sometimes i found uncompres cost serival times,
so add boot_time event of uncompress lzloader.elf
after patch
...
disk read (real mode): 45.09ms, (+45.09ms)
uncompress lzloader.elf: 76.90ms, (+31.81ms)
TLS initialization: 77.65ms, (+0.75ms)
.init functions: 82.69ms, (+5.04ms)
SMP launched: 83.72ms, (+1.03ms)
VFS initialized: 88.67ms, (+4.95ms)
...
Signed-off-by: Wang Yu <yuw...@linux.alibaba.com>
---
arch/x64/arch-setup.cc | 5 +++++
arch/x64/boot16.S | 7 ++++++-
include/osv/boot.hh | 2 +-
loader.cc | 2 +-
4 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/arch/x64/arch-setup.cc b/arch/x64/arch-setup.cc
index 325c26a..ce81437 100644
--- a/arch/x64/arch-setup.cc
+++ b/arch/x64/arch-setup.cc
@@ -50,6 +50,7 @@ struct osv_multiboot_info_type {
struct multiboot_info_type mb;
u32 tsc_init, tsc_init_hi;
u32 tsc_disk_done, tsc_disk_done_hi;
+ u32 tsc_uncompress_done, tsc_uncompress_done_hi;
u8 disk_err;
} __attribute__((packed));
@@ -140,6 +141,10 @@ void arch_setup_free_memory()
time = (time << 32) | omb.tsc_disk_done;
boot_time.arrays[1] = { "disk read (real mode)", time };
+ time = omb.tsc_uncompress_done_hi;
+ time = (time << 32) | omb.tsc_uncompress_done;
+ boot_time.arrays[2] = { "uncompress lzloader.elf", time };
+
auto c = processor::cpuid(0x80000000);
if (c.a >= 0x80000008) {
c = processor::cpuid(0x80000008);
diff --git a/arch/x64/boot16.S b/arch/x64/boot16.S
index d8808bd..d053a3f 100644
--- a/arch/x64/boot16.S
+++ b/arch/x64/boot16.S
@@ -20,7 +20,9 @@ mb_tsc1_lo = (mb_info + 88)
mb_tsc1_hi = (mb_info + 88 + 4)
mb_tsc_disk_lo = (mb_info + 88 + 8)
mb_tsc_disk_hi = (mb_info + 88 + 12)
-mb_disk_err = (mb_info + 88 + 16)
+mb_uncompress_lo = (mb_info + 88 + 16)
+mb_uncompress_hi = (mb_info + 88 + 20)
+mb_disk_err = (mb_info + 88 + 24)
mb_cmdline = (mb_info + 16)
mb_mmap_len = (mb_info + 44)
mb_mmap_addr = (mb_info + 48)
@@ -161,6 +163,9 @@ done_e820:
mov %eax, %fs
mov %eax, %ss
call *lzentry
+ rdtsc
+ mov %eax, mb_uncompress_lo
+ mov %edx, mb_uncompress_hi
mov $loader, %eax
mov $mb_info, %ebx
call *entry
diff --git a/include/osv/boot.hh b/include/osv/boot.hh
index ec5301c..4c67410 100644
--- a/include/osv/boot.hh
+++ b/include/osv/boot.hh
@@ -20,7 +20,7 @@ public:
// relatively late (the code that takes the measure is so early it cannot
// call this one directly. Therefore, the measurements would appear in the
// middle of the list, and we want to preserve order.
- int _event = 3;
+ int _event = 4;
private:
void print_one_time(int index);
diff --git a/loader.cc b/loader.cc
index 0d97151..841e146 100644
--- a/loader.cc
+++ b/loader.cc
@@ -109,7 +109,7 @@ void premain()
}
setup_tls(inittab);
- boot_time._event=2;
+ boot_time._event=3;
boot_time.event("TLS initialization");
for (auto init = inittab.start; init < inittab.start + inittab.count;
++init) {
(*init)();
--
1.8.3.1
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