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From: John R. <jr...@bi...> - 2017-08-24 13:02:09
|
> My motivation is a huge binary which takes a lot of time to instrument Please show measurements to substantiate this claim. What is the total /usr/bin/size in bytes of all executable code in the main program and shared libraries? Instrumenting is performed Just-In-Time, with a cache. Is the cache too small for the working set of instructions, and therefore is thrashed much of the time, forcing the re-instrumentation of too many basic blocks? Or does even the first instrumentation for each basic block (that is executed) take too long? And how long is "too long"? |
|
From: Ivo R. <iv...@iv...> - 2017-08-24 08:39:18
|
Dear Valgrind developers, I had just a thought if it would be possible for Valgrind/Memchek to instrument a binary just once, save the instrumented code in a pre-image and then execute it many times already instrumented. My motivation is a huge binary which takes a lot of time to instrument and which is executed frequently during many many test suite runs without any human intervention. What would be the major challenges here? My preliminary idea was that trans-cache could request blocks either from VEX or from the pre-image. Please let me know your thoughts! Thank you, I. |