diff options
Diffstat (limited to 'module/zfs/dsl_pool.c')
| -rw-r--r-- | module/zfs/dsl_pool.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/module/zfs/dsl_pool.c b/module/zfs/dsl_pool.c index bd2055710..b940382d1 100644 --- a/module/zfs/dsl_pool.c +++ b/module/zfs/dsl_pool.c @@ -106,9 +106,11 @@ int zfs_dirty_data_max_percent = 10; int zfs_dirty_data_max_max_percent = 25; /* - * If there is at least this much dirty data, push out a txg. + * If there's at least this much dirty data (as a percentage of + * zfs_dirty_data_max), push out a txg. This should be less than + * zfs_vdev_async_write_active_min_dirty_percent. */ -unsigned long zfs_dirty_data_sync = 64 * 1024 * 1024; +int zfs_dirty_data_sync_percent = 20; /* * Once there is this amount of dirty data, the dmu_tx_delay() will kick in @@ -879,10 +881,12 @@ dsl_pool_need_dirty_delay(dsl_pool_t *dp) { uint64_t delay_min_bytes = zfs_dirty_data_max * zfs_delay_min_dirty_percent / 100; + uint64_t dirty_min_bytes = + zfs_dirty_data_max * zfs_dirty_data_sync_percent / 100; boolean_t rv; mutex_enter(&dp->dp_lock); - if (dp->dp_dirty_total > zfs_dirty_data_sync) + if (dp->dp_dirty_total > dirty_min_bytes) txg_kick(dp); rv = (dp->dp_dirty_total > delay_min_bytes); mutex_exit(&dp->dp_lock); @@ -1345,7 +1349,7 @@ module_param(zfs_dirty_data_max_max, ulong, 0444); MODULE_PARM_DESC(zfs_dirty_data_max_max, "zfs_dirty_data_max upper bound in bytes"); -module_param(zfs_dirty_data_sync, ulong, 0644); +module_param(zfs_dirty_data_sync_percent, int, 0644); MODULE_PARM_DESC(zfs_dirty_data_sync, "sync txg when this much dirty data"); module_param(zfs_delay_scale, ulong, 0644); |