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| author | Juan Quintela <quintela@redhat.com> | 2012-05-22 00:44:24 +0200 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2012-06-29 13:28:09 +0200 |
| commit | 5b3c96388741a99988497d734edec19c4f995cd7 (patch) | |
| tree | 1cd27ad1526c611b340bf644e0974667234f76f0 /arch_init.c | |
| parent | d24981d37e793b0a8fcde1879db19eb11fe0f975 (diff) | |
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>
Diffstat (limited to 'arch_init.c')
| -rw-r--r-- | arch_init.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch_init.c b/arch_init.c index f10692873e..3633f4c0a6 100644 --- a/arch_init.c +++ b/arch_init.c @@ -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, |