Hello, trying to track down this problem. Between two computers
(gutowksy,ramsey), I get quite reasonable access via web (wget measures
578.09 KB/s, with ramsey serving), but when transferring via sftp or scp,
the access crawls to a halt (starts at 30 kb/s then stalls, jumps to 30
kb/s then stalls ...). It takes 1 min to transfer a file via wget, but 3/4
of an hour via sftp!? Iperf also measures a reasonable connection rate
between the two)
the problem persists from various boxes running a range of openssh
versions connecting to gutowksy (can't transfer in reverse using ramsey's
sftp-server which works, because it's behind a firewall I don't control
...). So, it seems that the OpenSSH_3.5p1 pat OpenSSH_3.* running on
gutowsky is failing somehow (installed as corresponding redhat package).
Anyway, I then compiled a new version (openssh-4.2p1.tar.gz) and ran it on
a different port (just so I don't lock myself out - gutowsky's several
hundred miles away!) - but found no change at all. Any ideas?
p.s. I saw the message-list-archive post about slowness on solaris,
and tried altering misc.c to become:
/* disable nagle on socket */
void
set_nodelay(int fd)
{
int opt;
socklen_t optlen;
return;
...
}
-> i.e., I just through in the return as suggested (to jump out of
subroutine?)
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SDF Public Access UNIX System - http://sdf.lonestar.org
