[R] R 1.6.0 Solaris crash with xmalloc: out of virtual memory

[Roger Peng]

This may be caused by the memory leak found in the 'deparse' function (on
1.6.0). Maybe you should see if this happens with the latest R-patched?

-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng

On Mon, 14 Oct 2002, Don MacQueen wrote:

> 	[some de-capitalization of *SXP done manually by mailing 
> 	 list maintainer ; the originally was caught as potential spam.  MM]
> 
> I have a little R program that crashes with the message
>    xmalloc: out of virtual memory
> 
> The code has a repeat{} loop that watches the sizes of some files. 
> When there's an increase it updates things by reading the last 65 
> lines of each file, doing some calculations, and re-making a plot. 
> After about 260 updates it crashes with the message
>    xmalloc: out of virtual memory
> and returns to the OS.
> 
> I inserted calls to gc() and memory.profile().
> 
> The value of CHARSXP from memory.profile() increases linearly at a 
> rate of about 332.6 units per update, from 37178 just after R is 
> started to 123319 shortly before it crashes. None of the others 
> change much.
> 
>  From Rinternals.h,
>    #define CHARSXP  9   /* "scalar" string type (internal only)*/
> and it seems like this should give me a clue where to look in my code 
> for something that keeps grabbing more memory, but I'm not getting it.
> 
> The values returned by gc() change (see below), but I don't know if 
> the amount of change is significant.
> 
> Any suggestions would be most welcome.
> 
> Thanks
> -Don
> 
> >  version
>           _
> platform sparc-sun-solaris2.7
> arch     sparc
> os       solaris2.7
> system   sparc, solaris2.7
> status
> major    1
> minor    6.0
> year     2002
> month    10
> day      01
> language R
> 
> 
> ----------------- At the beginning -------------
> --- gc() returns:
>           used (Mb) gc trigger (Mb)
> Ncells 254150  6.8     467875 12.5
> Vcells 408499  3.2     886807  6.8
> 
> --- memory.profile() returns:
> NilSXP SymSXP ListSXP CloSXP EnvSXP PromSXP LangSXP SpecialSXP
>       1   4919  128880   1440     13      18   63607         59
> 
> BUILTINSXP CHARSXP LGLSXP - - INTSXP REALSXP CPLXSXP STRSXP
>         513   37178   1712 0 0    237    9047       8  10201
> 
>   DOTSXP ANYSXP VECSXP EXPRSXP - EXTPTRSXP WEAKREFSXP
>   1           0    341       2 0         0          0
> 
> ---------------- Just before the crash ------------
> --- gc() returns:
>           used (Mb) gc trigger (Mb)
> Ncells 347539  9.3     597831 16.0
> Vcells 566319  4.4    1103261  8.5
> 
> --- memory.profile() returns:
> NilSXP SymSXP ListSXP CloSXP EnvSXP PromSXP LangSXP SpecialSXP
>       1   4921  131330   1440     13      18   63607         59
> 
> BUILTINSXP CHARSXP LGLSXP - - INTSXP REALSXP CPLXSXP STRSXP
>         513  123319   1726 0 0    275    9308       8  10613
> 
> DOTSXP ANYSXP VECSXP EXPRSXP - EXTPTRSXP WEAKREFSXP
>       1      0    427       2 0         0          0
> 
> -- 
> --------------------------------------
> Don MacQueen
> Environmental Protection Department
> Lawrence Livermore National Laboratory
> Livermore, CA, USA
> --------------------------------------
> 
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