libdb/SOURCES/libdb-5.3.21-trickle_cpu.patch

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2020-07-14 01:30:02 +00:00
diff -up db-5.3.21/src/dbinc_auto/int_def.in.trickle db-5.3.21/src/dbinc_auto/int_def.in
--- db-5.3.21/src/dbinc_auto/int_def.in.trickle 2018-08-21 10:54:06.066757392 +0200
+++ db-5.3.21/src/dbinc_auto/int_def.in 2018-08-21 10:54:06.111756561 +0200
@@ -1458,6 +1458,7 @@
#define __memp_sync_int __memp_sync_int@DB_VERSION_UNIQUE_NAME@
#define __memp_mf_sync __memp_mf_sync@DB_VERSION_UNIQUE_NAME@
#define __memp_purge_dead_files __memp_purge_dead_files@DB_VERSION_UNIQUE_NAME@
+#define __memp_purge_dead_and_count __memp_purge_dead_and_count@DB_VERSION_UNIQUE_NAME@
#define __memp_trickle_pp __memp_trickle_pp@DB_VERSION_UNIQUE_NAME@
#define __mutex_alloc __mutex_alloc@DB_VERSION_UNIQUE_NAME@
#define __mutex_alloc_int __mutex_alloc_int@DB_VERSION_UNIQUE_NAME@
diff -up db-5.3.21/src/dbinc_auto/mp_ext.h.trickle db-5.3.21/src/dbinc_auto/mp_ext.h
--- db-5.3.21/src/dbinc_auto/mp_ext.h.trickle 2018-08-21 10:54:06.103756709 +0200
+++ db-5.3.21/src/dbinc_auto/mp_ext.h 2018-08-21 10:54:06.112756543 +0200
@@ -101,6 +101,7 @@ int __mp_xxx_fh __P((DB_MPOOLFILE *, DB_
int __memp_sync_int __P((ENV *, DB_MPOOLFILE *, u_int32_t, u_int32_t, u_int32_t *, int *));
int __memp_mf_sync __P((DB_MPOOL *, MPOOLFILE *, int));
int __memp_purge_dead_files __P((ENV *));
+int __memp_purge_dead_and_count __P((ENV *, u_int32_t *, u_int32_t *));
int __memp_trickle_pp __P((DB_ENV *, int, int *));
#if defined(__cplusplus)
diff -up db-5.3.21/src/mp/mp_sync.c.trickle db-5.3.21/src/mp/mp_sync.c
--- db-5.3.21/src/mp/mp_sync.c.trickle 2018-08-21 10:54:06.105756672 +0200
+++ db-5.3.21/src/mp/mp_sync.c 2018-09-04 09:43:57.502992291 +0200
@@ -965,17 +965,34 @@ __bhcmp(p1, p2)
return (0);
}
+
/*
* __memp_purge_dead_files --
+ * Thin wrapper over __memp_purge_dead_and_count. Does not return any
+ * information about the number of total/dirty buffers.
+ *
+ * PUBLIC: int __memp_purge_dead_files __P((ENV *));
+ */
+int
+__memp_purge_dead_files(env)
+ ENV *env;
+{
+ return __memp_purge_dead_and_count(env, NULL, NULL);
+}
+
+/*
+ * __memp_purge_dead_and_count --
* Remove all dead files and their buffers from the mpool. The caller
* cannot hold any lock on the dead MPOOLFILE handles, their buffers
* or their hash buckets.
*
- * PUBLIC: int __memp_purge_dead_files __P((ENV *));
+ * PUBLIC: int __memp_purge_dead_and_count __P((ENV *, u_int32_t *, u_int32_t *));
*/
int
-__memp_purge_dead_files(env)
+__memp_purge_dead_and_count(env, totalp, dirtyp)
ENV *env;
+ u_int32_t *totalp;
+ u_int32_t *dirtyp;
{
BH *bhp;
DB_MPOOL *dbmp;
@@ -983,7 +1000,7 @@ __memp_purge_dead_files(env)
REGINFO *infop;
MPOOL *c_mp, *mp;
MPOOLFILE *mfp;
- u_int32_t i_cache;
+ u_int32_t i_cache, dirty, total;
int ret, t_ret, h_lock;
if (!MPOOL_ON(env))
@@ -992,6 +1009,7 @@ __memp_purge_dead_files(env)
dbmp = env->mp_handle;
mp = dbmp->reginfo[0].primary;
ret = t_ret = h_lock = 0;
+ dirty = total = 0;
/*
* Walk each cache's list of buffers and free all buffers whose
@@ -1000,6 +1018,7 @@ __memp_purge_dead_files(env)
for (i_cache = 0; i_cache < mp->nreg; i_cache++) {
infop = &dbmp->reginfo[i_cache];
c_mp = infop->primary;
+ total += c_mp->pages;
hp = R_ADDR(infop, c_mp->htab);
hp_end = &hp[c_mp->htab_buckets];
@@ -1008,6 +1027,9 @@ __memp_purge_dead_files(env)
if (SH_TAILQ_FIRST(&hp->hash_bucket, __bh) == NULL)
continue;
+ /* Count dirty pages first as we do not wait on mutex locks */
+ dirty += (u_int32_t)atomic_read(&hp->hash_page_dirty);
+
/*
* Search for a dead buffer. Other places that call
* __memp_bhfree() acquire the buffer lock before the
@@ -1073,6 +1095,11 @@ __memp_purge_dead_files(env)
}
}
+ if (dirtyp != NULL)
+ *dirtyp = dirty;
+ if (totalp != NULL)
+ *totalp = total;
+
return (ret);
}
diff -up db-5.3.21/src/mp/mp_trickle.c.trickle db-5.3.21/src/mp/mp_trickle.c
--- db-5.3.21/src/mp/mp_trickle.c.trickle 2018-08-21 10:54:06.105756672 +0200
+++ db-5.3.21/src/mp/mp_trickle.c 2018-08-21 10:54:06.112756543 +0200
@@ -56,6 +56,7 @@ __memp_trickle(env, pct, nwrotep)
dbmp = env->mp_handle;
mp = dbmp->reginfo[0].primary;
+ dirty = total = 0;
if (nwrotep != NULL)
*nwrotep = 0;
@@ -67,12 +68,8 @@ __memp_trickle(env, pct, nwrotep)
return (EINVAL);
}
- /* First we purge all dead files and their buffers. */
- if ((ret = __memp_purge_dead_files(env)) != 0)
- return (ret);
-
- /*
- * Loop through the caches counting total/dirty buffers.
+ /* First we purge all dead files and their buffers and
+ * loop through the caches counting total/dirty buffers.
*
* XXX
* Using hash_page_dirty is our only choice at the moment, but it's not
@@ -80,12 +77,8 @@ __memp_trickle(env, pct, nwrotep)
* than one page size, as a free 512B buffer may not be equivalent to
* having a free 8KB buffer.
*/
- for (ret = 0, i = dirty = total = 0; i < mp->nreg; ++i) {
- c_mp = dbmp->reginfo[i].primary;
- total += c_mp->pages;
- __memp_stat_hash(&dbmp->reginfo[i], c_mp, &dtmp);
- dirty += dtmp;
- }
+ if ((ret = __memp_purge_dead_and_count(env, &total, &dirty)) != 0)
+ return (ret);
/*
* If there are sufficient clean buffers, no buffers or no dirty