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Revert "Add new kstat for monitoring time in dmu_tx_assign" 

This reverts commit 92334b14ec.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2013-09-30 11:45:58 -07:00
parent 11cb9d773f
commit 98ab38d109
3 changed files with 0 additions and 72 deletions
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5
include/sys/dsl_pool.h
View File

@ -90,7 +90,6 @@ typedef struct dsl_pool {
uint64_t dp_root_dir_obj;
struct taskq *dp_iput_taskq;
kstat_t *dp_txg_kstat;
kstat_t *dp_tx_assign_kstat;
/* No lock needed - sync context only */
blkptr_t dp_meta_rootbp;
@ -113,8 +112,6 @@ typedef struct dsl_pool {
uint64_t dp_mos_uncompressed_delta;
uint64_t dp_txg_history_size;
list_t dp_txg_history;
uint64_t dp_tx_assign_size;
kstat_named_t *dp_tx_assign_buckets;
/* Has its own locking */
@ -171,8 +168,6 @@ int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
int dsl_pool_hold(const char *name, void *tag, dsl_pool_t **dp);
void dsl_pool_rele(dsl_pool_t *dp, void *tag);
void dsl_pool_tx_assign_add_usecs(dsl_pool_t *dp, uint64_t usecs);
txg_history_t *dsl_pool_txg_history_add(dsl_pool_t *dp, uint64_t txg);
txg_history_t *dsl_pool_txg_history_get(dsl_pool_t *dp, uint64_t txg);
void dsl_pool_txg_history_put(txg_history_t *th);

8
module/zfs/dmu_tx.c
View File

@ -1077,15 +1077,12 @@ dmu_tx_unassign(dmu_tx_t *tx)
int
dmu_tx_assign(dmu_tx_t *tx, txg_how_t txg_how)
{
hrtime_t before, after;
int err;
ASSERT(tx->tx_txg == 0);
ASSERT(txg_how == TXG_WAIT || txg_how == TXG_NOWAIT);
ASSERT(!dsl_pool_sync_context(tx->tx_pool));
before = gethrtime();
/* If we might wait, we must not hold the config lock. */
ASSERT(txg_how != TXG_WAIT || !dsl_pool_config_held(tx->tx_pool));
@ -1100,11 +1097,6 @@ dmu_tx_assign(dmu_tx_t *tx, txg_how_t txg_how)
txg_rele_to_quiesce(&tx->tx_txgh);
after = gethrtime();
dsl_pool_tx_assign_add_usecs(tx->tx_pool,
(after - before) / NSEC_PER_USEC);
return (0);
}

59
module/zfs/dsl_pool.c
View File

@ -59,63 +59,6 @@ kmutex_t zfs_write_limit_lock;
static pgcnt_t old_physmem = 0;
static void
dsl_pool_tx_assign_init(dsl_pool_t *dp, unsigned int ndata)
{
kstat_named_t *ks;
char name[KSTAT_STRLEN];
int i, data_size = ndata * sizeof(kstat_named_t);
(void) snprintf(name, KSTAT_STRLEN, "dmu_tx_assign-%s",
spa_name(dp->dp_spa));
dp->dp_tx_assign_size = ndata;
if (data_size)
dp->dp_tx_assign_buckets = kmem_alloc(data_size, KM_SLEEP);
else
dp->dp_tx_assign_buckets = NULL;
for (i = 0; i < dp->dp_tx_assign_size; i++) {
ks = &dp->dp_tx_assign_buckets[i];
ks->data_type = KSTAT_DATA_UINT64;
ks->value.ui64 = 0;
(void) snprintf(ks->name, KSTAT_STRLEN, "%u us", 1 << i);
}
dp->dp_tx_assign_kstat = kstat_create("zfs", 0, name, "misc",
KSTAT_TYPE_NAMED, 0, KSTAT_FLAG_VIRTUAL);
if (dp->dp_tx_assign_kstat) {
dp->dp_tx_assign_kstat->ks_data = dp->dp_tx_assign_buckets;
dp->dp_tx_assign_kstat->ks_ndata = dp->dp_tx_assign_size;
dp->dp_tx_assign_kstat->ks_data_size = data_size;
kstat_install(dp->dp_tx_assign_kstat);
}
}
static void
dsl_pool_tx_assign_destroy(dsl_pool_t *dp)
{
if (dp->dp_tx_assign_buckets)
kmem_free(dp->dp_tx_assign_buckets,
dp->dp_tx_assign_size * sizeof(kstat_named_t));
if (dp->dp_tx_assign_kstat)
kstat_delete(dp->dp_tx_assign_kstat);
}
void
dsl_pool_tx_assign_add_usecs(dsl_pool_t *dp, uint64_t usecs)
{
uint64_t idx = 0;
while (((1 << idx) < usecs) && (idx < dp->dp_tx_assign_size - 1))
idx++;
atomic_inc_64(&dp->dp_tx_assign_buckets[idx].value.ui64);
}
static int
dsl_pool_txg_history_update(kstat_t *ksp, int rw)
{
@ -296,7 +239,6 @@ dsl_pool_open_impl(spa_t *spa, uint64_t txg)
1, 4, 0);
dsl_pool_txg_history_init(dp, txg);
dsl_pool_tx_assign_init(dp, 32);
return (dp);
}
@ -438,7 +380,6 @@ dsl_pool_close(dsl_pool_t *dp)
arc_flush(dp->dp_spa);
txg_fini(dp);
dsl_scan_fini(dp);
dsl_pool_tx_assign_destroy(dp);
dsl_pool_txg_history_destroy(dp);
rrw_destroy(&dp->dp_config_rwlock);
mutex_destroy(&dp->dp_lock);