Red Hat Bugzilla – Bug 67758
ftp transfers are very slow, 500MB takes 2 hours.
Last modified: 2007-04-18 12:43:48 EDT
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User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)
Description of problem:
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. ftp a file from this box to another Linux box
2. ftp a file from this box to another HP box
3. ftp a file to this box from either above. All Linux builds on IBM xseries
rack mounts are behaving the same.
Actual Results: The ftp works but it takes a couple of hours for just a 500MB
Expected Results: Should happen pretty fast.
This can have a number of reasons, and wu-ftpd isn't likely to be the culprit.
It is much more likely that the driver for your network card isn't performing
- What network card are you using?
- Does the same happen if you use "ftp localhost" to download the file?
This is a standard integrated adapter on the IBM xseries 330, 10/100 Mbps. I
tried to ftp to localhost and it does seem to be fast.
How do I tell what driver it is using?
You can tell which driver you are using by looking at the output of lsmod.
It lists all currently loaded kernel modules [mostly drivers].
Since ftp localhost is not affected, this is almost certainly driver related;
Module Size Used by
mvfs 303136 2
nfs 79008 5 (autoclean)
lockd 52464 1 (autoclean) [nfs]
sunrpc 61328 1 [mvfs nfs lockd]
eepro100 16624 1 (autoclean)
ipchains 38976 0 (unused)
usb-ohci 17104 0 (unused)
usbcore 49664 1 [usb-ohci]
aic7xxx 136080 7
sd_mod 11680 7
scsi_mod 95072 2 [aic7xxx sd_mod]
What kernel version are you actually running? If it's not 2.4.9-31, 2.4.9-34 or
2.4.18-5, please upgrade to that first since that has a bugfixed eepro100 driver.
I am currently at 2.4.2-2. I'll try upgrading and see if that fixes. Thanks!
*** This bug has been marked as a duplicate of 78616 ***
Found the problem! Slow ftp caused by the ethernet switch being set to
autonegotiate, while the Linux server was set to 100FD. Did a # mii-tool eth0
to find the correct speed of the NIC.