Avoid sharing interrupts in FreeBSD under ESXi

[Adrian Chadd]

... you mean if mpt and em share an interrupt, things get wedged?



adrian

On 18 June 2013 01:16, C. L. Martinez <carlopmart at gmail.com> wrote:
>  Hi all,
>
>  First, sorry for the cross-posting.
>
>  I have installed a FreeBSD 8.4 vm under an ESXi 5.1 U1 server. All
> works ok, except for interrupt usage between mpt and nic interfaces:
>
> root at fbsdtst:~ # vmstat -i
> interrupt                          total       rate
> irq1: atkbd0                           6          0
> irq6: fdc0                             9          0
> irq16: em2 mpt2                   945924          1
> irq17: em3 em6                   2124484          4
> irq18: em0 em4 em7+              5950584         11
> irq19: em1 em5 em8+           2317830055       4499
> cpu0: timer                    206119496        400
> Total                         2532970558       4916
>
>  I have enabled the following options in loader.conf:
>
> hw.pci.enable_msi="0"
> hw.pci.enable_msix="0"
>
>  without a result. Is it possible to avoid to share interrupts in
> FreeBSD when it is running as a vm? Exists some kernel option to
> resolve this (via sysctl or compiling a new kernel)?
>
> Thanks.
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