mirrors/dragonfly
1
0
Fork 0
mirror of https://github.com/dragonflydb/dragonfly.git synced 2025-05-11 18:35:46 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 5

chore: add clear metric for the fragmentation waste (#1735)

Browse source
This commit is contained in:
Roman Gershman 2023-08-24 20:17:12 +03:00 • committed by GitHub
parent 731f36edd2
commit 5aa63a68dd
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

12
src/server/memory_cmd.cc
View file

@ -52,17 +52,19 @@ std::string MallocStats(bool backing, unsigned tid) {
mi_heap_visit_blocks(data_heap, false /* visit all blocks*/, MiArenaVisit, &block_map);
uint64_t reserved = 0, committed = 0, used = 0;
for (const auto& k_v : block_map) {
absl::StrAppend(&str, k_v.second, " ", get<0>(k_v.first), " ", get<1>(k_v.first), " ",
uint64_t count = k_v.second;
absl::StrAppend(&str, count, " ", get<0>(k_v.first), " ", get<1>(k_v.first), " ",
get<2>(k_v.first), " ", get<3>(k_v.first), "\n");
reserved += k_v.second * get<1>(k_v.first);
committed += k_v.second * get<2>(k_v.first);
used += k_v.second * get<3>(k_v.first);
reserved += count * get<1>(k_v.first);
committed += count * get<2>(k_v.first);
used += count * get<3>(k_v.first);
}
uint64_t delta = (absl::GetCurrentTimeNanos() - start) / 1000;
absl::StrAppend(&str, "--- End mimalloc statistics, took ", delta, "us ---\n");
absl::StrAppend(&str, "total reserved: ", reserved, ", comitted: ", committed, ", used: ", used,
"\n");
"fragmentation waste: ", (100.0 * (committed - used)) / std::max(1UL, committed),
"%\n");
return str;
}