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authorEric Dumazet <eric.dumazet@gmail.com>2011-01-20 00:14:58 +0000
committerDavid S. Miller <davem@davemloft.net>2011-01-20 16:59:16 -0800
commit817fb15dfd988d8dda916ee04fa506f0c466b9d6 (patch)
tree9c857324cff66804949994cccb6050ef6b6c2aea /Documentation/ABI
parent3fbd8758b027995b677046dae46f9b41ea88c88f (diff)
net_sched: sfq: allow divisor to be a parameter
SFQ currently uses a 1024 slots hash table, and its internal structure (sfq_sched_data) allocation needs order-1 page on x86_64 Allow tc command to specify a divisor value (hash table size), between 1 and 65536. If no value is provided, assume the 1024 default size. This allows admins to setup smaller (or bigger) SFQ for specific needs. This also brings back sfq_sched_data allocations to order-0 ones, saving 3KB per SFQ qdisc. Jesper uses ~55.000 SFQ in one machine, this patch should free 165 MB of memory. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Jesper Dangaard Brouer <hawk@diku.dk> CC: Jarek Poplawski <jarkao2@gmail.com> CC: Jamal Hadi Salim <hadi@cyberus.ca> CC: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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