Follow-up to "Formatting the date is expensive. The process of actually
formatting a value is reasonable". Is this still an issue from LOG4J2-930:
%m %ex%n: 1,755,573 msg/sec%d %m %ex%n: 1,194,184 msg/sec
If so, isn't date rendering essentially a sequence we can generate ahead of
time similar to
Thanks, Remko. The default '%d' uses FixedDateFormat with FixedFormat.DEFAULT.
The FastDateFormat alternative does not support microseconds, so it doesn't
suffer from the same problem. I think I can substantially reduce the frequency
we re-format dates by checking FixedFormat.secondFractionDigit
I remember looking at PatternLayout performance, I reported my findings here,
hopefully they’re still useful: https://issues.apache.org/jira/browse/LOG4J2-930
If %d is used in the pattern, does the FixedDateFormat get used?
> On Aug 28, 2021, at 4:33, Ralph Goers wrote:
>
> All of that agr
All of that agrees with my observations as well.
Ralph
> On Aug 27, 2021, at 12:23 PM, Carter Kozak wrote:
>
> I've identified a few things that seem impactful, but bear in mind that I
> haven't begun to drill down into them yet. I plan to file individual tickets
> and investigate in greater
I've identified a few things that seem impactful, but bear in mind that I
haven't begun to drill down into them yet. I plan to file individual tickets
and investigate in greater depth later on:
1. Formatting the date is expensive. The process of actually formatting a value
is reasonable, howeve
My pleasure, I enjoy digging into this sort of performance comparison, the
toughest piece right now is balancing investigation with active projects at
work. I completely agree about the importance of getting this resolved
quickly and I intend to continue investigating.
Re loom:
Currently we have a
Carter, thanks so much for your great effort and attention on this issue. *I
personally find this the uttermost important thing the project needs to
address with urgency right now.* Ceki is warming up for a new Logback (and
SLF4J?) release. I am pretty sure he will do his part in PR, particularly
i
