Topic: file access slow

[hegedusa]

I'm fairly new to SMEserver and wanted to check I've not got a problem. I've set up SMEserver on a new Dell Poweredge server with 2 x 500GB sata drives, mirrrored. using my standard 100baseT network, I get the following speeds, approximately, when copying files to/from my windows Vista machine:

Upload (i.e. copying to server): 10-11MB per second
download (i.e. copying from server): 5-7MB per second

I then tried it with a 1000BaseT switch - and the ethernet ports on my PC and the server are gigabit ports. I get the following rates:

Upload: 25-30MB per second
download: 5-7MB per second

Is this normal - I would have expected a higher read rate? What is causing a bottleneck there? I have yet to test this with another PC.

using the ethtool eth0 command I get:

[root@aahserver ~]# ethtool eth0
Settings for eth0:
        Supported ports: [ MII ]
        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

so I suspect it's something to do with either the speed of access of the raid, or windows Vista just being slow copying files off the network. I'd be grateful for any pointers.

[zatnikatel]

It is a windows pissta (vista) problem do a search on google there are quite a few pages on how slow that bloated OS is
so it is not the SME server that is a problem but vista is
this should fix your problem give it a go it works for a lot of people but not every one vista has many issues

Start >> Control Panel >> Programs and Features

Click on " Turn windows features on or off" on the left side of the panel

Takes a sec to load all the features

Uncheck "Remote Differential Compression"

[cactus]

I'm fairly new to SMEserver and wanted to check I've not got a problem. I've set up SMEserver on a new Dell Poweredge server with 2 x 500GB sata drives, mirrrored. using my standard 100baseT network, I get the following speeds, approximately, when copying files to/from my windows Vista machine:

Upload (i.e. copying to server): 10-11MB per second
download (i.e. copying from server): 5-7MB per second

Theoretically a 100BaseT switch has a speed of 100Mbit/s, which is about 12.5Mbyte/s (since 8 bits make 1 byte), since communication protocols do some error checking (sending checksums back and forth) as well some overhead is being sent over the so when you are reaching 11MByte as a upload speed that would be quite nice.

I then tried it with a 1000BaseT switch - and the ethernet ports on my PC and the server are gigabit ports. I get the following rates:

Upload: 25-30MB per second
download: 5-7MB per second

Is this normal - I would have expected a higher read rate? What is causing a bottleneck there? I have yet to test this with another PC.

In this case you are right, you should theoretically get a maximum transfer of 125Mbyte/s, but the higher your network speed is, the more other parts could become the bottleneck as a chain is only as strong as it's weakest link.