SOrry, my mistake, the conversion type was wrong.

So restrict_get_process_size is indeed consistent with vsz_limit

Now, for the memory usage of the process, getrusage gives only the /max/ of the memory used, not the current

THe only way I found is to fopen("/proc/self/status") and read the correct line. Do you have a better way ?

thank you

On 2020-11-06 14:16, Joan Moreau wrote:

ok found it,

However, it returns me some random number. Maybe I am missing something

On 2020-11-06 13:57, Aki Tuomi wrote:

Duh... src/lib/restrict-process-size.h

Should be in the installed include files as well,

/usr/include/dovecot/restrict-process-size.h

Aki

On 06/11/2020 15:56 Joan Moreau <jom@grosjo.net> wrote:


Hello
I can't find "src/lib/restrict.h" . Is it in dovecot source ?


On 2020-11-06 13:20, Aki Tuomi wrote:

Seems I had forgotten that you can use src/lib/restrict.h, in particular, restrict_get_process_size() to figure out the limit. You can combine this with getrusage to find out current usage.

Aki

On 06/11/2020 13:26 Joan Moreau <jom@grosjo.net> wrote:


yes, will do so.
It would be nice however to be able to access the actual dovecot config from the plugin side



On 2020-11-04 06:46, Aki Tuomi wrote:

You could also add it as setting for the fts_xapian plugin parameters?

Aki

On 04/11/2020 08:42 Joan Moreau <jom@grosjo.net> wrote:


For machines with low memory, I would like to detect how much ram remains available before starting indexing a mail, so I can commit everything on disk before the ram is exhausted (and break the process)
I tried to put a "fake" allocation to test if it fails, (so it can fail separately, and I can "if ram remaining is above X") but the is really not clean



On 2020-11-04 06:28, Aki Tuomi wrote:

On 04/11/2020 05:19 Joan Moreau <jom@grosjo.net> wrote:


Hello
I am looking for help around memory management
1 - How to get the current value of "vsz_limit" from inside a plugin (namely https://github.com/grosjo/fts-xapian/ ) , especially for indexer-worker
2 - Is there a macro or function in dovecot to get the remaining free memory from this vsz value ?
Thank you

Hi Joan,

I don't think there is a feasible way to access this setting as of now. Is there a reason you need this? We usually recommend setting vsz_limit=0 for indexer-worker.

Aki