diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-09-20 20:17:15 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-01 13:20:36 +0100 |
| commit | 8f6c4ff9e0522da9313fbff5295ae208af679fed (patch) | |
| tree | b6a000dec2cee2f62ef3a94484e1c80e77171356 /net/sched | |
| parent | 076433bd78d719b34d465c1e69eef512036b534c (diff) | |
| download | linux-8f6c4ff9e0522da9313fbff5295ae208af679fed.tar.gz | |
net_sched: sch_fq: always garbage collect
FQ performs garbage collection at enqueue time, and only
if number of flows is above a given threshold, which
is hit after the qdisc has been used a bit.
Since an RB-tree traversal is needed to locate a flow,
it makes sense to perform gc all the time, to keep
rb-trees smaller.
This reduces by 50 % average storage costs in FQ,
and avoids 1 cache line miss at enqueue time when
fast path added in prior patch can not be used.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/sch_fq.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c index 5cf3b50a24d58..681bbf34b7076 100644 --- a/net/sched/sch_fq.c +++ b/net/sched/sch_fq.c @@ -367,9 +367,7 @@ static struct fq_flow *fq_classify(struct Qdisc *sch, struct sk_buff *skb) root = &q->fq_root[hash_ptr(sk, q->fq_trees_log)]; - if (q->flows >= (2U << q->fq_trees_log) && - q->inactive_flows > q->flows/2) - fq_gc(q, root, sk); + fq_gc(q, root, sk); p = &root->rb_node; parent = NULL; |