muskad202
asked on
linux machine - upload extremely slow
hi !!
i've got root access to a machine (i dunno the linux version number, its either redhat 8 or 9) ... i can only log on remotely using ssh
i'm on a 10/100 mbit LAN
after logging in thru ssh, when i try downloading a file thru ftp , it comes pretty fast .. (i.e., the normal speed that it should come at .. say 2 MB/s)
however, when i try uploading to the ftp, the speed is pathetic (around 50 KB/s) ..
there's nothing wrong with the FTP .. i tried 3 different machines running FTP servers, and in all cases, the same thing was happening ..
its as if there is a restriction on the upload bandwith ..
can someone help me ?? i have root access, but have very little knowledge on working with linux .. and have no idea what to do ...
thanks :)
muskad202
i've got root access to a machine (i dunno the linux version number, its either redhat 8 or 9) ... i can only log on remotely using ssh
i'm on a 10/100 mbit LAN
after logging in thru ssh, when i try downloading a file thru ftp , it comes pretty fast .. (i.e., the normal speed that it should come at .. say 2 MB/s)
however, when i try uploading to the ftp, the speed is pathetic (around 50 KB/s) ..
there's nothing wrong with the FTP .. i tried 3 different machines running FTP servers, and in all cases, the same thing was happening ..
its as if there is a restriction on the upload bandwith ..
can someone help me ?? i have root access, but have very little knowledge on working with linux .. and have no idea what to do ...
thanks :)
muskad202
If you are SSH into the Linux box i guess you are going over ADSL/ or some sort of internet connection..
What has FTP'ing got to do with this???
50kb per second is quick for upload.. thats close to a 512kilobit upload speed.
If you have two linux Boxes. try to (scp) your files over.
What has FTP'ing got to do with this???
50kb per second is quick for upload.. thats close to a 512kilobit upload speed.
If you have two linux Boxes. try to (scp) your files over.
ASKER
after i get into the linux machine (using SSH) .. i need to transfer a file out of it onto my machine .. for that purpose i'm using ftp
its not actually than 50 kb/s (just made it up) .. dunno the exact speed , but it took me nearly 14 hours to transfer a 300 mb file out of it .. which is pretty slow considering that it took me just 10 minutes to transfer the same file into it !!!!
i used ssh ftp (is that what is meant by scp ??) (using a ssh client for windows) initially, but it was transferring at the same pathetic speed ... :(
its not actually than 50 kb/s (just made it up) .. dunno the exact speed , but it took me nearly 14 hours to transfer a 300 mb file out of it .. which is pretty slow considering that it took me just 10 minutes to transfer the same file into it !!!!
i used ssh ftp (is that what is meant by scp ??) (using a ssh client for windows) initially, but it was transferring at the same pathetic speed ... :(
SOLUTION
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ASKER
nope .. the transfer is thru the LAN ..
i can't use samba becoz there is a firewall .. and i have no idea on how to turn it off ..
is there a possibility of a bandwith estriction being in place ?? and if so, how do i turn it off ??
i can't use samba becoz there is a firewall .. and i have no idea on how to turn it off ..
is there a possibility of a bandwith estriction being in place ?? and if so, how do i turn it off ??
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ASKER
any tips on how i could go about checking whether that is indeed the problem, and remedy it ?? but, how come this problem doesn't occur when i am uploading to the linux machine .. only when i am downloading from it ??
huh? you cant use samba because you have a firewall???
isnt your firewall set up at all?
to turn it off try this
/etc/rc.d/init.d/./firewal
or
/etc/rc.d/init.d/./iptable
man get samba working. its the easiest way to do it.
\
isnt your firewall set up at all?
to turn it off try this
/etc/rc.d/init.d/./firewal
or
/etc/rc.d/init.d/./iptable
man get samba working. its the easiest way to do it.
\
A link mode negotiation can affect one or both data transfer directions, dpending on which end of the link has the problem. You have to make sure that each machine has correctly negotitated the appropriate link mode for what they connect to. Note that for more complex network paths involving routers the probblem can lie between the routers.
On the Linux box you can run mii-tool and it will report the link status, like:
root# mii-tool
eth0: negotiated 100baseTx-FD, link ok
On the Linux box you can run mii-tool and it will report the link status, like:
root# mii-tool
eth0: negotiated 100baseTx-FD, link ok
ASKER
hi !!
i switched off the firewall, and started samab .. tried copying the file, but same problem as before .. windows was showing the estimated time to copy the file as 9 hours, .. left it on for abou half an hour (the copying process), and it was yet showing 9 hours .. :(
i tried mii-tool also, but got an error :
-->
SIOCGMIIPHY on 'eth0' failed: Operation not supported
no MII interfaces found
(thanks for your help ...)
muskad202
i switched off the firewall, and started samab .. tried copying the file, but same problem as before .. windows was showing the estimated time to copy the file as 9 hours, .. left it on for abou half an hour (the copying process), and it was yet showing 9 hours .. :(
i tried mii-tool also, but got an error :
-->
SIOCGMIIPHY on 'eth0' failed: Operation not supported
no MII interfaces found
(thanks for your help ...)
muskad202
hmmmm
you need to test packet loss.
try to ping the Linux server from a workstation, same with workstation to workstation. you could have a cable issue.
or another possibility is your hub/switch is screwed!
you need to test packet loss.
try to ping the Linux server from a workstation, same with workstation to workstation. you could have a cable issue.
or another possibility is your hub/switch is screwed!
> SIOCGMIIPHY on 'eth0' failed: Operation not supported
Were you executing the command as root? If you were you've got one of the devices not supported by mii-tool. What NIC do you have ('cat /proc/pci' should tell)
Were you executing the command as root? If you were you've got one of the devices not supported by mii-tool. What NIC do you have ('cat /proc/pci' should tell)
ASKER
Hi !!
/proc/pci :
----
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: ServerWorks CNB20LE Host Bridge (rev 6).
Master Capable. Latency=96.
Bus 0, device 0, function 1:
Host bridge: ServerWorks CNB20LE Host Bridge (#2) (rev 6).
Master Capable. Latency=96.
Bus 0, device 1, function 0:
VGA compatible controller: S3 Inc. Savage 4 (rev 4).
Master Capable. Latency=248. Min Gnt=4.Max Lat=255.
Non-prefetchable 32 bit memory at 0xfeb80000 [0xfebfffff].
Prefetchable 32 bit memory at 0xf0000000 [0xf7ffffff].
Bus 0, device 2, function 0:
Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 8).
IRQ 15.
Master Capable. Latency=96. Min Gnt=8.Max Lat=56.
Non-prefetchable 32 bit memory at 0xfeb7f000 [0xfeb7ffff].
I/O at 0x2000 [0x203f].
Non-prefetchable 32 bit memory at 0xfea00000 [0xfeafffff].
Bus 0, device 15, function 0:
ISA bridge: ServerWorks OSB4 South Bridge (rev 80).
Bus 0, device 15, function 1:
IDE interface: ServerWorks OSB4 IDE Controller (rev 0).
Master Capable. Latency=64.
I/O at 0x700 [0x70f].
Bus 0, device 15, function 2:
USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 4).
IRQ 10.
Master Capable. Latency=96. Max Lat=80.
Non-prefetchable 32 bit memory at 0xfeb7e000 [0xfeb7efff].
Bus 1, device 3, function 0:
SCSI storage controller: Adaptec AIC-7892P U160/m (rev 2).
IRQ 9.
Master Capable. Latency=96. Min Gnt=40.Max Lat=25.
I/O at 0x2100 [0x21ff].
Non-prefetchable 64 bit memory at 0xeffff000 [0xefffffff].
Bus 1, device 7, function 0:
Ethernet controller: Intel Corp. 82543GC Gigabit Ethernet Controller (rev 2).
IRQ 10.
Master Capable. Latency=96. Min Gnt=255.
Non-prefetchable 32 bit memory at 0xeffc0000 [0xeffdffff].
Non-prefetchable 32 bit memory at 0xeffe0000 [0xeffeffff].
---
this make no sense to me :) ..
/proc/pci :
----
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: ServerWorks CNB20LE Host Bridge (rev 6).
Master Capable. Latency=96.
Bus 0, device 0, function 1:
Host bridge: ServerWorks CNB20LE Host Bridge (#2) (rev 6).
Master Capable. Latency=96.
Bus 0, device 1, function 0:
VGA compatible controller: S3 Inc. Savage 4 (rev 4).
Master Capable. Latency=248. Min Gnt=4.Max Lat=255.
Non-prefetchable 32 bit memory at 0xfeb80000 [0xfebfffff].
Prefetchable 32 bit memory at 0xf0000000 [0xf7ffffff].
Bus 0, device 2, function 0:
Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 8).
IRQ 15.
Master Capable. Latency=96. Min Gnt=8.Max Lat=56.
Non-prefetchable 32 bit memory at 0xfeb7f000 [0xfeb7ffff].
I/O at 0x2000 [0x203f].
Non-prefetchable 32 bit memory at 0xfea00000 [0xfeafffff].
Bus 0, device 15, function 0:
ISA bridge: ServerWorks OSB4 South Bridge (rev 80).
Bus 0, device 15, function 1:
IDE interface: ServerWorks OSB4 IDE Controller (rev 0).
Master Capable. Latency=64.
I/O at 0x700 [0x70f].
Bus 0, device 15, function 2:
USB Controller: ServerWorks OSB4/CSB5 OHCI USB Controller (rev 4).
IRQ 10.
Master Capable. Latency=96. Max Lat=80.
Non-prefetchable 32 bit memory at 0xfeb7e000 [0xfeb7efff].
Bus 1, device 3, function 0:
SCSI storage controller: Adaptec AIC-7892P U160/m (rev 2).
IRQ 9.
Master Capable. Latency=96. Min Gnt=40.Max Lat=25.
I/O at 0x2100 [0x21ff].
Non-prefetchable 64 bit memory at 0xeffff000 [0xefffffff].
Bus 1, device 7, function 0:
Ethernet controller: Intel Corp. 82543GC Gigabit Ethernet Controller (rev 2).
IRQ 10.
Master Capable. Latency=96. Min Gnt=255.
Non-prefetchable 32 bit memory at 0xeffc0000 [0xeffdffff].
Non-prefetchable 32 bit memory at 0xeffe0000 [0xeffeffff].
---
this make no sense to me :) ..
ASKER
master_chris: pinging works fine ..
My guess, right now, is that you are using RedHat 9 and it hasn't been updated. The kernel shipped on the CD's has problems with certain NIC cards, the Intel card being one of them. On one of my RedHat 8/9 systems I can see:
Bus 0, device 6, function 0:
Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (#2) (rev 8).
IRQ 31.
in /proc/pci and executing mii-tool yields:
eth0: negotiated 100baseTx-FD, link ok
eth1: no link
Since that same command, on the same hardware, fails on your system the most probable cause is that the system needs updating. However, it also could be a BIOS problem and I'd recommend checking with your MB vendor for a later BIOS version.
Bus 0, device 6, function 0:
Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (#2) (rev 8).
IRQ 31.
in /proc/pci and executing mii-tool yields:
eth0: negotiated 100baseTx-FD, link ok
eth1: no link
Since that same command, on the same hardware, fails on your system the most probable cause is that the system needs updating. However, it also could be a BIOS problem and I'd recommend checking with your MB vendor for a later BIOS version.
ASKER