On Wed, 7 Apr 2004, Ow Mun Heng wrote: > > > > -----Original Message----- > > From: fedora-list-bounces@xxxxxxxxxx > > [mailto:fedora-list-bounces@xxxxxxxxxx]On Behalf Of Rodolfo J. Paiz > > Sent: Tuesday, April 06, 2004 10:20 PM > > To: For users of Fedora Core releases > > Subject: RE: 100Mbps Ethernet Speed/Efficiency > > >Ow Mun Heng wrote: > > > > > > >Transferring files between 2 PCs, (laptop and Desktop) > > > >I see like up to 20MB/s. > > > > > > > >Could this # be limited due to my slow HD? 4200rpm which > > hdparm -t (or > > > >is it -T) gives ~26MB/s > > > > This shows a classic mistake in labeling. Transfers are > > supposed to be > > 20MBps which would be 160 Mbps which is not bloody likely, > > whereas hdparm > > output could quite realistically be 26MBps (~208 Mbps). I can > > believe the > > hard drive output, but not the transfer speeds. Most likely > > Ow Mun Heng is > > getting 20 Mbps per second which looks slow to me. But we > > can't be sure > > without more data from him. > > I always Gets mixed up.. :) > > Okay.. I'm transferring the files using a dedicated 1-1 laptop to > desktop (linux -> windows) on a 100Mbps NIC. > > I mount the share as a smbfs share and copy the files(120MB average > realmedia files) > from linux to windows share > > cp *.rm /mnt/desktop > > I look at iftop.. > > I see 3 figures.. > 43.9Mb 46.2Mb 26.4Mb > > (I take it that translate to 1bit=8bytes, 43.9Mbs/8=5.5MB/s??) > > Using Gkrellm I see > transmit = 6.1M > > SO.. I'm at a loss. What's the best method for measuring throughput? > I'm gonna try out the ttcp util mentioned by dalen. (but Until now, I've not > > received a email response from them!!) > > so... I'm at a loss. > for remotely mounted filesystems bonnie++ or iozone can actually provide good io benchmarks... ttcp is pretty good at probbing the limits of your network hardware. > -- -------------------------------------------------------------------------- Joel Jaeggli Unix Consulting joelja@xxxxxxxxxxxxxxxxxxxx GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2
