[TCWG] BOLT - Binary optimization and layout tool

[Prathamesh Kulkarni]

Just came across Facebook's announcement of open-sourcing BOLT, a tool
for optimising instruction cache and TLB misses. Looks interesting.
They claim to get 2-15% perf improvement in their services with BOLT
and have a port for aarch64:
https://code.facebook.com/posts/605721433136474/accelerate-large-scale-applications-with-bolt/

Regards,
Prathamesh

[Prathamesh Kulkarni]

Please ignore, sent to the wrong list.
Sorry for the noise.

Regards,
Prathamesh

On 20 June 2018 at 00:34, Prathamesh Kulkarni

Post by Prathamesh Kulkarni
Just came across Facebook's announcement of open-sourcing BOLT, a tool
for optimising instruction cache and TLB misses. Looks interesting.
They claim to get 2-15% perf improvement in their services with BOLT
https://code.facebook.com/posts/605721433136474/accelerate-large-scale-applications-with-bolt/
Regards,
Prathamesh

[Adhemerval Zanella]

Interesting how companies keep reinventing the same idea. I came across a
similar tool at IBM 10 years ago name fdprpro which did exactly the same:
it was a post-link optimization tool, which used feedback information
from an instrumented run (similar to PGO) and rebuild the binary with
certain optimizations. The advantage was it did not required the source
code, as BOLT, and it obtained the profile information directly from
hardware counters.

I heard the DB2 team did use it and got some nice improvements in some
workloads, in the order of 5% to 10%.

Post by Prathamesh Kulkarni
Please ignore, sent to the wrong list.
Sorry for the noise.
Regards,
Prathamesh
On 20 June 2018 at 00:34, Prathamesh Kulkarni

Post by Prathamesh Kulkarni
Just came across Facebook's announcement of open-sourcing BOLT, a tool
for optimising instruction cache and TLB misses. Looks interesting.
They claim to get 2-15% perf improvement in their services with BOLT
https://code.facebook.com/posts/605721433136474/accelerate-large-scale-applications-with-bolt/
Regards,
Prathamesh

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