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[PATCH 03/10] Reduce the time of checkpoint for COLO
From: |
Zhang Chen |
Subject: |
[PATCH 03/10] Reduce the time of checkpoint for COLO |
Date: |
Wed, 14 Oct 2020 15:25:49 +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: leirao <lei.rao@intel.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>
---
migration/ram.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/migration/ram.c b/migration/ram.c
index 433489d633..9cfac3d9ba 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3009,6 +3009,18 @@ 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
@@ -3052,7 +3064,7 @@ int colo_init_ram_cache(void)
}
}
- ram_state_init(&ram_state);
+ colo_init_ram_state();
return 0;
}
--
2.17.1
- [PATCH 00/10] COLO project queued patches 20-Oct, Zhang Chen, 2020/10/14
- [PATCH 01/10] net/filter-rewriter: destroy g_hash_table in colo_rewriter_cleanup, Zhang Chen, 2020/10/14
- [PATCH 02/10] Optimize seq_sorter function for colo-compare, Zhang Chen, 2020/10/14
- [PATCH 03/10] Reduce the time of checkpoint for COLO,
Zhang Chen <=
- [PATCH 04/10] Fix the qemu crash when guest shutdown in COLO mode, Zhang Chen, 2020/10/14
- [PATCH 05/10] colo-compare: fix missing compare_seq initialization, Zhang Chen, 2020/10/14
- [PATCH 06/10] colo-compare: check mark in mutual exclusion, Zhang Chen, 2020/10/14
- [PATCH 07/10] net/colo-compare.c: Fix compare_timeout format issue, Zhang Chen, 2020/10/14
- [PATCH 08/10] net/colo-compare.c: Change the timer clock type, Zhang Chen, 2020/10/14
- [PATCH 09/10] net/colo-compare.c: Add secondary old packet detection, Zhang Chen, 2020/10/14