Thank you very much.
At 2015-12-23 17:32:26, "Richard Hipp" <drh at sqlite.org> wrote: >On 12/23/15, ??? <2004wqg2008 at 163.com> wrote: >> HI,all >> SQLite retrieves the compressed records is slower than the uncompressed >> records about 30%. >> How can improve the problem? and anyone any suggustion? >> > >Have you run your system in a profiler to determine where the extra >30% time is being used? If the extra time is inside of inflate() (or >whatever other decompression algorithm you are using) or within >rijndaelDecrypt() (or whatever other decryption algorithm you are >using) then probably your only solution will be to disable encryption >and/or compression. There is an engineering trade-off here. > >Please run your system in a profiler and send us the results. Perhaps >we can spot other opportunities to improve performance. > >Also please send as many details about your system as possible. What >kind of hardware are you using? What operating system? Which >compression and encryption algorithms are you using? How large is >your dataset? What kinds of queries are you running? Which specific >version of the NDS dev-kit are you running? > >Probably you should send us the above information through your secure >NDS support channel, rather than here in this public forum. > >-- >D. Richard Hipp >drh at sqlite.org >_______________________________________________ >sqlite-users mailing list >sqlite-users at mailinglists.sqlite.org >http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
