Hi,
some information is missing...
How large is your ARC / your main memory?
Probably too small to hold all metadata (1/1000 of the data amount).
=> metadata has to be read again and again
A recordsize smaller than 128k increases the problem.
Its a data volume, perhaps raidz or raidz2 and
Hi,
if you are regarding only changes to a file as transactions,
then flock() and fsync() is sufficient to reach ACID level with ZFS.
To achieve transactions which change multiple files,
you need flock(), fsync() and use snapshots for transaction commit or
rollback for transaction abort.
But the
