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-1
votes
1answer
100 views

gro on with ethtool - Ubuntu 10.04 Server LTS

On Ubuntu 10.04 server LTS, I can't enable generic receive offload with ethool (v. 6git) # sudo ethtool -K eth0 gro on Cannot set device GRO settings: Invalid argument If I try instead to set the ...
2
votes
1answer
236 views

What are the imlications of having different TCP Chimey Offload settings?

I have a SQL Server (2008 R2) WSFC on Windows Server 2008 R2 on which I am experiencing some storage latency between the OS and SAN. The SAN admin has noted that the SAN is experiencing very little ...
1
vote
1answer
185 views

Does the FreeNAS target make use of iSCSI offload cards?

When using a FreeNAS as iSCSI target, would it use the iSCSI offload engine on cards that have it, or is it an initiator-only feature? EDIT: just to clarify, I want to know if a supported iSCSI ...
3
votes
2answers
8k views

Disable TCP-Offloading {completely, generically and easily}

I want to disable tcp-offloading ("TOE") on my debian servers. ethtool -K ..... I have some wishes, though: Integrate it cleanly into debian This reads: no rc.local, I would also like to avoid ...
7
votes
2answers
2k views

tcpdump: snaplen set to 0 but still get “Packet size limited during capture”?

Due to this problem, I'm going to sniff some packets on the MySQL server backend to see what happens: # tcpdump -vv -s0 -c 100 -i bond0 tcp port 3306 and host 192.168.3.87 -w ...
1
vote
1answer
278 views

Gigabit NIC with TCP offload and open driver

I'm looking for a gigabit Ethernet adapter with a TCP offload engine that will work nicely with a modern Linux kernel. Due to the way patches and updates are handled, I really need one that has an ...
2
votes
1answer
1k views

Does DisableTaskOffload disable all related LAN Adapter settings?

I have been getting problems disabling Checksum Offload in a lot of LAN adapters manually. Does setting the DisableTaskOffload value in the registry disable all of the related parameters regardless of ...
4
votes
6answers
788 views

What causes a delay of 100 ms in initiating an HTTP connection?

Settings: this is a quad CPU machine, plenty strong, not loaded at all (neither CPU nor network), the client is a Windows Server 2008 64bit, the server is a linux box. I have four threads that are ...