From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:41982) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TvVqm-0005b8-EP for qemu-devel@nongnu.org; Wed, 16 Jan 2013 11:28:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TvVqj-0007Xx-Rj for qemu-devel@nongnu.org; Wed, 16 Jan 2013 11:28:28 -0500 Received: from nodalink.pck.nerim.net ([62.212.105.220]:43380 helo=paradis.irqsave.net) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TvVqj-0007Xr-JY for qemu-devel@nongnu.org; Wed, 16 Jan 2013 11:28:25 -0500 From: =?UTF-8?q?Beno=C3=AEt=20Canet?= Date: Wed, 16 Jan 2013 17:25:06 +0100 Message-Id: <1358353508-5369-13-git-send-email-benoit@irqsave.net> In-Reply-To: <1358353508-5369-1-git-send-email-benoit@irqsave.net> References: <1358353508-5369-1-git-send-email-benoit@irqsave.net> Subject: [Qemu-devel] [RFC V1 12/14] qcow2: Add qcow2_dedup_update_metrics to compute dedup RAM usage. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, pbonzini@redhat.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= , stefanha@redhat.com --- 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