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[PULL 04/17] Reduce the time of checkpoint for COLO
From: |
Jason Wang |
Subject: |
[PULL 04/17] Reduce the time of checkpoint for COLO |
Date: |
Wed, 11 Nov 2020 21:11:28 +0800 |
From: "Rao, Lei" <lei.rao@intel.com>
we should set ram_bulk_stage to false after ram_state_init,
otherwise the bitmap will be unused in migration_bitmap_find_dirty.
all pages in ram cache will be flushed to the ram of secondary guest
for each checkpoint.
Signed-off-by: Lei Rao <lei.rao@intel.com>
Signed-off-by: Derek Su <dereksu@qnap.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Reviewed-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
migration/ram.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/migration/ram.c b/migration/ram.c
index 2da2b62..add5396 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3011,6 +3011,18 @@ static void decompress_data_with_multi_threads(QEMUFile
*f,
qemu_mutex_unlock(&decomp_done_lock);
}
+ /*
+ * we must set ram_bulk_stage to false, otherwise in
+ * migation_bitmap_find_dirty the bitmap will be unused and
+ * all the pages in ram cache wil be flushed to the ram of
+ * secondary VM.
+ */
+static void colo_init_ram_state(void)
+{
+ ram_state_init(&ram_state);
+ ram_state->ram_bulk_stage = false;
+}
+
/*
* colo cache: this is for secondary VM, we cache the whole
* memory of the secondary VM, it is need to hold the global lock
@@ -3054,7 +3066,7 @@ int colo_init_ram_cache(void)
}
}
- ram_state_init(&ram_state);
+ colo_init_ram_state();
return 0;
}
--
2.7.4
- [PULL 00/17] Net patches, Jason Wang, 2020/11/11
- [PULL 01/17] virtio-net: Set mac address to hardware if the peer is vdpa, Jason Wang, 2020/11/11
- [PULL 02/17] net/filter-rewriter: destroy g_hash_table in colo_rewriter_cleanup, Jason Wang, 2020/11/11
- [PULL 04/17] Reduce the time of checkpoint for COLO,
Jason Wang <=
- [PULL 06/17] colo-compare: fix missing compare_seq initialization, Jason Wang, 2020/11/11
- [PULL 07/17] colo-compare: check mark in mutual exclusion, Jason Wang, 2020/11/11
- [PULL 03/17] Optimize seq_sorter function for colo-compare, Jason Wang, 2020/11/11
- [PULL 05/17] Fix the qemu crash when guest shutdown in COLO mode, Jason Wang, 2020/11/11
- [PULL 08/17] net/colo-compare.c: Fix compare_timeout format issue, Jason Wang, 2020/11/11
- [PULL 09/17] net/colo-compare.c: Change the timer clock type, Jason Wang, 2020/11/11
- [PULL 10/17] net/colo-compare.c: Add secondary old packet detection, Jason Wang, 2020/11/11
- [PULL 11/17] net/colo-compare.c: Increase default queued packet scan frequency, Jason Wang, 2020/11/11
- [PULL 13/17] net/l2tpv3: Remove redundant check in net_init_l2tpv3(), Jason Wang, 2020/11/11
- [PULL 12/17] net: remove an assert call in eth_get_gso_type, Jason Wang, 2020/11/11