From: "poczta.dotcom.pl" Subject: nfs performance problem Date: Tue, 5 Nov 2002 19:03:43 +0100 Sender: nfs-admin@lists.sourceforge.net Message-ID: <005b01c284f5$ae1d6090$640a010a@winda> Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0058_01C284FE.0FA7CCD0" Return-path: Received: from rtr.pul.pl ([195.116.89.98] helo=poczta.dotcom.pl) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 18988a-0008Be-00 for ; Tue, 05 Nov 2002 10:09:16 -0800 Received: from winda (office.interia.pl [213.76.176.114]) by poczta.dotcom.pl (Postfix) with ESMTP id 52F9A159E7 for ; Tue, 5 Nov 2002 19:06:47 +0100 (CET) To: Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: This is a multi-part message in MIME format. ------=_NextPart_000_0058_01C284FE.0FA7CCD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi All I have really slow working nfs. Server is build on: - dual pentium Xeon 2GHz, - 2 3ware 7500 controllers, - raid 5 on 7 160GB discs on controler 1=20 - raid 5 on 6 160GB disks on cotroller 2=20 Serwer is used for ~500k maildirs,=20 all clients (~20) are freebsd boxes, when nfs transfer is around 1MB/s = for writing and 1.5MB/s for reading=20 listing user directories even with very few file stakes up to 15 = seconds. I tried nfs-ALL patch, but it didn' t help. I run 256 nfs daemons, echo 2097152 > /proc/sys/net/core/rmem_max echo 2097152 > /proc/sys/net/core/rmem_default nsfstat output: Server rpc stats: calls badcalls badauth badclnt xdrcall 25271043 17885061 0 17885061 0 Server nfs v3: null getattr setattr lookup access readlink 25 0% 1159 0% 89718 0% 11702395 46% 10953437 43% 34868 0% read write create mkdir symlink mknod 925727 3% 226250 0% 44964 0% 1089 0% 2299 0% 0 0% remove rmdir rename link readdir readdirplus 35040 0% 42 0% 121064 0% 535 0% 534720 2% 0 0% fsstat fsinfo pathconf commit 585179 2% 36 0% 0 0% 12493 0% mount over tcp gives frequent errors on freebsd clients side: kernel: nfs send error 32 from nfs server xxx.xxx.xxx.xxx:/export thanks for any help,=20 rafal ------=_NextPart_000_0058_01C284FE.0FA7CCD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi All

I have really slow working = nfs.

Server is build on:

- dual pentium Xeon = 2GHz,

- 2 3ware 7500 = controllers,

- raid 5 on 7 160GB discs on controler=20 1

- raid 5 on 6 160GB disks on cotroller=20 2

Serwer is used for ~500k maildirs, =

all clients (~20) are freebsd boxes, = when nfs=20 transfer is around 1MB/s for writing and 1.5MB/s for reading =

listing user directories even with very = few file=20 stakes up to 15 seconds.

I tried nfs-ALL patch, but it didn' t=20 help.

I run 256 nfs daemons,

echo 2097152 >=20 /proc/sys/net/core/rmem_max
echo 2097152 >=20 /proc/sys/net/core/rmem_default

nsfstat=20 output:

Server rpc=20 stats:
calls badcalls =20 badauth badclnt =20 xdrcall
25271043 17885061 =20 0 = 17885061 =20 0

Server nfs=20 v3:
null       = getattr   =20 setattr    lookup    =20 access     = readlink
25      0%=20 1159    0% 89718   0% 11702395 46% 10953437 43% = 34868   0%
read      =20 write      create    =20 mkdir      symlink   =20 mknod
925727 3% 226250 0% 44964   0%=20 1089    0% 2299    0%=20 0       = 0%
remove    =20 rmdir      rename    =20 link       readdir   =20 readdirplus
35040   0% 42      0%=20 121064 0% 535     0% 534720 2%=20 0       = 0%
fsstat    =20 fsinfo     pathconf   = commit
585179 2%=20 36      0% = 0       0%=20 12493   0%

mount over tcp gives frequent errors on = freebsd=20 clients side:

kernel: nfs send error 32 from nfs = server=20 xxx.xxx.xxx.xxx:/export

thanks for any help,

rafal

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