Hi, I have 2 computers connected with Ethernet LAN(cross cabled) and both running Fedora Core 1. I m running nfs server on one of them. My problem is that whenever i copy a big file (about >10MB) the speed of copying reduces drastically and sometimes it even stalls . However when i copy the file using http/ftp then there is no problem. I have tried using following options while mounting in nfs rsize=8192,wsize=8192,no_wdelay etc.... I have also tried using tcp option but it did not help.
Please help, CHIRAG.
Chirag Arjun Bhangale wrote:
Hi, I have 2 computers connected with Ethernet LAN(cross cabled) and both
^^^^^^^^ do you mean cross-crimped?
running Fedora Core 1. I m running nfs server on one of them. My problem is that whenever i copy a big file (about >10MB) the speed of copying reduces drastically and sometimes it even stalls .
Strange. For you the abbv., NFS = Network Failure System seems to be particularly true.
Regards,
Amol Hatwar.
--- Amol Hatwar amol@hatwar.org wrote:
Chirag Arjun Bhangale wrote:
Hi, I have 2 computers connected with Ethernet
LAN(cross cabled) and both
^^^^^^^^ do you mean cross-crimped?
running Fedora Core 1. I m running nfs server on one of them. My problem is that whenever i copy a big file
(about >10MB) the speed
of copying reduces drastically and sometimes it
even stalls .
[SNIP] ============== NFS HOWTO Says this ========= This is a problem with the fsync() function in 2.2 kernels that causes all sync-to-disk requests to be cumulative, resulting in a write time that is quadratic in the file size. If you can, upgrading to a 2.4 kernel should solve the problem. Also, exporting with the no_wdelay option forces the program to use o_sync() instead, which may prove faster.
======================================
So look out for info on net, that may help.
Regards Tapeshwar
Strange. For you the abbv., NFS = Network Failure System seems to be particularly true.
Regards,
Amol Hatwar.
__________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/
Tapeshwar Nath gtapeshwar@yahoo.com wrote:
--- Amol Hatwar wrote:
Chirag Arjun Bhangale wrote:
Hi, I have 2 computers connected with Ethernet
LAN(cross cabled) and both
^^^^^^^^ do you mean cross-crimped?
running Fedora Core 1. I m running nfs server on one of them. My problem is that whenever i copy a big file
(about >10MB) the speed
of copying reduces drastically and sometimes it
even stalls .
[SNIP] ============== NFS HOWTO Says this ========= This is a problem with the fsync() function in 2.2 kernels that causes all sync-to-disk requests to be cumulative, resulting in a write time that is quadratic in the file size. If you can, upgrading to a 2.4 kernel should solve the problem. Also, exporting with the no_wdelay option forces the program to use o_sync() instead, which may prove faster.
====================================== (snip)
He is using FC1.. This means he is using atleast 2.4.21 kernel and hence the above problem is not with the kernel. Is the LAN thru a hub or a switch.. I have used both and it seems that a hub slows things down a lot.... If this does not help... try asking on IRC #fedora on irc.freenode.net. Those guys can help you with almost anything..
---
So look out for info on net, that may help. Regards Tapeshwar
Strange. For you the abbv., NFS = Network Failure System seems to be particularly true.
Regards,
Amol Hatwar.
__________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/
-
Amol Hatwar -
Chirag Arjun Bhangale -
Tapeshwar Nath -
Varun Pitale