A lot of things have changed since 2015. For example, new ASan features could've been introduced that increase the slowdown. Maybe some previously disabled features got enabled by default. Maybe there were changes to the runtime (e.g. the allocator), or a newly added interceptor increased the number of checks on your hot path. If you can reduce your program to a small testcase that demonstrates the same slowdown that could help to understand what is going on.
On Tue, May 28, 2019 at 4:29 PM xfan <[email protected]> wrote: > > We upgrade gcc from 4.8.5 to 8.3 recently and found address sanitizer > performance becomes worse. > On gcc 4.8.5, performance slowdown is 4 times, and on gcc 8.3, performance > slowdown is 6.3 times. OS: Red hat Linux. > Any idea? > Thanks, > Xingyan > > > -- > You received this message because you are subscribed to the Google Groups > "address-sanitizer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/address-sanitizer/aa8adbc3-94b7-4c31-af74-682688c8d382%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "address-sanitizer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/address-sanitizer/CAE4VGWyoZpX7W9ND4W-vJ-DgRjZqN57rLekFJpo0%2Bpvtv8CnFQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
