Hi,
please CC: me as I don't read linux-kernel regularly.
I'm running Mandrake Linux 7.0 (2.2.14-15mdk) on a NFS client, and Debian
2.2 (but with a Mandrake 2.2.15-6mdk kernel) on a NFS server. NFS speed from
server to client is satisfactory (about 4MB/sec over 100MBit Ethernet). The
other direction is really, really slow. (100k/sec)
The Mandrake kernel is patched with the following NFS related things.
linux-2.2.14-nfsattack2.patch.bz2
linux-2.2.14-sparc-nfs.patch.bz2
nfs-inode-2.2.10.bz2
and compiled with -O3 and -D__KERNEL__ -Wall -Wstrict-prototypes -O2
-fomit-frame-pointer -fno-strict-aliasing -pipe -O3 -fomit-frame-pointer
-fno-exceptions -fno-rtti -pipe -s -mpentium -mcpu=3Dpentium -march=3Dpenti=
um
-ffast-math -fexpensive-optimizations -malign-loops=3D2 -malign-jumps=3D2
-malign-functions=3D2 -mpreferred-stack-boundary=3D2 -m486 -malign-loops=3D2
-malign-jumps=3D2 -malign-functions=3D2 -DCPU=3D586
(standard Mandrake procedure, I suppose)
I switched nfs*_debug=3D9 in /proc on the server and got things like
Jun 6 21:59:37 pinguin kernel: nfsd_dispatch: proc 8
Jun 6 21:59:58 pinguin last message repeated 6298 times
Jun 6 21:59:58 pinguin kernel: nfsd_dispatch: proc 4
Jun 6 21:59:58 pinguin kernel: nfsd_dispatch: proc 4
Jun 6 21:59:58 pinguin kernel: nfsd_dispatch: proc 1
Jun 6 21:59:58 pinguin kernel: nfsd_dispatch: proc 6
Jun 6 21:59:58 pinguin kernel: nfsd_dispatch: proc 8
Jun 6 21:59:58 pinguin kernel: nfsd_dispatch: proc 6
Jun 6 21:59:59 pinguin last message repeated 494 times
I switched nfs*_debug=3D9 on the client and got this:
ds9 kernel: NFS: dentry_delete(Probe-5.6.RAW/probe-5.6.komplett.1.wav, 0)=
=20
ds9 kernel: NFS: lookup(Probe-5.6.RAW/probe-5.6.komplett.1.wav)=20
ds9 kernel: 312c58)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 249856+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e120)=20
ds9 kernel: NFS: 2704 schedule_write_request (async)=20
ds9 kernel: nfs: write(Probe-5.6.RAW/probe-5.6.komplett.1.wav(82462), 8192@=
253952)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@253952, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c0312c08)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 253952+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e240)=20
ds9 kernel: NFS: 2705 schedule_write_request (async)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@258048, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030e590)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 258048+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e360)=20
ds9 kernel: NFS: 2706 schedule_write_request (async)=20
ds9 kernel: nfs: write(Probe-5.6.RAW/probe-5.6.komplett.1.wav(82462), 8192@=
262144)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@262144, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030e4a0)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 262144+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e480)=20
ds9 kernel: NFS: 2707 schedule_write_request (async)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@266240, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030e220)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 266240+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e5a0)=20
ds9 kernel: NFS: 2708 schedule_write_request (async)=20
ds9 kernel: nfs: write(Probe-5.6.RAW/probe-5.6.komplett.1.wav(82462), 8192@=
270336)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@270336, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030e1a8)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 270336+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e6c0)=20
ds9 kernel: NFS: 2709 schedule_write_request (async)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@274432, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030dc30)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 274432+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e7e0)=20
ds9 kernel: NFS: 2710 schedule_write_request (async)=20
ds9 kernel: nfs: write(Probe-5.6.RAW/probe-5.6.komplett.1.wav(82462), 8192@=
278528)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@278528, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030db68)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 278528+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429e900)=20
ds9 kernel: NFS: 2711 schedule_write_request (async)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@282624, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030da50)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 282624+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429ea20)=20
ds9 kernel: NFS: 2712 schedule_write_request (async)=20
ds9 kernel: nfs: write(Probe-5.6.RAW/probe-5.6.komplett.1.wav(82462), 8192@=
286720)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@286720, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030d8e8)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 286720+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429eb40)=20
ds9 kernel: NFS: 2713 schedule_write_request (async)=20
ds9 kernel: NFS: nfs_updatepage(Probe-5.6.RAW/probe-5.6.komplett.1.wav=
4096@290816, sync=3D0)=20
ds9 kernel: NFS: find_write_request(6/82462, c030d820)=20
ds9 kernel: NFS: create_write_request(Probe-5.6.RAW/probe-5.6.komplett=
.1.wav, 290816+4096)=20
ds9 kernel: NFS: append_write_request(c4bb61ec, c429ec60)=20
ds9 kernel: NFS: 2714 schedule_write_request (async)=20
ds9 kernel: nfs: write(Probe-5.6.RAW/probe-5.6.komplett.1.wav(82462), 8192@=
294912)=20
and so on ... (ask if you need more).
I hope someone can interpret this.
Thanks a LOT in advance. :)
--=20
Microsoft is a cross between The Borg and the Ferengi. Unfortunately they
use Borg to do their marketing and Ferengi to do their programming.=20
-- Simon Slavin, in the Monastery.
--h31gzZEtNLTqOjlF
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