diff options
Diffstat (limited to 'arch_init.c')
| -rw-r--r-- | arch_init.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch_init.c b/arch_init.c index 7fbfe91ad5..7ddbd7fa11 100644 --- a/arch_init.c +++ b/arch_init.c @@ -201,6 +201,40 @@ int64_t xbzrle_cache_resize(int64_t new_size) return pow2floor(new_size); } +/* accounting for migration statistics */ +typedef struct AccountingInfo { + uint64_t dup_pages; + uint64_t norm_pages; + uint64_t iterations; +} AccountingInfo; + +static AccountingInfo acct_info; + +static void acct_clear(void) +{ + memset(&acct_info, 0, sizeof(acct_info)); +} + +uint64_t dup_mig_bytes_transferred(void) +{ + return acct_info.dup_pages * TARGET_PAGE_SIZE; +} + +uint64_t dup_mig_pages_transferred(void) +{ + return acct_info.dup_pages; +} + +uint64_t norm_mig_bytes_transferred(void) +{ + return acct_info.norm_pages * TARGET_PAGE_SIZE; +} + +uint64_t norm_mig_pages_transferred(void) +{ + return acct_info.norm_pages; +} + static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset, int cont, int flag) { @@ -295,6 +329,7 @@ static int ram_save_block(QEMUFile *f) p = memory_region_get_ram_ptr(mr) + offset; if (is_dup_page(p)) { + acct_info.dup_pages++; save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_COMPRESS); qemu_put_byte(f, *p); bytes_sent = 1; @@ -310,6 +345,7 @@ static int ram_save_block(QEMUFile *f) save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE); qemu_put_buffer(f, p, TARGET_PAGE_SIZE); bytes_sent = TARGET_PAGE_SIZE; + acct_info.norm_pages++; } /* if page is unmodified, continue to the next */ @@ -431,6 +467,7 @@ static int ram_save_setup(QEMUFile *f, void *opaque) } XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE); XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE); + acct_clear(); } /* Make sure all dirty bits are set */ @@ -479,6 +516,7 @@ static int ram_save_iterate(QEMUFile *f, void *opaque) break; } bytes_transferred += bytes_sent; + acct_info.iterations++; /* we want to check in the 1st loop, just in case it was the 1st time and we had to sync the dirty bitmap. qemu_get_clock_ns() is a bit expensive, so we only check each some |