vsz_limit

[Joan Moreau]

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 at 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 at 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 at 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 at 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
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