ram: iterate phase
We only need to synchronize the bitmap when the number of dirty pages is low. Not every time that we call the function. Signed-off-by: Juan Quintela <quintela@redhat.com>
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10
arch_init.c
10
arch_init.c
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@ -348,8 +348,6 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
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int i;
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int i;
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uint64_t expected_time;
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uint64_t expected_time;
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memory_global_sync_dirty_bitmap(get_system_memory());
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bytes_transferred_last = bytes_transferred;
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bytes_transferred_last = bytes_transferred;
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bwidth = qemu_get_clock_ns(rt_clock);
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bwidth = qemu_get_clock_ns(rt_clock);
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@ -398,7 +396,13 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
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DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n",
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DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n",
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expected_time, migrate_max_downtime());
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expected_time, migrate_max_downtime());
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return expected_time <= migrate_max_downtime();
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if (expected_time <= migrate_max_downtime()) {
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memory_global_sync_dirty_bitmap(get_system_memory());
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expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
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return expected_time <= migrate_max_downtime();
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}
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return 0;
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}
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}
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static int ram_save_complete(QEMUFile *f, void *opaque)
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static int ram_save_complete(QEMUFile *f, void *opaque)
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