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[Qemu-devel] [RFC V5 48/62] qcow2: Add qcow2_dedup_update_metrics to com
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [RFC V5 48/62] qcow2: Add qcow2_dedup_update_metrics to compute dedup RAM usage. |
Date: |
Wed, 16 Jan 2013 16:48:27 +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 V5 31/62] qcow2: Use large L2 table for deduplication., (continued)
- [Qemu-devel] [RFC V5 31/62] qcow2: Use large L2 table for deduplication., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 32/62] qcow: Set large dedup hash block size., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 34/62] qcow2: Add qcow2_dedup_init and qcow2_dedup_close., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 36/62] qcow2: Enable the deduplication feature., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 38/62] qcow2: Initialize deduplication metrics., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 35/62] qcow2: Add qcow2_co_dedup_resume to restart deduplication., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 45/62] qcow2: Count deduplication refcount overflow metric., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 42/62] qcow2: Count QCowHashNode creation metrics., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 46/62] qapi: Add support for deduplication infos in qapi-schema.json., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 47/62] block: Add deduplication metrics to BlockDriverInfo., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 48/62] qcow2: Add qcow2_dedup_update_metrics to compute dedup RAM usage.,
Benoît Canet <=
- [Qemu-devel] [RFC V5 49/62] qcow2: returns deduplication metrics and status via bdrv_get_info(), Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 50/62] qapi: Return virtual block device deduplication metrics in QMP, Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 53/62] block: Add bdrv_has_dedup., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 52/62] qcow2: Add code to deduplicate cluster flagged with QCOW_OFLAG_TO_DEDUP., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 54/62] block: Add bdrv_is_dedup_running., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 55/62] block: Add bdrv_resume_dedup., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 61/62] qmp: Add block-pause-dedup., Benoît Canet, 2013/01/16
- [Qemu-devel] [RFC V5 62/62] qmp: Add block_resume_dedup., Benoît Canet, 2013/01/16
- Re: [Qemu-devel] [RFC V5 00/62] QCOW2 deduplication, Eric Blake, 2013/01/16