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context: keep the resolve cache smaller

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We don't need to cache 65536 extent maps, especially if each one
can have almost 700K references.

Valgrind's massif tool points to the extent map cache as a very
large memory allocator, but test runs with memcg disagree.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell 2021-12-05 19:24:22 -05:00
parent d5d17cbe62
commit d6d3e1045e
3 changed files with 15 additions and 4 deletions
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17
src/bees-context.cc
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@ -43,12 +43,13 @@ BeesFdCache::BeesFdCache(shared_ptr<BeesContext> ctx) :
void
BeesFdCache::clear()
{
BEESNOTE("Clearing root FD cache to enable subvol delete");
BEESLOGDEBUG("Clearing root FD cache to enable subvol delete");
BEESLOGDEBUG("Clearing root FD cache with size " << m_root_cache.size() << " to enable subvol delete");
BEESNOTE("Clearing root FD cache with size " << m_root_cache.size());
m_root_cache.clear();
BEESCOUNT(root_clear);
BEESLOGDEBUG("Clearing open FD cache to enable file delete");
BEESNOTE("Clearing open FD cache to enable file delete");
BEESLOGDEBUG("Clearing open FD cache with size " << m_file_cache.size() << " to enable file delete");
BEESNOTE("Clearing open FD cache with size " << m_file_cache.size());
m_file_cache.clear();
BEESCOUNT(open_clear);
}
@ -854,6 +855,14 @@ BeesContext::invalidate_addr(BeesAddress addr)
return m_resolve_cache.expire(addr.get_physical_or_zero());
}
void
BeesContext::resolve_cache_clear()
{
BEESNOTE("clearing resolve cache with size " << m_resolve_cache.size());
BEESLOGDEBUG("Clearing resolve cache with size " << m_resolve_cache.size());
return m_resolve_cache.clear();
}
void
BeesContext::set_root_fd(Fd fd)
{

1
src/bees-roots.cc
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@ -722,6 +722,7 @@ void
BeesRoots::clear_caches()
{
m_ctx->fd_cache()->clear();
m_ctx->resolve_cache_clear();
}
void

1
src/bees.h
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@ -766,6 +766,7 @@ public:
BeesResolveAddrResult resolve_addr(BeesAddress addr);
void invalidate_addr(BeesAddress addr);
void resolve_cache_clear();
void dump_status();
void show_progress();