Re: readahead: make context readahead more conservative

2013-08-18 Thread Fengguang Wu
On Mon, Aug 19, 2013 at 09:59:09AM +0800, Miao Xie wrote: > Hi, everyone > > On Thu, 8 Aug 2013 16:54:18 +0800, Fengguang Wu wrote: > > This helps performance on moderately dense random reads on SSD. > > > > Transaction-Per-Second numbers provided by Taobao: > > > > QPS case > >

Re: readahead: make context readahead more conservative

2013-08-18 Thread Miao Xie
Hi, everyone On Thu, 8 Aug 2013 16:54:18 +0800, Fengguang Wu wrote: > This helps performance on moderately dense random reads on SSD. > > Transaction-Per-Second numbers provided by Taobao: > > QPS case > --- >

readahead: make context readahead more conservative

2013-08-08 Thread Fengguang Wu
This helps performance on moderately dense random reads on SSD. Transaction-Per-Second numbers provided by Taobao: QPS case --- 7536disable context readahead totally w/ patch: 7129