Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>swap may not be the red herring previously suggested. How big is the python process in question just before the <code>ENOMEM</code>?</p> <p>Under kernel 2.6, <code>/proc/sys/vm/swappiness</code> controls how aggressively the kernel will turn to swap, and <code>overcommit*</code> files how much and how precisely the kernel may apportion memory with a wink and a nod. Like your facebook relationship status, <a href="http://www.kernel.org/doc/Documentation/sysctl/vm.txt" rel="noreferrer">it's complicated</a>.</p> <blockquote> <p><em>...but swap is actually available on demand (according to the web host)...</em></p> </blockquote> <p>but not according to the output of your <code>free(1)</code> command, which shows no swap space recognized by your server instance. Now, your web host may certainly know much more than I about this topic, but virtual RHEL/CentOS systems I've used have reported swap available to the guest OS.</p> <p>Adapting <a href="http://www.kernel.org/doc/Documentation/sysctl/vm.txt" rel="noreferrer">Red Hat KB Article 15252</a>:</p> <blockquote> <p>A Red Hat Enterprise Linux 5 system will run just fine with no swap space at all as long as the sum of anonymous memory and system V shared memory is less than about 3/4 the amount of RAM. .... Systems with 4GB of ram or less <em>[are recommended to have]</em> a minimum of 2GB of swap space.</p> </blockquote> <p>Compare your <code>/proc/sys/vm</code> settings to a plain CentOS 5.3 installation. Add a swap file. Ratchet down <code>swappiness</code> and see if you live any longer.</p>
    singulars
    1. This table or related slice is empty.
    1. POPython subprocess.Popen "OSError: [Errno 12] Cannot allocate memory"
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USpilcrow
    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
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COWhat's the best way to check the size of the python process? ps?
      singulars
      1. PO
      1. USDavidM
    2. COsomething like `ps -o user,pid,vsz="Mem(Kb)" -o cmd $PYTHON_PID`, or top(1), should do it.
      singulars
      1. PO
      1. USpilcrow
 

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