Greetings, and thanks so much! It appears that all is working as intended, that gc is triggered and keeping the active heap to about 2.8Gb (or 3.9Gb with relocatable copy area) of a detected max of 5.3Gb (see core pages, and physical memory). At the end of this experiment, the rss of this process as viewed from a separate shell should confirm these figures. So I do not think gcl is expanding into swap here.
As for the /proc/meminfo, all I can say is that the build employs many other programs as well. Might be interesting to correlate this figure with the various stages of the build. In other words, how much just to run the debian/rules build target, etc. Santiago Vila <sanv...@unex.es> writes: > On Mon, 25 Jul 2016, Camm Maguire wrote: > >> If this is happening, then it is indeed a bug. The intent is to use >> physical ram only by default unless the application itself insists on >> more. Going into swap by default obviously defeats the performance goal >> of expanding the memory anyway. You can look into this by >> >> gcl >> >(room t) >> >> and >> >> maxima >> (..) :lisp (room t) >> (..) :lisp (setq si::*notify-gbc* t) >> (..) run_testsuite(); >> (..) :lisp (room t) >> >> If you can post the results for this on the 4/4 machine you describe >> above I can see if we have a problem. > > Sorry for the late reply. > > I attach the results for maxima, on a machine with 6GB RAM and 4GB swap. > > I don't know how to interpret the results. In addition to the test you > requested, when I do this > > grep "Committed_AS:" /proc/meminfo > > I get this before running maxima: > > Committed_AS: 254276 kB > > and this after the test finished, before exiting maxima: > > Committed_AS: 6878284 kB > > I guess this does still not explain why Committed_AS: grows so much > when I'm actually trying to build the Debian package. > > Thanks. > > (sid)buildd@skywalker1:~$ maxima > > Maxima 5.38.0 http://maxima.sourceforge.net > using Lisp GNU Common Lisp (GCL) GCL 2.6.12 > Distributed under the GNU Public License. See the file COPYING. > Dedicated to the memory of William Schelter. > The function bug_report() provides bug reporting information. > (%i1) (%i1) :lisp (room t) > > 1828/1828 88.8% CONS FIXNUM SHORT-FLOAT LONG-FLOAT > BIT-VECTOR PATHNAME SPICE > 220/220 99.8% ARRAY CHARACTER PACKAGE HASH-TABLE VECTOR > RANDOM-STATE CCLOSURE CLOSURE > 67/67 56.7% STRING BIGNUM RATIO COMPLEX > 399/399 98.8% STRUCTURE > 1/1 65.2% STREAM > 46/46 99.4% CFUN CFDATA > 592/592 99.8% SFUN SYMBOL READTABLE GFUN VFUN AFUN > > 6400/6400 contiguous (30 blocks) > 1173337 hole > 216/216 99.9% relocatable > > 3153 pages for cells > > 9769 total pages in core > 9769 current core maximum pages > 216 pages reserved for gc > 3519614 pages available for adding to core > 35556 pages reserved for core exhaustion > > 3565155 maximum pages > > > Key: > > WS: words per struct > UP: allocated pages > MP: maximum pages > FI: fraction of cells in use on allocated pages > GC: number of gc triggers allocating this type > > word size: 64 bits > page size: 4096 bytes > heap start: 0xE81000 > heap max : 0x368365000 > shared library start: 0x0 > cstack start: 0x0 > cstack mark offset: 0 bytes > cstack direction: downward > cstack alignment: 32 bytes > cstack max: 16001 bytes > immfix start: 0x8000000000000000 > immfix size: 4611686018427387904 fixnums > physical memory: 1299534 pages > (%i1) (%i1) :lisp (setq si::*notify-gbc* t) > > T > (%i1) (%i1) run_testsuite(); > Running tests in rtest_rules: 103/103 tests passed > Running tests in rtestnset: 597/597 tests passed > Running tests in rtest1: 180/180 tests passed (not counting 1 expected errors) > Running tests in rtest1a: 27/27 tests passed > Running tests in rtest2: 144/144 tests passed (not counting 2 expected errors) > Running tests in rtest4: 93/93 tests passed > Running tests in rtest5: > ********************** Problem 78 *************** > Input: > describe(sin) > > > Result: > > error-catch > > This differed from the expected result: > true > start address -T 0x28ee010 start address -T 0x291e650 start address -T > 0x2925ce0 start address -T 0x292a1a0 start address -T 0x292e660 start address > -T 0x2936f20 start address -T 0x293c010 start address -T 0x293fb70 > 79/80 tests passed > > The following 1 problem failed: (78) > Running tests in rtest6: 39/39 tests passed > Running tests in rtest6a: 62/62 tests passed > Running tests in rtest6b: 16/16 tests passed > Running tests in rtest7: 85/85 tests passed > Running tests in rtest9: 89/89 tests passed > Running tests in rtest9a: 76/76 tests passed > Running tests in rtest10: 62/62 tests passed (not counting 2 expected errors) > Running tests in rtest11: 181/181 tests passed > Running tests in rtest13: 23/23 tests passed > Running tests in rtest13s: 17/17 tests passed > Running tests in rtest14: [GC for 234547 CONS pages..(T=25).GC finished] > [GC for 188813 RELOCATABLE-BLOCKS pages..(T=19).GC finished] > [GC for 140149 STRUCTURE pages..(T=21).GC finished] > 418/418 tests passed > Running tests in rtest15: [GC for 234547 CONS pages..(T=18).GC finished] > 334/334 tests passed > Running tests in rtest16: 540/540 tests passed > Running tests in rtestode: 90/90 tests passed > Running tests in rtestode_zp: 30/30 tests passed > Running tests in rtest3: [GC for 235957 CONS pages..(T=22).GC finished] > 149/149 tests passed > Running tests in rtest8: 164/164 tests passed > Running tests in rtest12: 79/79 tests passed (not counting 2 expected errors) > Running tests in rexamples: 137/137 tests passed > Running tests in rtesthyp: [GC for 16574 SFUN pages..(T=14).GC finished] > 423/423 tests passed (not counting 6 expected errors) > Running tests in rtest_hypgeo: 291/291 tests passed (not counting 1 expected > errors) > Running tests in rtestmt19937: 15/15 tests passed > Running tests in rtest_allnummod: 544/544 tests passed > Running tests in rtestconjugate: 136/136 tests passed > Running tests in rtestsum: 306/306 tests passed (not counting 4 expected > errors) > Running tests in rtest_trig: 160/160 tests passed > Running tests in rtest_zeta: 22/22 tests passed > Running tests in rtest_diff_invtrig: 22/22 tests passed > Running tests in rtest_scalarp: 20/20 tests passed > Running tests in rtest_everysome: 84/84 tests passed > Running tests in rtestint: [GC for 199312 RELOCATABLE-BLOCKS pages..(T=20).GC > finished] > [GC for 2992 SYMBOL pages..(T=21).GC finished] > 287/287 tests passed > Running tests in rtest_numth: [GC for 235957 CONS pages..(T=22).GC finished] > 201/201 tests passed > Running tests in rtestifactor: 25/25 tests passed > Running tests in rtest_equal: 207/207 tests passed (not counting 2 expected > errors) > Running tests in rtest_abs: 93/93 tests passed > Running tests in rtest_taylor: [GC for 235957 CONS pages..(T=22).GC finished] > [GC for 18660 ARRAY pages..(T=20).GC finished] > 149/149 tests passed (not counting 8 expected errors) > Running tests in rtest_dot: 60/60 tests passed > Running tests in rtest_mset: 92/92 tests passed > Running tests in rtest_boolean: 116/116 tests passed > Running tests in rtest_round: 101/101 tests passed > Running tests in rtest_map: 99/99 tests passed (not counting 3 expected > errors) > Running tests in rtest_sign: 326/326 tests passed (not counting 7 expected > errors) > Running tests in rtest_algebraic: [GC for 22699 ARRAY pages..(T=20).GC > finished] > 45/45 tests passed > Running tests in rtest_gamma: [GC for 225475 RELOCATABLE-BLOCKS > pages..(T=17).GC finished] > [GC for 140149 STRUCTURE pages..(T=24).GC finished] > [GC for 255618 RELOCATABLE-BLOCKS pages..(T=17).GC finished] > 747/747 tests passed > Running tests in rtest_expintegral: [GC for 140149 STRUCTURE pages..(T=24).GC > finished] > [GC for 255618 RELOCATABLE-BLOCKS pages..(T=18).GC finished] > 210/210 tests passed > Running tests in rtest_signum: 50/50 tests passed > Running tests in rtest_lambert_w: 57/57 tests passed > Running tests in rtest_elliptic: [GC for 3308 SYMBOL pages..(T=24).GC > finished] > 87/87 tests passed > Running tests in rtest_integrate: [GC for 27264 SFUN pages..(T=22).GC > finished] > [GC for 3308 SYMBOL pages..(T=21).GC finished] > [GC for 22699 ARRAY pages..(T=19).GC finished] > [GC for 22699 ARRAY pages..(T=19).GC finished] > [GC for 22699 ARRAY pages..(T=18).GC finished] > [GC for 22699 ARRAY pages..(T=21).GC finished] > [GC for 260145 RELOCATABLE-BLOCKS pages..(T=17).GC finished] > [GC for 235957 CONS pages..(T=22).GC finished] > [GC for 235957 CONS pages..(T=22).GC finished] > 812/812 tests passed > Running tests in rtest_integrate_special: 53/53 tests passed > Running tests in rtest_sqrt: 313/313 tests passed (not counting 1 expected > errors) > Running tests in rtest_carg: 55/55 tests passed (not counting 2 expected > errors) > Running tests in rtest_log: [GC for 235957 CONS pages..(T=23).GC finished] > 121/121 tests passed > Running tests in rtest_power: 72/72 tests passed (not counting 5 expected > errors) > Running tests in rtestdefstruct: 32/32 tests passed > Running tests in rtest_limit: [GC for 235957 CONS pages..(T=23).GC finished] > 200/200 tests passed > Running tests in rtest_powerseries: 67/67 tests passed > Running tests in rtest_laplace: 98/98 tests passed (not counting 11 expected > errors) > Running tests in rtest_plotoptions: 1/1 tests passed > > Error summary: > Error found in /usr/share/maxima/5.38.0/tests/rtest5.mac, problem: > (78) > 1 test failed out of 10,614 total tests. > real time : 82.540 secs > run-gbc time : 72.059 secs > child run time : 0.360 secs > gbc time : 5.949 secs > (%o0) done > (%i1) (%i1) :lisp (room t) > > 235957/235957 94.8% 9 CONS FIXNUM SHORT-FLOAT LONG-FLOAT > BIT-VECTOR PATHNAME SPICE > 22699/22699 39.5% 6 ARRAY CHARACTER PACKAGE HASH-TABLE VECTOR > RANDOM-STATE CCLOSURE CLOSURE > 140149/140149 0.3% 3 STRING BIGNUM RATIO COMPLEX > 3308/3308 87.1% 3 STRUCTURE > 1/1 65.2% STREAM > 48/48 99.3% CFUN CFDATA > 27264/27264 44.1% 2 SFUN SYMBOL READTABLE GFUN VFUN AFUN > > 7168/7168 contiguous (1 blocks) > 701127 hole > 260145/260145 21.3% 6 relocatable > > 429426 pages for cells > > 696739 total pages in core > 696739 current core maximum pages > 260145 pages reserved for gc > 2572715 pages available for adding to core > 35556 pages reserved for core exhaustion > > 3565155 maximum pages > > > Key: > > WS: words per struct > UP: allocated pages > MP: maximum pages > FI: fraction of cells in use on allocated pages > GC: number of gc triggers allocating this type > > word size: 64 bits > page size: 4096 bytes > heap start: 0xE81000 > heap max : 0x368365000 > shared library start: 0x0 > cstack start: 0x0 > cstack mark offset: 0 bytes > cstack direction: downward > cstack alignment: 32 bytes > cstack max: 16001 bytes > immfix start: 0x8000000000000000 > immfix size: 4611686018427387904 fixnums > physical memory: 1299534 pages -- Camm Maguire c...@maguirefamily.org ========================================================================== "The earth is but one country, and mankind its citizens." -- Baha'u'llah
