* David Ahern wrote:
> >>+do_mmap:
> >>+ offset = rec->session->header.data_offset + rec->bytes_written;
> >>+ if (offset < (ssize_t) rec->mmap_out_size) {
> >>+ rec->mmap_offset = offset;
> >>+ offset = 0;
> >>+ } else
> >>+
On 11/7/13, 1:03 AM, Ingo Molnar wrote:
* David Ahern wrote:
+--out-pages=::
+ Number of pages to mmap while writing data to file (must be a power of
two).
+ Specification can be appended with unit character - B/K/M/G. The
+ size is rounded up to have nearest pages power of
* David Ahern wrote:
> +--out-pages=::
> + Number of pages to mmap while writing data to file (must be a power of
> two).
> + Specification can be appended with unit character - B/K/M/G. The
> + size is rounded up to have nearest pages power of two value.
So why doesn't the code au
When recording raw_syscalls for the entire system, e.g.,
perf record -e raw_syscalls:*,sched:sched_switch -a -- sleep 1
you end up with a negative feedback loop as perf itself calls write() fairly
often. This patch handles the problem by mmap'ing the file in chunks of 64M at
a time and copies
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