[Gc] Re: Problems with GC_size_map

Juan Jose Garcia-Ripoll juanjose.garciaripoll at googlemail.com
Sat Feb 6 01:03:28 PST 2010


I had forgotten that GC_dump() was part of ECL's interface to the garbage
collector. The output is below. In addition to this I built a version of ECL
with statistics and stored the log here
    http://tream.dreamhosters.com/exchange/gc_log.txt

I am a bit worried that already at the beginning GC_dump() shows a set of
blacklisted roots.
> (si::gc-dump)
***Static roots:
Total size: 0

***Heap sections:
Total heap size: 4935680
Section 0 from 0x402000 to 0x442000 0/64 blacklisted
Section 1 from 0x600000 to 0x83a000 0/570 blacklisted
Section 2 from 0x83a000 to 0x93f000 0/261 blacklisted
Section 3 from 0x106000 to 0x10e000 0/8 blacklisted
Section 4 from 0x97f000 to 0xaad000 0/302 blacklisted

Why is it so? I a cleared the set of roots because ECL really (except for
the stack) knows where all roots live. Furthermore, this version of ECL is
using a bitmap denoting the location of pointers in objects.


TIA

Juanjo

***Static roots:
Total size: 0

***Heap sections:
Total heap size: 8904704
Section 0 from 0x402000 to 0x442000 0/64 blacklisted
Section 1 from 0x600000 to 0x83a000 0/570 blacklisted
Section 2 from 0x83a000 to 0x93f000 0/261 blacklisted
Section 3 from 0x106000 to 0x10e000 0/8 blacklisted
Section 4 from 0x97f000 to 0xaad000 0/302 blacklisted
Section 5 from 0x93f000 to 0x94f000 0/16 blacklisted
Section 6 from 0xaad000 to 0xc45000 0/408 blacklisted
Section 7 from 0xc85000 to 0xea6000 0/545 blacklisted

***Free blocks:
Free list 1 (Total size 126976):
0x88f000 size 4096 not black listed
0x892000 size 4096 not black listed
0x89b000 size 4096 not black listed
0x8cd000 size 4096 not black listed
0x915000 size 4096 not black listed
0x920000 size 4096 not black listed
0x980000 size 4096 not black listed
0x982000 size 4096 not black listed
0x984000 size 4096 not black listed
0x989000 size 4096 not black listed
0x98c000 size 4096 not black listed
0x98f000 size 4096 not black listed
0x991000 size 4096 not black listed
0x993000 size 4096 not black listed
0x997000 size 4096 not black listed
0x99b000 size 4096 not black listed
0x99e000 size 4096 not black listed
0x9b2000 size 4096 not black listed
0x9c1000 size 4096 not black listed
0xa1b000 size 4096 not black listed
0xa21000 size 4096 not black listed
0xa5e000 size 4096 not black listed
0xa62000 size 4096 not black listed
0xa92000 size 4096 not black listed
0xa94000 size 4096 not black listed
0xa96000 size 4096 not black listed
0xa98000 size 4096 not black listed
0xa9b000 size 4096 not black listed
0xaa0000 size 4096 not black listed
0xaa6000 size 4096 not black listed
0x426000 size 4096 not black listed
Free list 2 (Total size 57344):
0x8db000 size 8192 not black listed
0x917000 size 8192 not black listed
0x925000 size 8192 not black listed
0x940000 size 8192 not black listed
0x944000 size 8192 not black listed
0xa6f000 size 8192 not black listed
0x413000 size 8192 not black listed
Free list 4 (Total size 16384):
0x94b000 size 16384 not black listed
Free list 23 (Total size 94208):
0xa7a000 size 94208 not black listed
Free list 28 (Total size 114688):
0x9f8000 size 114688 not black listed
Free list 32 (Total size 131072):
0x9c8000 size 131072 not black listed
Free list 60 (Total size 3837952):
0xaad000 size 1671168 not black listed
0xc95000 size 2166784 not black listed
Total of 4378624 bytes on free list

***Blocks in use:
(kind(0=ptrfree,1=normal,2=unc.):size_in_bytes, #_marks_set)
(1:8,143)(0:40,102)(6:24,170)(1:8,187)(1:8,284)(1:8,75)(0:48,81)(0:512,6)(0:2245632,1)(0:24,92)(0:32,128)(1:40,90)(0:128,4)(6:16,64)(0:67584,1)(1:5184,1)(6:24,169)(6:24,170)(6:24,165)(1:2048,1)(6:24,170)(6:32,123)(1:152,9)(6:24,170)(6:24,170)(6:32,128)(6:24,170)(1:11664,1)(6:24,170)(6:24,170)(0:2528,1)(6:8,1)(6:24,170)(6:32,128)(6:24,170)(1:5184,1)(6:24,170)(6:40,68)(1:1360,1)(1:1360,3)(1:1360,1)(1:1360,3)(1:1360,3)(6:48,17)(0:16,46)(0:8,55)(6:32,128)(1:8,374)(6:24,170)(0:1360,3)(1:8,28)(1:8,23)(1:8,35)(1:8,69)(1:8,67)(1:8,61)(1:8,40)(1:8,36)(1:8,32)(1:8,36)(1:8,36)(1:8,33)(1:8,43)(1:8,40)(1:8,35)(1:8,38)(6:32,6)(0:32,77)(6:24,170)(1:32,128)(0:24,26)(0:40,102)(6:24,162)(6:32,128)(1:24,43)(6:64,23)(1:216,1)(0:32,128)(6:24,161)(6:32,128)(6:24,166)(1:248,1)(0:32,75)(0:48,85)(0:40,99)(6:24,150)(0:32,128)(1:672,1)(1:40,101)(6:24,165)(1:512,8)(0:48,81)(6:24,169)(1:112,1)(6:48,9)(1:32,124)(1:12288,1)(1:40,99)(6:32,28)(0:40,102)(1:8,65)(1:8,57)(1:8,97)(1:8,51)(1:8,47)(1:8,71)(1:8,94)(1:8,38)(1:8,111)(1:8,189)(0:56,73)(1:8,201)(6:24,169)(1:8,190)(1:8,196)(1:8,180)(1:8,33)(0:104,5)(1:8,117)(1:8,160)(6:24,159)(6:24,12)(1:8,191)(1:8,138)(1:40,97)(0:32,128)(1:8,63)(0:40,99)(6:24,153)(1:8,198)(1:8,324)(1:8,187)(1:8,160)(1:8,105)(1:8,74)(1:8,73)(1:8,57)(6:24,168)(1:8,56)(1:8,62)(1:8,67)(1:8,49)(1:8,61)(1:8,28)(1:8,40)(1:8,105)(1:8,43)(1:8,83)(1:8,60)(1:8,37)(6:24,170)(1:672,1)(6:48,2)(6:24,79)(0:40,101)(6:32,81)(0:24,25)(6:24,170)(0:32,122)(0:48,85)(6:24,146)(1:40,102)(0:40,102)(6:32,125)(0:16,18)(0:62528,1)(1:8,16)(0:40,80)(1:8,46)(1:8,109)(1:8,103)(1:8,34)(1:8,32)(1:8,49)(6:24,106)(1:8,41)(6:24,116)(1:8,39)(0:48,79)(1:40,92)(1:8,58)(1:8,55)(1:32,1)(1:8,49)(1:8,107)(1:8,51)(1:8,107)(1:8,117)(1:8,108)(1:8,125)(1:8,91)(0:48,9)(1:8,107)(1:8,137)(0:56,30)(1:8,167)(1:8,126)(6:24,69)(6:24,170)(1:8,144)(0:32,8)(0:24,6)(6:32,2)(1:8,120)(1:8,73)(1:8,82)(1:8,51)(1:8,67)(1:8,74)(1:8,82)(1:8,92)(1:8,79)(1:8,91)(1:8,85)(1:8,58)(1:8,80)(1:8,94)(1:8,77)(1:8,86)(1:8,71)(0:32,42)(1:8,50)(1:32,125)(1:8,47)(1:8,51)(0:24,4)(0:96,1)(0:24,8)(0:32,10)(6:24,7)(6:80,1)(6:24,169)(1:160,1)(0:136,1)(1:8,76)(1:8,93)(1:8,79)(1:8,81)(1:8,85)(1:8,35)(0:184,2)(1:32,125)(1:8,162)(6:24,164)(0:32,121)(1:11664,1)(1:168,1)(1:40,102)(1:8,199)(1:8,310)(1:8,59)(1:8,23)(1:8,35)(1:8,72)(1:8,50)(1:8,66)(1:11664,1)(1:256,16)(1:11664,1)(6:24,170)(1:8,219)(1:256,16)(6:24,168)(1:816,1)(1:8,88)(1:8,45)(1:40,102)(0:248,1)(0:88,4)(0:200,2)(0:672,2)(0:1360,1)(0:136,1)(0:224,2)(0:232,3)(0:240,2)(1:8,49)(1:256,15)(6:24,166)(1:8,86)(1:8,145)(1:8,54)(1:8,101)(1:8,330)(0:32,117)(1:8,335)(0:24,136)(6:24,167)(6:24,165)(0:32,126)(1:8,147)(1:1360,3)(1:816,2)(6:32,128)(1:1360,3)(1:8,324)(6:40,33)(1:64,21)(6:48,31)(0:16,7)(6:32,128)(6:24,167)(1:32,114)(1:8,141)(0:8,77)(6:24,168)(1:8,59)(1:8,61)(1:256,16)(1:8,194)(1:8,54)(1:8,56)(1:8,36)(1:8,65)(1:8,272)(1:120,3)(1:2304,1)(1:88,3)(1:40,95)(6:24,167)(1:8,138)(0:32,114)(0:40,102)(0:48,85)(1:8,227)(1:48,6)(1:32,128)(1:192,3)(6:24,169)(1:8,457)(1:8,101)(1:8,247)(1:512,2)(1:8,366)(0:32,128)(6:24,170)(1:144,2)(0:40,95)(0:64,24)(1:1360,3)(0:144,2)(0:512,8)(0:112,2)(0:336,9)(0:72,26)(0:80,24)(6:24,164)(1:56,66)(1:72,2)(1:16,188)(6:32,128)(6:32,128)(1:200,3)(1:136,3)(1:184,1)(1:96,3)(6:48,20)(1:8,174)(1:8,102)(6:24,170)(1:8,78)(1:8,76)(1:8,111)(1:8,123)(1:8,136)(1:8,142)(6:24,167)(1:8,103)(1:160,1)(1:40,102)(1:7776,1)(0:16,77)(1:8,76)(1:8,56)(1:8,91)(1:8,327)(1:8,86)(6:24,161)(1:8,116)(1:8,161)(1:8,125)(1:104,7)(1:512,4)(1:8192,1)(1:1360,2)(1:8192,1)(1:8,345)(6:48,32)(1:8,186)(1:8,271)(1:8,229)(1:8,344)(1:1360,3)(0:192,2)(1:8,365)(1:8,345)(1:8,197)(1:8,219)(6:24,170)(1:8,343)(1:8,257)(1:8,264)(1:8,246)(1:8,469)(1:8,511)(1:8,512)(1:8,508)(0:56,64)(1:160,1)(1:512,4)(1:8,493)(1:232,1)(6:24,161)(6:32,128)(1:336,9)(1:80,27)(1:128,5)(0:160,1)(0:48,84)(0:4200,1)(1:64,64)(1:240,1)(6:64,63)(0:40,102)(1:8192,1)(1:2048,1)(0:152,2)(1:24,157)(0:96,10)(6:80,8)(0:202752,1)(1:49152,1)(1:256,15)(0:62528,1)
blocks = 434, bytes = 4526080

***Finalization statistics:
90 finalization table entries; 0 disappearing links
0 objects are eligible for immediate finalization
#P"/Users/jjgarcia/src/ecl/test-bignum.fas"

-- 
Instituto de Física Fundamental, CSIC
c/ Serrano, 113b, Madrid 28006 (Spain)
http://juanjose.garciaripoll.googlepages.com
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