Biased locking Obsoletion

[Andrew Haley]

On 11/6/20 5:29 PM, Doerr, Martin wrote:
> My impression is that modern workloads are fine without BL, so typical JDK15 users will probably not notice it was switched off.

I don't believe they are, because there are several (many?) places in
the Java library that perform badly. In particular, see JDK-8254078,
DataOutputStream is very slow post-disabling of Biased Locking.

This is not a solved problem, and I don't know what a "typical"
user is, but some users may experience significant performance
degradation. This is not a solved problem.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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