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[Qemu-devel] [RFC V1 12/14] qcow2: Add qcow2_dedup_update_metrics to com
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [RFC V1 12/14] qcow2: Add qcow2_dedup_update_metrics to compute dedup RAM usage. |
Date: |
Wed, 16 Jan 2013 17:25:06 +0100 |
---
block/qcow2-dedup.c | 13 +++++++++++++
block/qcow2.h | 1 +
2 files changed, 14 insertions(+)
diff --git a/block/qcow2-dedup.c b/block/qcow2-dedup.c
index db23b71..4305746 100644
--- a/block/qcow2-dedup.c
+++ b/block/qcow2-dedup.c
@@ -1311,3 +1311,16 @@ void qcow2_dedup_close(BlockDriverState *bs)
{
qcow2_dedup_free(bs);
}
+
+#define GTREE_NODE_SIZE sizeof(int) * 5
+
+void qcow2_dedup_update_metrics(BlockDriverState *bs)
+{
+ BDRVQcowState *s = bs->opaque;
+
+ uint64_t nb_hashs = s->dedup_metrics.ram_hash_creations -
+ s->dedup_metrics.ram_hash_deletions;
+
+ s->dedup_metrics.ram_usage = nb_hashs * GTREE_NODE_SIZE * 2;
+ s->dedup_metrics.ram_usage += nb_hashs * sizeof(QCowHashNode);
+}
diff --git a/block/qcow2.h b/block/qcow2.h
index 0729ff2..d8e8539 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -510,5 +510,6 @@ void qcow2_dedup_refcount_half_max_reached(BlockDriverState
*bs,
bool qcow2_dedup_is_running(BlockDriverState *bs);
int qcow2_dedup_init(BlockDriverState *bs);
void qcow2_dedup_close(BlockDriverState *bs);
+void qcow2_dedup_update_metrics(BlockDriverState *bs);
#endif
--
1.7.10.4
- [Qemu-devel] [RFC V1 09/14] qcow2: Count deduplication refcount overflow metric., (continued)
- [Qemu-devel] [RFC V1 09/14] qcow2: Count deduplication refcount overflow metric., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V1 07/14] qcow2: Count QCowHashNode removal from tree for metrics., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V1 06/14] qcow2: Count QCowHashNode creation metrics., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V1 10/14] qapi: Add support for deduplication infos in qapi-schema.json., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V1 14/14] qapi: Return virtual block device deduplication metrics in QMP, Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V1 13/14] qcow2: returns deduplication metrics and status via bdrv_get_info(), Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V1 11/14] block: Add deduplication metrics to BlockDriverInfo., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V1 12/14] qcow2: Add qcow2_dedup_update_metrics to compute dedup RAM usage.,
Benoît Canet <=