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137 lines
2.5 KiB
137 lines
2.5 KiB
#include <litc.h>
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static long
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_fetch(long n)
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{
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long ret;
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if ((ret = sys_info(n)) == -1)
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errx(-1, "sysinfo");
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return ret;
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}
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__attribute__((unused))
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static long
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gccount(void)
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{
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return _fetch(SINFO_GCCOUNT);
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}
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__attribute__((unused))
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static long
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gctotns(void)
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{
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return _fetch(SINFO_GCPAUSENS);
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}
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__attribute__((unused))
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static long
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gcheapuse(void)
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{
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return _fetch(SINFO_GCHEAPSZ);
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}
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__attribute__((noreturn))
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void usage(const char *msg)
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{
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if (msg != NULL)
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printf("%s\n\n", msg);
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printf("usage:\n");
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printf("%s [-mvSg] [-h <int>] [-s <int>] [-w <int>] [-n <int>] "
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"[-l <int>]\n", __progname);
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printf("where:\n");
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printf("-d bloat kernel heap with vnodes\n");
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printf("-g force kernel GC\n");
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printf("-h <int> set kernel heap minimum to int MB\n");
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printf("-H <int> set kernel heap growth factor as int\n");
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printf("-l <int> set kernel heap reservation max to int MB\n");
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printf("-s <int>/<int> set GC mutator assist ratio to <int>/<int>\n\n");
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exit(-1);
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}
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int main(int argc, char **argv)
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{
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long kheap = 0, growperc = 0, hmax = 0;
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int newthing = 0, dogc = 0;
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long anum = 0, adenom = 0;
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int c;
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while ((c = getopt(argc, argv, "gdH:h:s:l:")) != -1) {
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switch (c) {
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case 'd':
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newthing = 1;
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break;
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case 'g':
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dogc = 1;
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break;
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case 'h':
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kheap = strtol(optarg, NULL, 0);
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break;
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case 'H':
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growperc = strtol(optarg, NULL, 0);
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break;
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case 's':
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{
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char *end;
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anum = strtol(optarg, &end, 0);
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if (*end != '/')
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usage("invalid ratio");
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end++;
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adenom = strtol(end, NULL, 0);
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if (anum <= 0 || adenom <= 0)
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usage("invalid ratio");
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break;
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}
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case 'l':
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hmax = strtol(optarg, NULL, 0);
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if (hmax == 0)
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errx(-1, "must be non-zero");
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break;
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default:
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usage(NULL);
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break;
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}
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}
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if (optind != argc)
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usage(NULL);
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if (newthing) {
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printf("bloat kernel heap...\n");
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const long hack4 = 1 << 7;
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if (sys_prof(hack4, 0, 0, 0) == -1)
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err(-1, "hack4");
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pause();
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}
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if (kheap) {
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const long hack = 1ul << 4;
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if (sys_prof(hack, kheap, 0, 0) == -1)
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err(-1, "sys prof");
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}
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if (growperc) {
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const long hack2 = 1ul << 5;
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if (sys_prof(hack2, growperc, 0, 0) == -1)
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err(-1, "sys prof");
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}
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if (hmax) {
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hmax <<= 20;
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const long prof_hack5 = 1ul << 8;
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if (sys_prof(prof_hack5, hmax, 0, 0) == -1)
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err(-1, "sys prof");
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}
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if (adenom != 0) {
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const long prof_hack6 = 1ul << 9;
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if (sys_prof(prof_hack6, anum, adenom, 0) == -1)
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err(-1, "sys prof");
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}
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if (dogc) {
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_fetch(10);
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printf("kernel heap use: %ld Mb\n", gcheapuse()/(1 << 20));
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}
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return 0;
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}
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