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[Qemu-devel] [PATCH V3 6/6] coroutine: reduce stack size to 64kB
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCH V3 6/6] coroutine: reduce stack size to 64kB |
Date: |
Thu, 7 Jul 2016 13:37:26 +0200 |
evaluation with the recently introduced maximum stack usage monitoring revealed
that the actual used stack size was never above 4kB so allocating 1MB stack
for each coroutine is a lot of wasted memory. So reduce the stack size to
64kB which should still give enough head room. The guard page added
in qemu_alloc_stack will catch a potential stack overflow introduced
by this commit.
Signed-off-by: Peter Lieven <address@hidden>
---
include/qemu/coroutine_int.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/qemu/coroutine_int.h b/include/qemu/coroutine_int.h
index eac323a..f84d777 100644
--- a/include/qemu/coroutine_int.h
+++ b/include/qemu/coroutine_int.h
@@ -28,7 +28,7 @@
#include "qemu/queue.h"
#include "qemu/coroutine.h"
-#define COROUTINE_STACK_SIZE (1 << 20)
+#define COROUTINE_STACK_SIZE (1 << 16)
typedef enum {
COROUTINE_YIELD = 1,
--
1.9.1
- [Qemu-devel] [PATCH V3 0/6] coroutine: mmap stack memory and stack size, Peter Lieven, 2016/07/07
- [Qemu-devel] [PATCH V3 2/6] coroutine: add a macro for the coroutine stack size, Peter Lieven, 2016/07/07
- [Qemu-devel] [PATCH V3 1/6] oslib-posix: add helpers for stack alloc and free, Peter Lieven, 2016/07/07
- [Qemu-devel] [PATCH V3 6/6] coroutine: reduce stack size to 64kB,
Peter Lieven <=
- [Qemu-devel] [PATCH V3 4/6] coroutine-sigaltstack: use helper for allocating stack memory, Peter Lieven, 2016/07/07
- [Qemu-devel] [PATCH V3 5/6] oslib-posix: add a configure switch to debug stack usage, Peter Lieven, 2016/07/07
- [Qemu-devel] [PATCH V3 3/6] coroutine-ucontext: use helper for allocating stack memory, Peter Lieven, 2016/07/07