From 4b5060f357a3cb248c9359c92c1e9c42ef6434c8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Thu, 19 Jun 2014 18:27:59 +0900 Subject: glamor: Set environment variable RADEON_THREAD=0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Marek Olšák --- src/radeon_glamor.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/radeon_glamor.c b/src/radeon_glamor.c index 210ddcf2..02fa6583 100644 --- a/src/radeon_glamor.c +++ b/src/radeon_glamor.c @@ -132,6 +132,16 @@ radeon_glamor_pre_init(ScrnInfoPtr scrn) "Incompatible glamor version, required >= 0.3.0.\n"); return FALSE; } else { + /* This prevents the Gallium radeon winsys from spawning + * a separate thread for submitting command streams to + * the kernel. Improves scores of at least gtkperf and + * x11perf -putimage/-shmput/-getimage/-shmget, probably + * because glamor causes too many command stream flushes + * / too much synchronization with pending command + * streams for the separate thread to pay off. + */ + setenv("RADEON_THREAD", "0", 0); + if (glamor_egl_init(scrn, info->dri2.drm_fd)) { xf86DrvMsg(scrn->scrnIndex, X_INFO, "glamor detected, initialising EGL layer.\n"); -- cgit v1.2.3