Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>This is surprising behavior. An intermediate function call should not speed things up like that.</p> <p>Try profiling it and see where it's spending its time. This is the best first resort to almost any "Why is my Matlab code slow?" question.</p> <pre><code>clear all profile on -timer real foo(args); profile report %read the report and save a screencap clear all profile clear bar(args); profile report </code></pre> <p>There ends the advice. Here starts the speculation.</p> <p>There are a couple things that are different in the two calls. There is workspace interaction. Calling foo() from the command line may leave the variable "ans" populated in your workspace. When called from bar(), ans will be set but then immediately cleared when bar() returns. Also, the foo() may be using evalin()/assignin() to look into workspaces up the call stack, and it may interact with variables assigned in your base workspace. The bar() function has a clean workspace.</p> <p>Depending on where bar.m is, it may actually be invoking a different foo(), or maybe resolving it slightly differently. Check your path resolution with "which foo" in both contexts.</p> <p>Depending on how "args" is defined, different inputname()s may be visible to foo.</p> <p>Also, foo() may contain pathological code that checks whether it is being called from the base workspace, or even whether it's being called by a function of a particular name, and behaves differently based on that.</p> <p>That said, these should mostly be minor interactions and shouldn't cause a slowdown of that order. I'd suspect something else was going on, maybe just exposed by slightly different calling contexts. Adding a level of indirection with bar() shouldn't be the answer. See what the profiler has to say and go from there. Exact code to reproduce will help a lot in getting assistance from the community.</p>
    singulars
    1. This table or related slice is empty.
    1. POMATLAB Magical Mystery timing behavior
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USAndrew Janke
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COMy apologies for not being forthcoming, it's not my choice. Using your advice I might be able to narrow down the problem to something small enough I can share. Thanks!
      singulars
      1. PO
      1. USJacob Lyles
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload