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Kernel: Shrink default userspace stack size from 4 MiB to 1 MiB

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This knocks 70 MiB off our idle footprint, (from 350 MiB to 280 MiB.)
This commit is contained in:
Andreas Kling 2022-08-15 14:30:51 +02:00
parent c1af2f28e3
commit e7d2696a56
Notes: sideshowbarker 2024-07-17 08:13:40 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/e7d2696a56
2 changed files with 2 additions and 2 deletions
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2
Kernel/API/Syscall.h
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@ -347,7 +347,7 @@ struct SC_create_thread_params {
// ... ok, if you say so posix. Guess we get to lie to people about guard page size
unsigned int guard_page_size = 0; // Rounded up to PAGE_SIZE
unsigned int reported_guard_page_size = 0; // The lie we tell callers
unsigned int stack_size = 4 * MiB; // Default PTHREAD_STACK_MIN
unsigned int stack_size = 1 * MiB; // Default PTHREAD_STACK_MIN
void* stack_location; // nullptr means any, o.w. process virtual address
# if ARCH(X86_64)
FlatPtr rdi;

2
Kernel/Thread.h
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@ -1060,7 +1060,7 @@ public:
static IterationDecision for_each(Callback);
static constexpr u32 default_kernel_stack_size = 65536;
static constexpr u32 default_userspace_stack_size = 4 * MiB;
static constexpr u32 default_userspace_stack_size = 1 * MiB;
u64 time_in_user() const { return m_total_time_scheduled_user; }
u64 time_in_kernel() const { return m_total_time_scheduled_kernel; }