On 4/11/24 14:12, Nick Holland wrote:
On 4/11/24 05:47, Federico Giannici wrote:
We have a server with A LOT of files in some directories (an email
server in maildir format).
Since we upgraded from OpenBSD amd64 7.3 to 7.5 (passing through 7.4) it
became very very very slow to access these large directories!
,,,
You may be being bitten by the removal of softdeps (soft updates)
in 7.4 more than the availability of a knob to twist. This was a
huge hit for some things -- I had one backup job go from a couple
hours to eight or so hours. However, it turned out that increase
in time has not inconvenienced me at all, and some random lockups
related to softdeps have gone away. Overall, win for me (the
fscks after a lockup took hours, too, not to mention all the time
and effort spent replacing part after part assuming it was a HW
issue).
As I understand it...there were known (known unknown?) bugs in the
softdep code, the code was ugly, and it made it difficult to
actually improve the code.
No, we knew that softdeps were being deprecated and we removed from
everywhere some time ago. It must be something else.
Anyway, it's strange that dirhash parameters has being changed and
removed without any mention...
