If the duration is long, the cache may not be hit. Create split reader cost: the duration that is taken to open a file. If the duration is long, the metadata of the file does not hit the cache. If this occurs,
* plancache.c. * * Because the rewriter and planner tend to scribble on the input, we make * a preliminary copy of the source querytree. This prevents problems in * the case that the EXPLAIN is in a portal or plpgsql function and is * executed repeatedly. (See also the same hack in...
And I have a little idea of the reason: MMU, paging, segmentation. memory. Am I right?Another question, is the FPU is the slowest to compute floating point than SSE or depending of data manipulate ?PS: I work without OS like Windows or Linux, I run on my own kernel + bootloader in...
you need put the env in front of the command rather than using export, it seems quaser build need in the command session (when case you cannot use .env) it is a replacement of text rather than run in js, so you may check the generated code to see is the actual value you want use...
U-Boot-Bootloader for BananaPI-R2/R64/R2Pro/R3. Contribute to frank-w/u-boot development by creating an account on GitHub.
And I have a little idea of the reason: MMU, paging, segmentation. memory. Am I right?Another question, is the FPU is the slowest to compute floating point than SSE or depending of data manipulate ?PS: I work without OS like Windows or Linux, I run on my own kernel + bootloader in...