kernel: don't scrimp on memory on big iron

[openwrt/staging/lynxis.git] / target / linux / generic / hack-4.9 / 660-fq_codel_defaults.patch

diff --git a/target/linux/generic/hack-4.9/660-fq_codel_defaults.patch b/target/linux/generic/hack-4.9/660-fq_codel_defaults.patch
index c91ea01b50bba3ac90dc9713d594bb91b7642d90..3e6473056c586771149c40487fcaed220da168d7 100644 (file)
--- a/target/linux/generic/hack-4.9/660-fq_codel_defaults.patch
+++ b/target/linux/generic/hack-4.9/660-fq_codel_defaults.patch
@@ -3,6 +3,9 @@ From: Felix Fietkau <nbd@nbd.name>
 Date: Fri, 7 Jul 2017 17:21:53 +0200
 Subject:  hack: net: fq_codel: tune defaults for small devices
 
+Assume that x86_64 devices always have a big memory and do not need this 
+optimization compared to devices with only 32 MB or 64 MB RAM.
+
 Signed-off-by: Felix Fietkau <nbd@nbd.name>
 ---
  net/sched/sch_fq_codel.c | 2 +-
@@ -10,12 +13,15 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 
 --- a/net/sched/sch_fq_codel.c
 +++ b/net/sched/sch_fq_codel.c
-@@ -479,7 +479,7 @@ static int fq_codel_init(struct Qdisc *s
+@@ -479,7 +479,11 @@ static int fq_codel_init(struct Qdisc *s
  
        sch->limit = 10*1024;
        q->flows_cnt = 1024;
--      q->memory_limit = 32 << 20; /* 32 MBytes */
++#ifdef CONFIG_X86_64
+       q->memory_limit = 32 << 20; /* 32 MBytes */
++#else
 +      q->memory_limit = 4 << 20; /* 4 MBytes */
++#endif
        q->drop_batch_size = 64;
        q->quantum = psched_mtu(qdisc_dev(sch));
        q->perturbation = prandom_u32();