Hi,

my output of command :

ethtool -g em1

Ring parameters for em1:
Pre-set maximums:
RX:        4096
RX Mini:    0
RX Jumbo:    0
TX:        4096

Current hardware settings:
RX:        1024
RX Mini:    0
RX Jumbo:    0
TX:        1024

before current value for RX and TX are 256 and i increased it by 1024 for both RX and TX. But still we having packet loss on interface.

How to verify that buffer full for RX and TX?

Regards,
Benjo



What does ethtool -g em1 say? A very common reason of dropping packets is that the rx and tx buffers have been full. In this case, you can increase the count with ethtool -G switch and check again.

-- Soham

On Sat, Oct 15, 2011 at 4:47 PM, Benjamin <benjo11...@gmail.com <mailto:benjo11...@gmail.com>> wrote:

     Hi,

    lspci -v



    05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network
    Connection
        Subsystem: Super Micro Computer Inc Device 040d
        Flags: bus master, fast devsel, latency 0, IRQ 18
        Memory at fb5e0000 (32-bit, non-prefetchable) [size=128K]
        I/O ports at dc00 [size=32]
        Memory at fb5dc000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [c8] Power Management version 2
        Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [e0] Express Endpoint, MSI 00
        Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Device Serial Number 00-25-90-ff-ff-39-70-0e
        Kernel driver in use: e1000e
        Kernel modules: e1000e


    Thanks,
    Benjamin



    On 10/15/2011 04:41 PM, Reindl Harald wrote:
    > Am 15.10.2011 13:09, schrieb Benjamin:
    >> OS : FEDORA 15 64 BIT
    >> LAN INTERFACE IS ONBOARD GIGABIT LAN CARD
    > this is no information
    >
    > WHAT network-card is on the board?
    > lspci is your friend!
    >
    >
    >
    >

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