 0 2884K 1744K run 0:38 42.00% sshd2 > > It appears that scp'ing a file over a slow connection causes the process to > suck up a huge number of resources. There's most likely no usleep() > somewhere it's needed. A couple scp's over slow connections could severely > degrade the boxes performance. > > This test was performed on a Solaris 8_x86 machine. If you are refering to SSH Communication Security Inc's SSH2 v3.0.1, this is a known bug, and they are working on the fix. It affects all server implimentations (UNIX and Windows). For a list of all the known bugs check out: http://www.ssh.com/faq/index.cfm?category=129 I get 99% utilization on a fast link (Cable modem, and 10/100/1000Mb Ethernet. ---------------------------------------------------------------------------- __o Bradley Arlt Email: arlt@cpsc.ucalgary.ca o__ _ \<_ WWW: www.acs.ucalgary.ca/~bdarlt _>/ _ (_)/(_) -Eat well, sleep peacefully, drink lots, and ride like hell. (_)\(_)
