Messages in this thread | | | From | "Enrique Bernal" <> | Subject | NFS server and client problems | Date | Fri, 23 Jul 1999 12:12:57 +0200 |
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Hi, list
Here is my question:
OS: SuSE 6.2 kernel 2.2.5 (In servers and client)
I have a PC running like a nfs-client (called "concentrador") with an application that have to poll 3 PC's nfs-servers (called "puesto1", "puesto2", "puesto3") in a continuous loop.
When a nfs-server (for example "puesto2") make a request to the nfs-client ("contrador"), the answer of "concentrador" is so slow (more than 5 o2 10 seconds) that "puesto2" suposes that "concentrador" is down.
Making the same with a PC nfs-client and 2 PC's nfs-servers performance is OK and there's no problem at all.
The way server and client can communicate is by writing in some files residents in nfs-server file system (in the exported directory).
I've modified the number of nfs daemons (up to 12 in a PC) (on the client side and ond the server side). I've mounted the nfs-servers with differents options: actimeo=1 actimeo=0 rsize=4096, wsize=4096
But none of this worked.
Looking into /var/log/messages of the nfs-client PC I've found this: nfs: RPC call returned error 111 RPC: task of released request still queued RPC: (task is on xprt_pending)
and also this: kernel: __nfs_fhget: inode 92320 busy, icount=2, inlink=1 kernel: __nfs_free_dentries: found //NEGATIVA.cag, d_count=0, hashed=1 kernel: nfs_dentry_delete: //NEGATIVA.cab; ino=92320, count=2, i_nlink=1
Lots of thanks in advance for your help !
Enrique Bernal ebv@a68.com
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