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| author | Theodore Ts'o <tytso@mit.edu> | 2013-02-07 07:30:23 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-02-07 07:30:23 +0400 |
| commit | 9fff24aa2c5c504aadead1ff9599e813604c2e53 (patch) | |
| tree | 24bbb1691ec816aed648a895882526ce361ec92f /fs/jbd2/transaction.c | |
| parent | 40ae3487628235e5f1eb27542cca0cdb6e5dbe16 (diff) | |
| download | linux-9fff24aa2c5c504aadead1ff9599e813604c2e53.tar.xz | |
jbd2: track request delay statistics
Track the delay between when we first request that the commit begin
and when it actually begins, so we can see how much of a gap exists.
In theory, this should just be the remaining scheduling quantuum of
the thread which requested the commit (assuming it was not a
synchronous operation which triggered the commit request) plus
scheduling overhead; however, it's possible that real time processes
might get in the way of letting the kjournald thread from executing.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/transaction.c')
| -rw-r--r-- | fs/jbd2/transaction.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index df9f29760efa..735609e2d636 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -100,6 +100,7 @@ jbd2_get_transaction(journal_t *journal, transaction_t *transaction) journal->j_running_transaction = transaction; transaction->t_max_wait = 0; transaction->t_start = jiffies; + transaction->t_requested = 0; return transaction; } |