diff options
Diffstat (limited to 'net/sched/sch_sfq.c')
| -rw-r--r-- | net/sched/sch_sfq.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 7cc2b6e5f..c6f43badc 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -55,9 +55,9 @@ Queuing using Deficit Round Robin", Proc. SIGCOMM 95. - It is not the thing that usually called (W)FQ nowadays. It does not - use any timestamp mechanism, but instead processes queues - in round-robin order. + This is not the thing that is usually called (W)FQ nowadays. + It does not use any timestamp mechanism, but instead + processes queues in round-robin order. ADVANTAGE: @@ -66,10 +66,10 @@ DRAWBACKS: - "Stochastic" -> It is not 100% fair. - When hash collisions occur, several flows are considred as one. + When hash collisions occur, several flows are considered as one. - "Round-robin" -> It introduces larger delays than virtual clock - based schemes, and should not be used for isolation interactive + based schemes, and should not be used for isolating interactive traffic from non-interactive. It means, that this scheduler should be used as leaf of CBQ or P3, which put interactive traffic to higher priority band. @@ -82,13 +82,12 @@ This implementation limits maximal queue length to 128; maximal mtu to 2^15-1; number of hash buckets to 1024. The only goal of this restrictions was that all data - fitted to one 4K page :-). Struct sfq_sched_data is - organized in anti-cache manner: all the data for bucket - scattered over different locations. It is not good, - but it allowed to put it into 4K. + fit into one 4K page :-). Struct sfq_sched_data is + organized in anti-cache manner: all the data for a bucket + are scattered over different locations. This is not good, + but it allowed me to put it into 4K. - It is easy to increase these values, but not in flight. -*/ + It is easy to increase these values, but not in flight. */ #define SFQ_DEPTH 128 #define SFQ_HASH_DIVISOR 1024 |