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#include "stdinc.h"
#include "dat.h"
#include "fns.h"
int count[VtMaxLumpSize][VtMaxType];
Config conf;
enum
{
ClumpChunks = 32*1024
};
static int
readarenainfo(Arena *arena)
{
ClumpInfo *ci, *cis;
u32int clump;
int i, n, ok;
if(arena->memstats.clumps)
fprint(2, "reading directory for arena=%s with %d entries\n", arena->name, arena->memstats.clumps);
cis = MKN(ClumpInfo, ClumpChunks);
ok = 0;
for(clump = 0; clump < arena->memstats.clumps; clump += n){
n = ClumpChunks;
if(n > arena->memstats.clumps - clump)
n = arena->memstats.clumps - clump;
if((i=readclumpinfos(arena, clump, cis, n)) != n){
seterr(EOk, "arena directory read failed %d not %d: %r", i, n);
ok = -1;
break;
}
for(i = 0; i < n; i++){
ci = &cis[i];
if(ci->type >= VtMaxType || ci->uncsize >= VtMaxLumpSize) {
fprint(2, "bad clump: %d: type = %d: size = %d\n", clump+i, ci->type, ci->uncsize);
continue;
}
count[ci->uncsize][ci->type]++;
}
}
free(cis);
if(ok < 0)
return TWID32;
return clump;
}
static void
clumpstats(Index *ix)
{
int ok;
ulong clumps, n;
int i, j, t;
ok = 0;
clumps = 0;
for(i = 0; i < ix->narenas; i++){
n = readarenainfo(ix->arenas[i]);
if(n == TWID32){
ok = -1;
break;
}
clumps += n;
}
if(ok < 0)
return;
print("clumps = %ld\n", clumps);
for(i=0; i<VtMaxLumpSize; i++) {
t = 0;
for(j=0; j<VtMaxType; j++)
t += count[i][j];
if(t == 0)
continue;
print("%d\t%d", i, t);
for(j=0; j<VtMaxType; j++)
print("\t%d", count[i][j]);
print("\n");
}
}
void
usage(void)
{
fprint(2, "usage: clumpstats [-B blockcachesize] config\n");
threadexitsall(0);
}
void
threadmain(int argc, char *argv[])
{
u32int bcmem;
bcmem = 0;
ARGBEGIN{
case 'B':
bcmem = unittoull(ARGF());
break;
default:
usage();
break;
}ARGEND
readonly = 1;
if(argc != 1)
usage();
if(initventi(argv[0], &conf) < 0)
sysfatal("can't init venti: %r");
if(bcmem < maxblocksize * (mainindex->narenas + mainindex->nsects * 4 + 16))
bcmem = maxblocksize * (mainindex->narenas + mainindex->nsects * 4 + 16);
if(0) fprint(2, "initialize %d bytes of disk block cache\n", bcmem);
initdcache(bcmem);
clumpstats(mainindex);
threadexitsall(0);
}
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