Vectorized Read?

Vectorized Read?

Posted Mar 23, 2007 21:28 UTC (Fri) by zlynx (guest, #2285)
In reply to: Vectorized Read? by vmole
Parent article: The 2007 Linux Storage and File Systems Workshop

I am going on the man page for readv.

ssize_t readv(int fd, const struct iovec *vector, int count);
struct iovec {
void *iov_base; /* Starting address */
size_t iov_len; /* Number of bytes */
};

iov_base and iov_len apply to RAM addresses, not disk block or character addresses. The descriptor "fd" is read linearly for "count" iovec structures.

So, readv does *not* give you the ability to read at specific offsets. As I understand it from reading the documentation.

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