From 2165d8c376b12f8d809448c31da12723a01f9f32 Mon Sep 17 00:00:00 2001
From: Tofu Linden <tofu.linden@lindenlab.com>
Date: Fri, 19 Feb 2010 12:24:44 +0000
Subject: Linux viewer: add some instrumentation to detect VM and/or RSS bloat
at runtime. This helped me identify the EXT-5552 cause (fix landing soon)
---
indra/llwindow/llwindowsdl.cpp | 78 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 77 insertions(+), 1 deletion(-)
(limited to 'indra/llwindow')
diff --git a/indra/llwindow/llwindowsdl.cpp b/indra/llwindow/llwindowsdl.cpp
index 7cd06c9c37..1266a94287 100644
--- a/indra/llwindow/llwindowsdl.cpp
+++ b/indra/llwindow/llwindowsdl.cpp
@@ -1597,12 +1597,82 @@ U32 LLWindowSDL::SDLCheckGrabbyKeys(SDLKey keysym, BOOL gain)
return mGrabbyKeyFlags;
}
+
+void check_vm_bloat()
+{
+#if LL_LINUX
+ // watch our own VM and RSS sizes, warn if we bloated rapidly
+ FILE *fp = fopen("/proc/self/stat", "r");
+ if (fp)
+ {
+ static long long last_vm_size = 0;
+ static long long last_rss_size = 0;
+ const long long significant_vm_difference = 250 * 1024*1024;
+ const long long significant_rss_difference = 50 * 1024*1024;
+
+ size_t dummy;
+ char *ptr;
+ for (int i=0; i<22; ++i) // parse past the values we don't want
+ {
+ ptr = NULL;
+ getdelim(&ptr, &dummy, ' ', fp);
+ free(ptr);
+ }
+ // 23rd space-delimited entry is vsize
+ ptr = NULL;
+ getdelim(&ptr, &dummy, ' ', fp);
+ llassert(ptr);
+ long long this_vm_size = atoll(ptr);
+ free(ptr);
+ // 24th space-delimited entry is RSS
+ ptr = NULL;
+ getdelim(&ptr, &dummy, ' ', fp);
+ llassert(ptr);
+ long long this_rss_size = getpagesize() * atoll(ptr);
+ free(ptr);
+
+ llinfos << "VM SIZE IS NOW " << (this_vm_size/(1024*1024)) << " MB, RSS SIZE IS NOW " << (this_rss_size/(1024*1024)) << " MB" << llendl;
+
+ if (llabs(last_vm_size - this_vm_size) >
+ significant_vm_difference)
+ {
+ if (this_vm_size > last_vm_size)
+ {
+ llwarns << "VM size grew by " << (this_vm_size - last_vm_size)/(1024*1024) << " MB in last frame" << llendl;
+ }
+ else
+ {
+ llinfos << "VM size shrank by " << (last_vm_size - this_vm_size)/(1024*1024) << " MB in last frame" << llendl;
+ }
+ }
+
+ if (llabs(last_rss_size - this_rss_size) >
+ significant_rss_difference)
+ {
+ if (this_rss_size > last_rss_size)
+ {
+ llwarns << "RSS size grew by " << (this_rss_size - last_rss_size)/(1024*1024) << " MB in last frame" << llendl;
+ }
+ else
+ {
+ llinfos << "RSS size shrank by " << (last_rss_size - this_rss_size)/(1024*1024) << " MB in last frame" << llendl;
+ }
+ }
+
+ last_rss_size = this_rss_size;
+ last_vm_size = this_vm_size;
+
+ fclose(fp);
+ }
+#endif // LL_LINUX
+}
+
+
// virtual
void LLWindowSDL::processMiscNativeEvents()
{
#if LL_GTK
// Pump GTK events to avoid starvation for:
- // * Embedded Gecko
// * DBUS servicing
// * Anything else which quietly hooks into the default glib/GTK loop
if (ll_try_gtk_init())
@@ -1628,6 +1698,12 @@ void LLWindowSDL::processMiscNativeEvents()
setlocale(LC_ALL, saved_locale.c_str() );
}
#endif // LL_GTK
+
+ // hack - doesn't belong here - but this is just for debugging
+ if (getenv("LL_DEBUG_BLOAT"))
+ {
+ check_vm_bloat();
+ }
}
void LLWindowSDL::gatherInput()
--
cgit v1.2.3