On 2005-11-03 22:56, kamal kc <[EMAIL PROTECTED]> wrote: >>> for my compression/decompression i use string tables and >>> temporary buffers which take about 14KB of memory per >>> packet. >> >> If you're allocating 14 KB of data just to send >> (approximately) 1.4 KB >> and then you throw away the 14 KB immediately, it >> sounds terrible. > > yes that's true. > > since i am using the adaptive LZW compression scheme it > requires construction of string table for > compression/decompression. So an ip packet of size 1500 bytes > requires a table of size (4KB + 4KB + 2KB = 12KB).
I may be stating the obvious or something totally wrong, but couldn't the string table be constructed once instead of each time a packet goes down? It is my intuition that this would perform much much better than re-doing the work of the string table each time a packet goes out. > what would be the best possible way to allocate/deallocate 14KB > memory per packet without causing vm_faults ?? Bearing in mind that packets may be as small as 34 bytes, there's no good way, IMHO. - Giorgos _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
