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Only calculate expected_time for stage 2 

ram_save_remaining() is an expensive operation when there is a lot of memory.
So we only call the function when we need it.

Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Juan Quintela 2012-05-22 00:44:24 +02:00
parent d24981d37e
commit 5b3c963887
1 changed files with 8 additions and 5 deletions
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13
arch_init.c
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@ -314,7 +314,6 @@ int ram_save_live(QEMUFile *f, int stage, void *opaque)
ram_addr_t addr;
uint64_t bytes_transferred_last;
double bwidth = 0;
uint64_t expected_time = 0;
int ret;
if (stage < 0) {
@ -391,12 +390,16 @@ int ram_save_live(QEMUFile *f, int stage, void *opaque)
qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
if (stage == 2) {
uint64_t expected_time;
expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n",
expected_time, migrate_max_downtime());
DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n",
expected_time, migrate_max_downtime());
return (stage == 2) && (expected_time <= migrate_max_downtime());
return expected_time <= migrate_max_downtime();
}
return 0;
}
static inline void *host_from_stream_offset(QEMUFile *f,