Re: [PATCH] 2-ptrace_multi

[Avi Kivity]

Jeff Dike wrote:
> > PTRACE_MULTI can be also used to optimize many other virtualized calls,
> > e.g. to read/write all the buffers for a readv/writev/recvmsg/sendmsg
> > call at once.
> >     
>
> Here, I bet the data copying cost dominates the system call, and the
> syscall overhead is minimal.	

In addition, the aio API allows you to do that in two calls for an iovec 
of any size.

--
error compiling committee.c: too many arguments to function

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/