Date: Wed, 27 Sep 2006 12:26:10 -0700 From: Frank Jahnke <jahnke@sonatabio.com> To: freebsd-sparc64@freebsd.org Subject: Terrible hme throughput Message-ID: <1159385171.850.237.camel@pinot.fmjassoc.com>
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I am seeing terrible network throughput on my Ultra 1E+ (a "fast" 1E
clone). It uses the hme interface; throughputs using scp on a large
file are about 1.3MB/s. Transferring the same file using scp between
two different, faster computers gives me a throughput of about 8-9MB/s.
This is a 100MB/s network, so that seems OK.
ifconfig shows that hme is set properly (as far as I can tell):
hme0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=b<RXCSUM,TXCSUM,VLAN_MTU>
inet6 fe80::240:dcff:fe3b:21d8%hme0 prefixlen 64 scopeid 0x1
inet 192.168.0.103 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:40:dc:3b:21:d8
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
and the MTUs are the same for all machines (and all are FreeBSD 6.1).
Yes, I know that scp has overhead, but I find it hard to believe that
the box could not keep up with it (it is a blazing 300MHz, after all),
particularly for the throughput reduction I see.
Any suggestions on how I can increase the network performance of my 1E+?
Frank
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