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Code Issues Releases Wiki Activity

ircd::db: Add a global cache arena w/ lifetime of subsystem.

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This commit is contained in:
Jason Volk 2020-05-29 18:05:16 -07:00
parent 085b1acfe9
commit 67ddcf074a
2 changed files with 23 additions and 4 deletions
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26
ircd/db.cc
View file

@ -105,6 +105,11 @@ ircd::db::request
decltype(ircd::db::write_mutex)
ircd::db::write_mutex;
/// Handle to a jemalloc arena when non-zero. Used as the base arena for all
/// cache allocators.
decltype(ircd::db::cache_arena)
ircd::db::cache_arena;
///////////////////////////////////////////////////////////////////////////////
//
// init
@ -113,6 +118,10 @@ ircd::db::write_mutex;
ircd::db::init::init()
try
{
#ifdef IRCD_ALLOCATOR_USE_JEMALLOC
cache_arena = ircd::allocator::get<unsigned>("arenas.create");
#endif
compressions();
directory();
test_direct_io();
@ -161,6 +170,15 @@ noexcept
{
log, "All contexts joined; all requests are clear."
};
if(likely(cache_arena != 0))
{
char keybuf[64];
ircd::allocator::get<void>(string_view(fmt::sprintf
{
keybuf, "arena.%u.destroy", cache_arena
}));
}
}
void
@ -1161,7 +1179,7 @@ try
,allocator
{
#ifdef IRCD_DB_HAS_ALLOCATOR
std::make_shared<struct allocator>(this)
std::make_shared<struct allocator>(this, nullptr, cache_arena)
#endif
}
,ssts{rocksdb::NewSstFileManager
@ -1910,7 +1928,7 @@ ircd::db::database::column::column(database &d,
,allocator
{
#ifdef IRCD_DB_HAS_ALLOCATOR
std::make_shared<struct database::allocator>(this->d, this)
std::make_shared<struct database::allocator>(this->d, this, cache_arena)
#endif
}
,handle
@ -3521,8 +3539,8 @@ ircd::db::database::allocator::allocator(database *const &d,
{
0
#ifdef IRCD_ALLOCATOR_USE_JEMALLOC
| MALLOCX_ARENA(arena)
| MALLOCX_ALIGN(alignment)
| MALLOCX_ARENA(this->arena)
| MALLOCX_ALIGN(this->alignment)
| MALLOCX_TCACHE_NONE
#endif
}

1
ircd/db.h
View file

@ -67,6 +67,7 @@ namespace ircd::db
extern ctx::pool::opts request_pool_opts;
extern ctx::pool request;
extern ctx::mutex write_mutex;
extern unsigned cache_arena;
// reflections
string_view reflect(const rocksdb::Status::Code &);