From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sources.redhat.com
Subject: [Bug runtime/11592] New: sdt.h should have a 'disable-semaphores' override option
Date: Wed, 12 May 2010 17:16:00 -0000 [thread overview]
Message-ID: <20100512130744.11592.fche@redhat.com> (raw)
See https://bugzilla.gnome.org/show_bug.cgi?id=606044
for a situation where semaphores constitute a performance
regression. (In this case, argument setup is small compared
to the semaphore value check.)
Unless we can automate per-marker semaphore presence, we should
provide an override capability. It may need to be nothing larger
than allowing an application .c file to define
#define STAP_NO_SEMAPHORES
which then the dtrace.in-generated script would observe and avoid
defining STAP_HAS_SEMAPHORES.
--
Summary: sdt.h should have a 'disable-semaphores' override option
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: fche at redhat dot com
CC: scox at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=11592
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next reply other threads:[~2010-05-12 13:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-12 17:16 fche at redhat dot com [this message]
2010-05-12 17:43 ` [Bug runtime/11592] " alexl at redhat dot com
2010-05-12 17:48 ` fche at redhat dot com
2010-05-14 19:44 ` alexl at redhat dot com
2010-05-25 15:11 ` walters at verbum dot org
2010-05-25 15:20 ` fche at redhat dot com
2010-05-26 1:31 ` alexl at redhat dot com
2010-05-27 14:19 ` scox at redhat dot com
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