diff options
| -rw-r--r-- | src/file_handle_cache.erl | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/src/file_handle_cache.erl b/src/file_handle_cache.erl index e8d7cf6e85..aa01a508ec 100644 --- a/src/file_handle_cache.erl +++ b/src/file_handle_cache.erl @@ -88,19 +88,20 @@ %% message and pass it into set_maximum_since_use/1. However, it's %% highly possible this age will be greater than the ages of all the %% handles the client knows of because the client has used its file -%% handles in the mean time. Thus at this point it reports to the -%% server the current timestamp at which its least recently used file -%% handle was last used. The server will check two seconds later that -%% either it's back under the limit, in which case all is well again, -%% or if not, it will calculate a new average age. Its data will be -%% much more recent now, and so it's very likely that when this is -%% communicated to the clients, the clients will close file handles. +%% handles in the mean time. Thus at this point the client reports to +%% the server the current timestamp at which its least recently used +%% file handle was last used. The server will check two seconds later +%% that either it's back under the limit, in which case all is well +%% again, or if not, it will calculate a new average age. Its data +%% will be much more recent now, and so it's very likely that when +%% this is communicated to the clients, the clients will close file +%% handles. %% %% The advantage of this scheme is that there is only communication %% from the client to the server on open, close, and when in the %% process of trying to reduce file handle usage. There is no %% communication from the client to the server on normal file handle -%% operations. This scheme forms a feed back loop - the server doesn't +%% operations. This scheme forms a feed-back loop - the server doesn't %% care which file handles are closed, just that some are, and it %% checks this repeatedly when over the limit. Given the guarantees of %% now(), even if there is just one file handle open, a limit of 1, |