Messages in this thread | | | From | Lars Magne Ingebrigtsen <> | Subject | Performance problems with NFS under 2.4.20 | Date | Mon, 13 Jan 2003 16:35:42 +0100 |
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Upgrading from 2.2.20, I'm seeing vastly increased network traffic, and after poking around a bit, I find that all calls to open() on files on NFS-mounted partitions generates one UDP packet. Switching on NFS debugging, and then saying
$ cat file $ cat file
shows me this:
Jan 13 16:27:23 litos kernel: NFS: refresh_inode(b/876609548 ct=1 info=0x2) Jan 13 16:27:23 litos kernel: nfs: read(//file, 4096@0) Jan 13 16:27:23 litos kernel: nfs: read(//file, 4096@17) Jan 13 16:27:23 litos kernel: nfs: flush(b/876609548) Jan 13 16:27:23 litos kernel: NFS: dentry_delete(//file, 0) Jan 13 16:27:24 litos kernel: NFS: refresh_inode(b/876609548 ct=1 info=0x2) Jan 13 16:27:24 litos kernel: nfs: read(//file, 4096@0) Jan 13 16:27:24 litos kernel: nfs: read(//file, 4096@17) Jan 13 16:27:24 litos kernel: nfs: flush(b/876609548) Jan 13 16:27:24 litos kernel: NFS: dentry_delete(//file, 0)
The partition is mounted with just
$ mount server:/db /db
Adding a "-o actimeo=100" makes no difference.
Is this supposed 1) to be this way, or 2) a bug, or 3) a misconfiguration on my part?
-- (domestic pets only, the antidote for overdose, milk.) larsi@gnus.org * Lars Magne Ingebrigtsen
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