diff options
| author | Havoc Pennington <hp@redhat.com> | 2003-05-11 07:59:08 +0000 |
|---|---|---|
| committer | Havoc Pennington <hp@redhat.com> | 2003-05-11 07:59:08 +0000 |
| commit | ab10ae902d8aa7c2b98fd080a7458127b1b8e648 (patch) | |
| tree | b566d610ee13aa1a4ab9013eb7d19eb3dd7ad1c8 /ChangeLog | |
| parent | 27b694f6e109c78c633ddb8d96f524e46e536f4e (diff) | |
2003-05-11 Havoc Pennington <hp@pobox.com>
Write a "test-profile" that does echo client-server with threads;
profile reveals lock contention, memcpy/realloc of buffers, and
UTF-8 validation as hot spots. 20% of lock contention eliminated
with dbus_atomic_inc/dec implementation on x86. Much remaining
contention is global mempool locks for GList and DBusList.
* dbus/dbus-sysdeps.c (_dbus_atomic_inc, _dbus_atomic_dec): add
x86 implementation
* dbus/dbus-connection.c (struct DBusConnection): use
dbus_atomic_t for the reference count
* dbus/dbus-message.c (struct DBusMessage): declare
dbus_atomic_t values as volatile
* configure.in: code to detect ability to use atomic integer
operations in assembly, from GLib patch
* dbus/dbus-internals.c (_dbus_verbose_real): call getpid every
time, tired of it being wrong in threads and forked processes
* glib/test-profile.c: a little program to bounce messages back
and forth between threads and eat CPU
* dbus/dbus-connection.c: add debug spew macros for debugging
thread locks; include config.h at top; fix deadlock in
dbus_connection_flush()
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -1,3 +1,33 @@ +2003-05-11 Havoc Pennington <hp@pobox.com> + + Write a "test-profile" that does echo client-server with threads; + profile reveals lock contention, memcpy/realloc of buffers, and + UTF-8 validation as hot spots. 20% of lock contention eliminated + with dbus_atomic_inc/dec implementation on x86. Much remaining + contention is global mempool locks for GList and DBusList. + + * dbus/dbus-sysdeps.c (_dbus_atomic_inc, _dbus_atomic_dec): add + x86 implementation + + * dbus/dbus-connection.c (struct DBusConnection): use + dbus_atomic_t for the reference count + + * dbus/dbus-message.c (struct DBusMessage): declare + dbus_atomic_t values as volatile + + * configure.in: code to detect ability to use atomic integer + operations in assembly, from GLib patch + + * dbus/dbus-internals.c (_dbus_verbose_real): call getpid every + time, tired of it being wrong in threads and forked processes + + * glib/test-profile.c: a little program to bounce messages back + and forth between threads and eat CPU + + * dbus/dbus-connection.c: add debug spew macros for debugging + thread locks; include config.h at top; fix deadlock in + dbus_connection_flush() + 2003-05-08 Havoc Pennington <hp@pobox.com> * dbus/dbus-spawn.c: s/_exit/exit/ because it was keeping gcov |