Hello,

I try to optimize the performance of my network.

I have :
- centos server with network card 1000M (DELL Poweredge) ext3, with 3 HDD SAS RAID5.
- win xp client (DELL Optiplex) : ntfs
- nas Synology : ntfs
- switch 1000M (Zyxel)

When I log to switch, and efter negociation the 3 ports display : 1000M.

Current transfert from server to client, or server to nas (rsync with mount -t smbfs) average : 5 - 9 M/s

What can I do ?

Hello,

I try to use nfs v4, here are the results :

my test :
dd if=/dev/zero of=/mnt/nfs/pc1/output.img bs=8k count=256k

time elapsed :
3min 13sec.

so now to copy big file (2Go) from client to server, I have an average of 20Mb/s (max #100Mb/s with Giga network) ...

1) if my switch displays 1000M for one port connected, is that the pc connected and the cable OK for 1000M ?

2) can you help me to test / increase my network performance ?

Hello,

No one to help me

Here are some informations:

My SERVER:
--------------

Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: d
Current message level: 0x000000ff (255)
Link detected: yes

-----

eth0 Link encap:Ethernet HWaddr 00:YY:YY:YY:YY:BF
inet adr:YYY.YYY.YYY.1 Bcast:YYY.YYY.YYY.255 Masque:255.255.255.0
adr inet6: yyyy::yyy:c9ff:fef6:e1bf/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:152386 errors:0 dropped:0 overruns:0 frame:0
TX packets:654643 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
RX bytes:42101609 (40.1 MiB) TX bytes:926143839 (883.2 MiB)
Interruption:169

lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:7607452 errors:0 dropped:0 overruns:0 frame:0
TX packets:7607452 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
RX bytes:3058546277 (2.8 GiB) TX bytes:3058546277 (2.8 GiB)

-----


My client:
-----------

Settings for eth1:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: g
Current message level: 0x000000ff (255)
Link detected: yes

---

eth1 Link encap:Ethernet HWaddr 00:YY:YY:YY:YY:15
inet adr:YYY.YYY.YYY.5 Bcast:YYY.YYY.YYY.255 Masque:255.255.255.0
adr inet6: yyyy::yyy:9bff:fe6b:4815/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:67744 errors:0 dropped:0 overruns:0 frame:0
TX packets:573467 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
RX bytes:11825579 (11.2 MiB) TX bytes:855585319 (815.9 MiB)
Interruption:169 Mémoire:dfcf0000-dfd00000

lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:21944 errors:0 dropped:0 overruns:0 frame:0
TX packets:21944 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
RX bytes:7239504 (6.9 MiB) TX bytes:7239504 (6.9 MiB)

---

My NAS DS207+ (Synology DSM 3.1) :
----------------------------------------------

RAID 1 : 2 HDD 7200 RPM 1Go + 1Go
connected @ 1000M

Settings for eth0:
Supported ports: [ ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on

---

eth0 Link encap:Ethernet HWaddr 00:YY:YY:YY:YY:AA
inet addr:YYY.YYY.YYY.55 Bcast:YYY.YYY.YYY.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:905470721 errors:0 dropped:0 overruns:0 frame:0
TX packets:212159213 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:512
RX bytes:3862174603 (3.5 GiB) TX bytes:1727729603 (1.6 GiB)
Interrupt:21

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:104197 errors:0 dropped:0 overruns:0 frame:0
TX packets:104197 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:12001416 (11.4 MiB) TX bytes:12001416 (11.4 MiB)

I also check my Zyxel switch :
- all ports are @ 1000M/Full/Off : server, client, and nas
- some ports are @ 100M : printers
- one port is @ 10M : ...

I also check cables : all are 5e or 6 (except for the cables that are in walls !! but it's probably sure that they are 5e or 6).

When I try to copy big file from SERVER to NAS or Client to NAS : I have around 15M/s ...

What can I do to increase the performance ?

NAS partition is mounted with nfs protocol.

Other tests :
--------------

Copy From Server to Client : 1 Go (with dd bs=8k) in 28sec, #36M/s.

Copy From Server to NAS : 1 Go (with dd bs=8k) in 28sec, #11M/s.

another test :
---------------

using NFSv3
Copy From Client To Server : 2 Go (with dd bs=8k) in 38sec, #55M/s.