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I expect what can't launch should be this sample app but why referring it as 'vswitch'? Also patch title describes what is done, better to describe why it is done, like: examples/vhost: fix init for devices that has big max queue number btw, why a device with big max queue number causes failure in the sample app? Can you please provide more detail on the error? What and why fails on device start? > if NIC’s max queues > the default number of 128, so, we changed > the default value from 128 to 512. > > Fixes: 4796ad63ba1f ("examples/vhost: import userspace vhost application") > Cc: stable@dpdk.org > > Signed-off-by: Wenwu Ma > --- > examples/vhost/main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/examples/vhost/main.c b/examples/vhost/main.c > index bc3d71c898..36969a4de5 100644 > --- a/examples/vhost/main.c > +++ b/examples/vhost/main.c > @@ -29,7 +29,7 @@ > #include "main.h" > > #ifndef MAX_QUEUES > -#define MAX_QUEUES 128 > +#define MAX_QUEUES 512 > #endif > > /* the maximum number of external ports supported */ >