Hi All
I am new to the list, but have been reading the Archives.
I need to Backup about 50 GB of Data. The Data is on a NFS Mounted
Partition. A local Backup is not possible.
The Data is mainly small files (HTML Pages, Pictures etc.) But there
are also some bigger files.
The Network thruput vary's from about 1-2 MB/s to 9 -10 MB/s. It is a
100 Mbit Network (Switched), the NFS Server is connected with a 1
Gbit Link.
I am Running a 2.4.17 Kernel with Trond's 2.4.17 NFS-all Patch.
I have tried the following mount options :
-o vers=3,async,hard,intr,nolock
Varied with differnt wsize and rsize (from 4096 to 32768, and also not
specified) , also tried with the option tcp.
The Max thruput changes a bit depending on the options but the
avg. does not change a great deal. (about 80 - 120 MB/min)
The NFS Server is a Auspex NS2000.
Anyone got an Idea how to get Linux to read the small files faster, or
howto just generaly make things faster (Read) ?
Any Ideas would be most welcome.
PS Sorry for the bad spelling, my english is rather rusty...
--
Freundliche Gr?sse (Kind Regards)
NetZone Ltd.
Gavin Woodhatch
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* http://www.netzone.ch [email protected] *
* Alpenweg 12 Tel. +41 62 724 08 08 *
* CH-5035 Unterentfelden Fax. +41 62 724 08 06 *
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what's your backup media? your tape drive may be the
real bottleneck.
> -----Original Message-----
> From: Gavin Woodhatch [mailto:[email protected]]
> Sent: Thursday, April 18, 2002 3:19 PM
> To: [email protected]
> Subject: [NFS] NFS Performance
>=20
>=20
> Hi All
>=20
> I am new to the list, but have been reading the Archives.
>=20
> I need to Backup about 50 GB of Data. The Data is on a NFS Mounted
> Partition. A local Backup is not possible.
>=20
> The Data is mainly small files (HTML Pages, Pictures etc.) But there
> are also some bigger files.
>=20
> The Network thruput vary's from about 1-2 MB/s to 9 -10 MB/s. It is a
> 100 Mbit Network (Switched), the NFS Server is connected with a 1
> Gbit Link.
>=20
> I am Running a 2.4.17 Kernel with Trond's 2.4.17 NFS-all Patch.
>=20
>=20
> I have tried the following mount options :
>=20
> -o vers=3D3,async,hard,intr,nolock
>=20
> Varied with differnt wsize and rsize (from 4096 to 32768, and also =
not
> specified) , also tried with the option tcp.
>=20
> The Max thruput changes a bit depending on the options but the
> avg. does not change a great deal. (about 80 - 120 MB/min)
>=20
> The NFS Server is a Auspex NS2000.
>=20
> Anyone got an Idea how to get Linux to read the small files faster, =
or
> howto just generaly make things faster (Read) ?
>=20
> Any Ideas would be most welcome.
>=20
> PS Sorry for the bad spelling, my english is rather rusty...
>=20
>=20
> --
>=20
> Freundliche Gr=FCsse (Kind Regards)
>=20
>=20
> NetZone Ltd.
> Gavin Woodhatch
>=20
> ******************************************************************
> * NetZone AG Webhosting *
> * http://www.netzone.ch [email protected] *
> * Alpenweg 12 Tel. +41 62 724 08 08 *
> * CH-5035 Unterentfelden Fax. +41 62 724 08 06 *
> ******************************************************************
>=20
>=20
> _______________________________________________
> NFS maillist - [email protected]
> https://lists.sourceforge.net/lists/listinfo/nfs
>=20
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
Hi Charles
> what's your backup media? your tape drive may be the
> real bottleneck.
Its a 100 GB LTO (Ultrium) Tape Drive from HP. But even "tar cf
/dev/null /mnt" is not faster ..
Thanks
Gavin Woodhatch
NetZone Ltd.
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
[email protected] (Gavin Woodhatch) writes:
> Hi Charles
>
> > what's your backup media? your tape drive may be the
> > real bottleneck.
>
> Its a 100 GB LTO (Ultrium) Tape Drive from HP. But even "tar cf
> /dev/null /mnt" is not faster ..
If tar is also slow, try with bigger blocks (by default tar reads/writes
using blocks that are 20x512 bytes and on one of my servers it is not fast
enough to make a DLT tape streaming).
man tar (-b --block-size)
--
Mathieu Chouquet-Stringer E-Mail : [email protected]
It is exactly because a man cannot do a thing that he is a
proper judge of it.
-- Oscar Wilde
_______________________________________________
NFS maillist - [email protected]
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