bfq_calc_max

函数名称：In autotuning mode, max_budget is dynamically recomputed as the* amount of sectors transferred in timeout at the estimated peak* rate. This enables BFQ to utilize a full timeslice with a full* budget, even if the in-service queue is served at peak rate

函数原型：static unsigned long bfq_calc_max_budget(struct bfq_data *bfqd)

返回类型：unsigned long

参数：

类型	参数	名称
struct bfq_data *	bfqd

3001

返回:* Current estimate of the device peak rate, measured in * [(sectors/usec) / 2^BFQ_RATE_SHIFT]. The left-shift by * BFQ_RATE_SHIFT is performed to increase precision in * fixed-point calculations.乘USEC_PER_MSEC乘Convert jiffies to milliseconds and back.* Avoid unnecessary multiplications/divisions in the* two most common HZ cases:右移Shift used for peak-rate fixed precision calculations位

**调用者**
名称	描述
update_thr_responsiveness_params	Update parameters related to throughput and responsiveness, as a* function of the estimated peak rate. See comments on* bfq_calc_max_budget(), and on the ref_wr_duration array.
bfq_max_budget_store
bfq_timeout_sync_store	Leaving this name to preserve name compatibility with cfq* parameters, but this timeout is used for both sync and async.

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告