5th Feb 2013
Previously I m managed to solve it by adding a vlan on top of the em interface(no issue on igb interface), but the same solution doesn't work anymore on FreeBSD 9.1.
I have verified it by switching back to FreeBSD 9.0 and it works fine again, the server able to saturate the 1Gbps link. After that I reinstall the same server to FreeBSD 9.1 and the problem came back again, it only able to push below 210Mbps max.
Is there any driver update causing bad performance on FreeBSD 9.1 ?
By the way, below is my test environment on ESXI5 with NFS mount.
- Running a CentOS6.3 64bit guest on ESXI5
- Running dd if=/dev/sda of=/dev/null bs=1M iflag=direct in VM
- iostat showing only 20MB read per sec, and systat -if 1 on FreeBSD 9.1 showing the same result.
Thanks.
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25th Apr 2012
I'm experiencing very slow read speed when connecting to NFS server. The average read speed is only 5-10MB/s while the write speed sustain 50MB/s and 80-100MB/s on ASYNC mode.
I found some people also having the same issue when mounting the NFS with TCP instead of UDP. Understand that mount with UDP will solve the problem but the ESXI does not allow us to do it.
Both of my servers are running FreeBSD 9 Release with the following NFS parameters:
SCP speed is about 80MB from the server to the client.
Any idea?
Previously I m managed to solve it by adding a vlan on top of the em interface(no issue on igb interface), but the same solution doesn't work anymore on FreeBSD 9.1.
I have verified it by switching back to FreeBSD 9.0 and it works fine again, the server able to saturate the 1Gbps link. After that I reinstall the same server to FreeBSD 9.1 and the problem came back again, it only able to push below 210Mbps max.
Is there any driver update causing bad performance on FreeBSD 9.1 ?
By the way, below is my test environment on ESXI5 with NFS mount.
- Running a CentOS6.3 64bit guest on ESXI5
- Running dd if=/dev/sda of=/dev/null bs=1M iflag=direct in VM
- iostat showing only 20MB read per sec, and systat -if 1 on FreeBSD 9.1 showing the same result.
Thanks.
-------------------------------------------------------------------------------------
25th Apr 2012
I'm experiencing very slow read speed when connecting to NFS server. The average read speed is only 5-10MB/s while the write speed sustain 50MB/s and 80-100MB/s on ASYNC mode.
I found some people also having the same issue when mounting the NFS with TCP instead of UDP. Understand that mount with UDP will solve the problem but the ESXI does not allow us to do it.
Both of my servers are running FreeBSD 9 Release with the following NFS parameters:
Code:
nfsv4_server_enable="YES"
rpcbind_enable="YES"
nfs_server_enable="YES"
nfs_server_flags="-u -t -n 128"
mountd_flags="-r"
rpc_lockd_enable="YES"
rpc_statd_enable="YES"
SCP speed is about 80MB from the server to the client.
Any idea?