On Mon, Feb 13, 2012 at 5:03 PM, zhangcheng <zhangch...@jike.com> wrote:
> ** > > I think the keycaches and rowcahches are bothe persisted to disk when > shutdown, and restored from disk when restart, then improve the performance. > Thanks - that would explain at least some of what I am seeing cheers > > 2012-02-13 > ------------------------------ > zhangcheng > ------------------------------ > *发件人：* Franc Carter > *发送时间：* 2012-02-13 13:53:56 > *收件人：* user > *抄送：* > *主题：* keycache persisted to disk ? > > Hi, > > I am testing Cassandra on Amazon and finding performance can vary fairly > wildly. I'm leaning towards it being an artifact of the AWS I/O system but > have one other possibility. > > Are keycaches persisted to disk and restored on a clean shutdown and > restart ? > > cheers > > -- > > *Franc Carter* | Systems architect | Sirca Ltd > <marc.zianideferra...@sirca.org.au> > > franc.car...@sirca.org.au | www.sirca.org.au > > Tel: +61 2 9236 9118 > > Level 9, 80 Clarence St, Sydney NSW 2000 > > PO Box H58, Australia Square, Sydney NSW 1215 > > -- *Franc Carter* | Systems architect | Sirca Ltd <marc.zianideferra...@sirca.org.au> franc.car...@sirca.org.au | www.sirca.org.au Tel: +61 2 9236 9118 Level 9, 80 Clarence St, Sydney NSW 2000 PO Box H58, Australia Square, Sydney NSW 1215
