How much extra memory do ASAN builds use?

[David Lam]

How much extra memory do ASAN builds use? There's a paper from 2012 saying that:

https://www.usenix.org/system/files/conference/atc12/atc12-final39.pdf

> AddressSanitizer finds out-of-bounds accesses (for heap, stack, and global objects) and uses of freed heap memory at the relatively low cost of 73% slowdown and 3.4x increased memory usage, making it a good choice for testing a wide range of C/C++ applications.

Is this still current?

Thanks!

[Evgenii Stepanov]

Depends on the application a lot. There is a large constant overhead
component; then there is the quarantine that has the upper per-thread
limit, which means long-running processes tend to use more RAM with
time, but also saturate at some point. This can be tuned with runtime
flags.

We often see somewhere between 2x and 3x memory overhead on large programs.

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[Alexei Fedotov]

Hello,

are there are any options to ASAN to decrease virtual memory consumption?

With best regards, Alexei

четверг, 2 мая 2019 г. в 22:53:08 UTC+2, Evgeniy Stepanov: