Hi,
> I agree that it does indeed look like a kernel issue (in the intel eth > driver?), however 1.5 is doing something new that triggers this. > > Any idea of a significant 1.4 -> 1.5 change that can affect what is > happening in the kernel? There are *a lot* of changes between those two major releases. But finding what exact change in haproxy triggers a kernel bug doesn't make that much sense, its not like we can fix this in haproxy. > This kernel is indeed not the stock Ubuntu kernel, but the default one > provided by the hosting company (OVH in that case)... I would really > like not having to recompile the kernel and play too much with the > production environment (sadly this issue never popped in my dev & lab > environments). Ok, so OVH provides the kernel binaries. Then you have 2 options imho: - ask OVH for help. They provide the kernel, they should probably provide support aswell or atleast update it once in a while (3.2.13 is from march 2012!). - install the ubuntu stock kernel [1]. > So any haproxy related idea would be very welcome...! Disable features like splice, epoll and accept4, compile with "linux26" instead of the "linux2628" target. Performance will probably be worse than with 1.4 and I strongly advise against this. Regards, Lukas [1] http://www.sysadminworld.com/2012/how-to-switch-to-the-standard-ubuntu-kernel-on-ovh/
