Thanks Alan. Does a fragment store only one object?
I understand: > The difficulty in making fragments for a single object contiguous is the data arrives non-contiguously. Our objects are split and stored into may-be-not-contiguous fragments. Do you think it's a good idea to tweak the GC to re-order fragments? On Wed, May 31, 2017 at 7:55 PM, Alan Carroll < solidwallofc...@yahoo-inc.com.invalid> wrote: > Because it's a circular buffer, fragments are "garbage collected" by the > write cursor wrapping around and overwriting them. > The difficulty in making fragments for a single object contiguous is the > data arrives non-contiguously. The memory cost of buffering the data would > be very large along with likely starvation issues. It might be possible to > do something during an evacuation but I don't see that being implement > anytime in the near future. > > > On Wednesday, May 31, 2017, 12:35:53 AM CDT, Anh Le Duc (2) < > anh...@vng.com.vn> wrote:Hi guys, > > It's stated that (in section Object Structure > <https://docs.trafficserver.apache.org/en/latest/developer-guide/cache- > architecture/architecture.en.html#object-structure> > ): > > Note that while the fragments of a single object are ordered they are not > necessarily contiguous, as data from different objects are interleaved as > the data arrives in Traffic Server. > > > ATS has it own garbage collector, right? There's not so much documentation > about the collector. I wonder if the collector re-orders fragments so that > fragments belonging to a certain object have chances of becoming closer > together. The reason behind this question is: I think it's better for > overall performance if objects can be stored contiguously. > > Please correct me if I'm wrong. > > Thanks for your time! > > -- > > *Anh Le (Mr.)* > > *Senior Software Engineer* > > *Zalo Technical Dept., Zalo Group, **VNG Corporation* > > 5th floor, D29 Building, Pham Van Bach Street, Hanoi, Vietnam > > *M:* (+84) 987 816 461 > > *E:* anh...@vng.com.vn > > *W: *www.vng.com.vn > <http://www.google.com/url?q=http%3A%2F%2Fwww.vng.com.vn&; > sa=D&sntz=1&usg=AFQjCNHYo7I_1mPESzfIvCNjLtAJOq8xsg> > > *“Make the Internet change Vietnamese lives”* -- *Anh Le (Mr.)* *Senior Software Engineer* *Zalo Technical Dept., Zalo Group, **VNG Corporation* 5th floor, D29 Building, Pham Van Bach Street, Hanoi, Vietnam *M:* (+84) 987 816 461 *E:* anh...@vng.com.vn *W: *www.vng.com.vn <http://www.google.com/url?q=http%3A%2F%2Fwww.vng.com.vn&sa=D&sntz=1&usg=AFQjCNHYo7I_1mPESzfIvCNjLtAJOq8xsg> *“Make the Internet change Vietnamese lives”*
