On Tue, Sep 18, 2012 at 11:05:42AM +0200, Andrew Jones wrote:
> Please read the link I posted to the Perl documentation. The standard
> Perl signal handling doesn't support SA_RESTART. The Perl developers
> found it could lead to data corruption. The patch above attempts to
> replace the standard s
On Mon, Sep 17, 2012 at 08:55:43AM -0600, David Ahern wrote:
> On 9/14/12 12:10 PM, Andrew Jones wrote:
> >On Fri, Sep 14, 2012 at 10:05:03AM -0600, David Ahern wrote:
> >>On 9/14/12 9:39 AM, Andrew Jones wrote:
> >>>
> >>>I recently tried 'perf script rwtop', and it immediately failed with
> >>>'f
On 9/17/12 11:12 AM, Arnaldo Carvalho de Melo wrote:
Its possible that changes made to support non tracepoint events
introduced this problem, so perhaps bisecting it, as this wasn't present
some time ago, i.e. those big numbers :-\
git bisect failed miserably for me. But, pondering a bit on ch
Em Mon, Sep 17, 2012 at 10:32:36AM -0600, David Ahern escreveu:
> On 9/17/12 10:02 AM, Arnaldo Carvalho de Melo wrote:
> >Em Mon, Sep 17, 2012 at 09:16:19AM -0600, David Ahern escreveu:
> >>On 9/17/12 8:55 AM, David Ahern wrote:
> >>>2. the rwtop.pl script is not handling negative return values ($r
On 9/17/12 10:02 AM, Arnaldo Carvalho de Melo wrote:
Em Mon, Sep 17, 2012 at 09:16:19AM -0600, David Ahern escreveu:
On 9/17/12 8:55 AM, David Ahern wrote:
2. the rwtop.pl script is not handling negative return values ($ret < 0)
properly -- the '$ret > 0' check is succeeding even though $ret is
Em Mon, Sep 17, 2012 at 09:16:19AM -0600, David Ahern escreveu:
> On 9/17/12 8:55 AM, David Ahern wrote:
> >2. the rwtop.pl script is not handling negative return values ($ret < 0)
> >properly -- the '$ret > 0' check is succeeding even though $ret is
> >negative (e.g., -EAGAIN) leading to astronomi
On 9/17/12 8:55 AM, David Ahern wrote:
2. the rwtop.pl script is not handling negative return values ($ret < 0)
properly -- the '$ret > 0' check is succeeding even though $ret is
negative (e.g., -EAGAIN) leading to astronomical read values
I think perl is treating $ret as an unsigned integer.
On 9/14/12 12:10 PM, Andrew Jones wrote:
On Fri, Sep 14, 2012 at 10:05:03AM -0600, David Ahern wrote:
On 9/14/12 9:39 AM, Andrew Jones wrote:
I recently tried 'perf script rwtop', and it immediately failed with
'failed to read event header'. Running it through strace I found that the
when rwto
On Fri, Sep 14, 2012 at 10:05:03AM -0600, David Ahern wrote:
> On 9/14/12 9:39 AM, Andrew Jones wrote:
> >
> >I recently tried 'perf script rwtop', and it immediately failed with
> >'failed to read event header'. Running it through strace I found that the
> >when rwtop.pl is reading from the pipe,
On 9/14/12 9:39 AM, Andrew Jones wrote:
I recently tried 'perf script rwtop', and it immediately failed with
'failed to read event header'. Running it through strace I found that the
when rwtop.pl is reading from the pipe, and gets one of it's alarms, that
the ERESTARTSYS seems to confuse it - c
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