Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Lars Ellenberg <lars.ellenberg at linbit.com> schrieb: > On Mon, Jan 12, 2009 at 04:30:03PM +0100, Stefan Seifert wrote: > > But I'm curious: why does it hurt? A naive view would be that it won't help, > > but at least not hurt, since it would just not throttle anything. Or do you > > mean, that it will hurt normal operations which is quite understandable? > > because the way it is implemented. > sort of like this: > N = sync_rate / 32 kB * 0.1 second. > that much requests (32kB each) will be requested in one batch. (ok, tried...) > so if you request much more than it can handle, > it may stumble over its own feet. > > it is really meant only as a throttle. > > if you don't want it to throttle, > set it _slightly_ above the physical limit. > > if you set it too large, it hurts. > how much it hurts depends largely on the io backend, > it may be quite noticeable, or only measurable. > but it hurts. This should go into the docs IMHO. Lars