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authorJason Xing <kernelxing@tencent.com>2025-11-18 15:06:43 +0800
committerJakub Kicinski <kuba@kernel.org>2025-11-19 20:29:24 -0800
commit3505730d9042a8d26e89288ecab04e5d32794e4a (patch)
tree086d2ff78f854246e39baa7557daffd13777ba47 /net/unix/af_unix.c
parent7c9dd386020db9c46b7faf5c6fa928df2831b6fb (diff)
net: increase default NAPI_SKB_CACHE_SIZE to 128
After commit b61785852ed0 ("net: increase skb_defer_max default to 128") changed the value sysctl_skb_defer_max to avoid many calls to kick_defer_list_purge(), the same situation can be applied to NAPI_SKB_CACHE_SIZE that was proposed in 2016. It's a trade-off between using pre-allocated memory in skb_cache and saving more a bit heavy function calls in the softirq context. With this patch applied, we can have more skbs per-cpu to accelerate the sending path that needs to acquire new skbs. Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Link: https://patch.msgid.link/20251118070646.61344-2-kerneljasonxing@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/unix/af_unix.c')
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