[sldev] AppendedAcks

[Soft]

On Thu, Apr 2, 2009 at 12:27 PM, Tateru Nino <tateru.nino at gmail.com> wrote:
> Carlo Wood wrote:
>>
>> Hey - well, I know an obvious case where we can save lots
>> and lots of bandwidth:
>>
>> Stop re-sending the same textures over and over again.
>>
>> I'm sure I have my cache not a single byte smaller than most
>> people (I have the slider all the way to the max, 1 GB), but
>> everytime I go to a new sim and then return home, everything
>> is gray and apparently has to be re-downloaded.
>
> Concur. The discard algorithm seems to be *far* too agressive, and this
> issue keeps coming up over and over. From monitoring the viewer's activity,
> there are textures that get downloaded absurd numbers of times, and many
> times within comparatively short periods of time.
>
> Add another level of hash-buckets to the directory store, if there are
> performance issues in dealing with a single directory full of files, but the
> goal is to keep the content transfers to a minimum to accomplish the job,
> right? Saves bandwidth for all, and should reduce the impact on the grid.

Are you certain these are cache misses?

Superficially, the situation would look the same if the viewer only
queued so many decode requests at a time, and all the queue slots were
filled with network fetches.