sas inventory optimization

input to filter the observed lines read into the PDV to reduce CPU uptimeThe number of I/O times refers to the number of times the communication between the external data and the buffers, and the reduced way is certainly not through the where/if and other statements, only possible through BUFNO, BufSize, Sasfile and other options5:keep/dropDemonstrate the role of keep and drop for dataKeep, drop after buffer reduces the number of variables in the input PDV and reduces CPU timeKeep, drop before

company.salesClose;Summarize1:if need to repeatedly process a SAS data file that would fit entirely in Memory,use the Sasfile statement to reduce I /O and some CPU usage2: If You use thesasfile statement and the SAS data file would not fit entirely in memory, the code would EXECU TE, but there might is a degradation in performance3: If only a part of the file is repeated, it is best to use sasfile, so as

utility with PROC SORT. (It's a third-party package that works better than proc for a particular data set.)5.1:using the sortpgm= System OptionTells SAS whether to use the SAS sort, to use the host sort, or to determine which sort utility are best For the data set.Specify which sorting strategy to use or let SAS choose the best5.2:using the sortcutp= System Opti

requirement, you will of course use the strlen () function. This function executes quite quickly because it does not do any calculations and only returns the length of the known string stored in the Zval structure (the built-in data structure of C, used to store PHP variables).23, not all cases must use object-oriented development, object-oriented tends to be very expensive, each method and object calls will consume a lot of memory.24. Unless the script can be cached, it will be recompiled ever

PHP code optimization Tips for a large inventory The purpose of PHP optimization is to spend the least amount of time on the fastest running speed and the easiest to maintain code. This article gives you a comprehensive optimization technique. 1. Echo is faster than print. 2. Use Echo's multiple parameters instead of