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| author | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2016-07-10 03:14:02 +0300 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2017-01-03 01:02:51 +0300 |
| commit | 09b2b8f52895addd9bf28dc5ac98ff5cc750cf9a (patch) | |
| tree | 719eb7c249bc7e6f81a2be16bc7163db8f4a749b /net/rds | |
| parent | 581d53c91cbf7b31415a9ed5e9a8b89d6af609b3 (diff) | |
| download | linux-09b2b8f52895addd9bf28dc5ac98ff5cc750cf9a.tar.xz | |
RDS: IB: add few useful cache stasts
Tracks the ib receive cache total, incoming and frag allocations.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Diffstat (limited to 'net/rds')
| -rw-r--r-- | net/rds/ib.h | 7 | ||||
| -rw-r--r-- | net/rds/ib_recv.c | 6 | ||||
| -rw-r--r-- | net/rds/ib_stats.c | 2 |
3 files changed, 15 insertions, 0 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h index 5f02b4d8f10c..c62e5513d306 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -151,6 +151,7 @@ struct rds_ib_connection { u64 i_ack_recv; /* last ACK received */ struct rds_ib_refill_cache i_cache_incs; struct rds_ib_refill_cache i_cache_frags; + atomic_t i_cache_allocs; /* sending acks */ unsigned long i_ack_flags; @@ -254,6 +255,8 @@ struct rds_ib_statistics { uint64_t s_ib_rx_refill_from_cq; uint64_t s_ib_rx_refill_from_thread; uint64_t s_ib_rx_alloc_limit; + uint64_t s_ib_rx_total_frags; + uint64_t s_ib_rx_total_incs; uint64_t s_ib_rx_credit_updates; uint64_t s_ib_ack_sent; uint64_t s_ib_ack_send_failure; @@ -276,6 +279,8 @@ struct rds_ib_statistics { uint64_t s_ib_rdma_mr_1m_reused; uint64_t s_ib_atomic_cswp; uint64_t s_ib_atomic_fadd; + uint64_t s_ib_recv_added_to_cache; + uint64_t s_ib_recv_removed_from_cache; }; extern struct workqueue_struct *rds_ib_wq; @@ -406,6 +411,8 @@ int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op); /* ib_stats.c */ DECLARE_PER_CPU(struct rds_ib_statistics, rds_ib_stats); #define rds_ib_stats_inc(member) rds_stats_inc_which(rds_ib_stats, member) +#define rds_ib_stats_add(member, count) \ + rds_stats_add_which(rds_ib_stats, member, count) unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter, unsigned int avail); diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c index 6803b75eb8bd..4b0f12679219 100644 --- a/net/rds/ib_recv.c +++ b/net/rds/ib_recv.c @@ -194,6 +194,8 @@ static void rds_ib_frag_free(struct rds_ib_connection *ic, rdsdebug("frag %p page %p\n", frag, sg_page(&frag->f_sg)); rds_ib_recv_cache_put(&frag->f_cache_entry, &ic->i_cache_frags); + atomic_add(RDS_FRAG_SIZE / SZ_1K, &ic->i_cache_allocs); + rds_ib_stats_add(s_ib_recv_added_to_cache, RDS_FRAG_SIZE); } /* Recycle inc after freeing attached frags */ @@ -261,6 +263,7 @@ static struct rds_ib_incoming *rds_ib_refill_one_inc(struct rds_ib_connection *i atomic_dec(&rds_ib_allocation); return NULL; } + rds_ib_stats_inc(s_ib_rx_total_incs); } INIT_LIST_HEAD(&ibinc->ii_frags); rds_inc_init(&ibinc->ii_inc, ic->conn, ic->conn->c_faddr); @@ -278,6 +281,8 @@ static struct rds_page_frag *rds_ib_refill_one_frag(struct rds_ib_connection *ic cache_item = rds_ib_recv_cache_get(&ic->i_cache_frags); if (cache_item) { frag = container_of(cache_item, struct rds_page_frag, f_cache_entry); + atomic_sub(RDS_FRAG_SIZE / SZ_1K, &ic->i_cache_allocs); + rds_ib_stats_add(s_ib_recv_added_to_cache, RDS_FRAG_SIZE); } else { frag = kmem_cache_alloc(rds_ib_frag_slab, slab_mask); if (!frag) @@ -290,6 +295,7 @@ static struct rds_page_frag *rds_ib_refill_one_frag(struct rds_ib_connection *ic kmem_cache_free(rds_ib_frag_slab, frag); return NULL; } + rds_ib_stats_inc(s_ib_rx_total_frags); } INIT_LIST_HEAD(&frag->f_item); diff --git a/net/rds/ib_stats.c b/net/rds/ib_stats.c index 7e78dca1f252..9252ad126335 100644 --- a/net/rds/ib_stats.c +++ b/net/rds/ib_stats.c @@ -55,6 +55,8 @@ static const char *const rds_ib_stat_names[] = { "ib_rx_refill_from_cq", "ib_rx_refill_from_thread", "ib_rx_alloc_limit", + "ib_rx_total_frags", + "ib_rx_total_incs", "ib_rx_credit_updates", "ib_ack_sent", "ib_ack_send_failure", |