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Clamp largest 32bit usable chunk to 2/3 of 1GB.

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Con Kolivas 2011-04-12 14:40:51 +10:00
parent f81f8c68c7
commit c1055d173e
1 changed files with 5 additions and 2 deletions
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7
main.c
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@ -776,10 +776,13 @@ int main(int argc, char *argv[])
/* Decrease usable ram size on 32 bits due to kernel /
* userspace split. Cannot allocate larger than a 1
* gigabyte chunk due to 32 bit signed long being
* used in alloc */
* used in alloc, and at most 3GB can be malloced, and
* 2/3 of that makes for a total of 2GB to be split
* into thirds.
*/
control.usable_ram = MAX(control.ramsize - 900000000ll, 900000000ll);
control.maxram = MIN(control.maxram, control.usable_ram);
control.maxram = MIN(control.maxram, one_g);
control.maxram = MIN(control.maxram, one_g * 2 / 3);
} else
control.usable_ram = control.maxram;
round_to_page(&control.maxram);