Re: Slow file transfers on network
- From: "Kalyan Manchikanti" <kalyan.manchikanti@xxxxxxxxx>
- Date: 7 Apr 2007 07:50:10 -0700
On Apr 6, 10:55 pm, l...@xxxxxxx wrote:
On 6 Apr 2007 18:40:37 -0700, "Kalyan Manchikanti"
<kalyan.manchika...@xxxxxxxxx> wrote:
On Apr 6, 8:10 pm, l...@xxxxxxx wrote:
Okie, here's what I have hardware wise...
Netra T 1405 (similar to Ultra 80 and 420R).
four 440MHz processors.
4 Gigs RAM.
Onboard NIC.
LAN is 100mbit- HP Procurve switched, not hubbed.
LAN has local DHCP provided by router.
6 computers on LAN, 5 windows, 1 Solaris 10. All are current on
updates.
What Happens:
Using FTP to get into the Netra, max file transfer rate is about
3mb/s. Using Samba and Windows networking it's still about 3mb/s. This
is true for traffic going in or out of the Netra.
On a very good day, it's 6mb/s but that never lasts more than a minute
or so, then it's back to 2 or 3mb/s.
Transfer rates in a windows-to-windows connection on this netweork
exceeds 60mb/s.
Connecting to the internet is no problem, and I can max out my cable
modem downloading from the internet to the Netra, but my cable modem
is limited at 3mb/s.
Why is the Netra so slow on in-network transfers??
I've swapped ports on the switch, changed all the cables, even plugged
the Netra into a 'known good' connection where a windows box gets
60mb/s.
Server load is less than 2%. (there ain't nuthin running on it yet..)
No other network traffic during tests. The Solaris install is fresh.
I get no errors in long ping sessions with any of the other computers,
even when I send large ping packets (16384 bytes).
Any ideas from the gurus here?
Thanks!
What onboard NIC is this ? Did you check the duplex settings on the
server ? I do a lot of solaris to windows transfers on a lan and I
usually top out at 6 or 7 mbps as well..
The onboard NIC is the single 100mb port embedded on the mainboard of
the computer. The network interface was recognized as 100mb and set
up by the OS during the install.(and the "100" light on the network
switch is lit) How would I check/change the duplex setting? I'm
kinda new to SPARC and Solaris.
I meant the "type" of NIC. Do a "ifconfig -a" and it will show you
what type of interface you have. If it is hme0, then "ndd -get /dev/
hme0 link_speed and ndd -get /dev/hme0 link_duplex" should show 100
and 1 respectively..
(BTW- the Netra is using an 18Gig 10,000 RPM SCSI drive as boot device
and extended storage is 3 more 9Gig 10,000 RPM drives (all drives are
Sun parts) so I don't think there's a bottleneck in disk I/O.. I get
the same slow speeds transfering files to/from either the boot disk or
the extended storage.)
One rumor I've heard that setting the MTU higher than ~1500 can help
improve transfer speeds, but again for me the newbie, I'm still
digging through man pages trying to figure out how and if this would
even help..
I just don't see how a machine designed as a server has such low
network I/O capacity- a consumer grade windows box is 10 times
faster... How could this Sun box survive in a real world situation
serving up web pages and hosting a FTP site for a dozen clients?
I'd revisit the measurements here again. I am just not sure about the
60 Mb/s windows transfer. As Tim suggested is it M bits / sec or M
bytes /sec? 6 mbytes /sec though not stellar is a very acceptable
speed of transfer on a 100 mbps lan.
What am I doing wrong?
.
- References:
- Re: Slow file transfers on network
- From: Kalyan Manchikanti
- Re: Slow file transfers on network
- Prev by Date: Re: Is Solaris 10 a good home os?
- Next by Date: Re: NIS? In this day and age?
- Previous by thread: Re: Slow file transfers on network
- Next by thread: Re: Slow file transfers on network
- Index(es):
Relevant Pages
|
Loading
