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bcachefs: Convert bch2_compression_stats_to_text() to new accounting

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We no longer have to walk the whole btree to calculate compression
stats.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-02-24 21:09:51 -05:00
parent bfcaa9079d
commit 91f44781d5
1 changed files with 19 additions and 67 deletions
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86
fs/bcachefs/sysfs.c
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@ -22,6 +22,7 @@
#include "buckets.h"
#include "clock.h"
#include "compress.h"
#include "disk_accounting.h"
#include "disk_groups.h"
#include "ec.h"
#include "inode.h"
@ -255,91 +256,42 @@ static size_t bch2_btree_cache_size(struct bch_fs *c)
static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c)
{
struct btree_trans *trans;
enum btree_id id;
struct compression_type_stats {
u64 nr_extents;
u64 sectors_compressed;
u64 sectors_uncompressed;
} s[BCH_COMPRESSION_TYPE_NR];
u64 compressed_incompressible = 0;
int ret = 0;
memset(s, 0, sizeof(s));
if (!test_bit(BCH_FS_started, &c->flags))
return -EPERM;
trans = bch2_trans_get(c);
for (id = 0; id < BTREE_ID_NR; id++) {
if (!btree_type_has_ptrs(id))
continue;
ret = for_each_btree_key(trans, iter, id, POS_MIN,
BTREE_ITER_all_snapshots, k, ({
struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
struct bch_extent_crc_unpacked crc;
const union bch_extent_entry *entry;
bool compressed = false, incompressible = false;
bkey_for_each_crc(k.k, ptrs, crc, entry) {
incompressible |= crc.compression_type == BCH_COMPRESSION_TYPE_incompressible;
compressed |= crc_is_compressed(crc);
if (crc_is_compressed(crc)) {
s[crc.compression_type].nr_extents++;
s[crc.compression_type].sectors_compressed += crc.compressed_size;
s[crc.compression_type].sectors_uncompressed += crc.uncompressed_size;
}
}
compressed_incompressible += compressed && incompressible;
if (!compressed) {
unsigned t = incompressible ? BCH_COMPRESSION_TYPE_incompressible : 0;
s[t].nr_extents++;
s[t].sectors_compressed += k.k->size;
s[t].sectors_uncompressed += k.k->size;
}
0;
}));
}
bch2_trans_put(trans);
if (ret)
return ret;
prt_str(out, "type");
printbuf_tabstop_push(out, 12);
printbuf_tabstop_push(out, 16);
printbuf_tabstop_push(out, 16);
printbuf_tabstop_push(out, 24);
prt_printf(out, "type\tcompressed\runcompressed\raverage extent size\r\n");
for (unsigned i = 0; i < ARRAY_SIZE(s); i++) {
for (unsigned i = 1; i < BCH_COMPRESSION_TYPE_NR; i++) {
struct disk_accounting_pos a = {
.type = BCH_DISK_ACCOUNTING_compression,
.compression.type = i,
};
struct bpos p = disk_accounting_pos_to_bpos(&a);
u64 v[3];
bch2_accounting_mem_read(c, p, v, ARRAY_SIZE(v));
u64 nr_extents = v[0];
u64 sectors_uncompressed = v[1];
u64 sectors_compressed = v[2];
bch2_prt_compression_type(out, i);
prt_tab(out);
prt_human_readable_u64(out, s[i].sectors_compressed << 9);
prt_human_readable_u64(out, sectors_compressed << 9);
prt_tab_rjust(out);
prt_human_readable_u64(out, s[i].sectors_uncompressed << 9);
prt_human_readable_u64(out, sectors_uncompressed << 9);
prt_tab_rjust(out);
prt_human_readable_u64(out, s[i].nr_extents
? div_u64(s[i].sectors_uncompressed << 9, s[i].nr_extents)
prt_human_readable_u64(out, nr_extents
? div_u64(sectors_uncompressed << 9, nr_extents)
: 0);
prt_tab_rjust(out);
prt_newline(out);
}
if (compressed_incompressible) {
prt_printf(out, "%llu compressed & incompressible extents", compressed_incompressible);
prt_newline(out);
}
return 0;
}