[9] RFR(M): 7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times (original) (raw)

Albert Noll albert.noll at oracle.com
Thu Jan 9 07:21:18 PST 2014

• Previous message: [9] RFR(M): 7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
• Next message: [9] RFR(M): 7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi Roland,

yes, VerifyDependencies is only true in debug builds. This patch should make debug builds execute faster.

Best, Albert

On 01/09/2014 03:54 PM, Roland Westrelin wrote:

Hi Albert,

Problem: The dependency verification code in CodeCache::markfordeoptimization walks over all live nmethods in the code cache and checks all dependencies for each nmethod. This leads to checking the same dependency multiple times which can take a huge amount of time. Isn’t it only when VerifyDependencies is true on non product build? Why does it matter? Roland.

• Previous message: [9] RFR(M): 7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
• Next message: [9] RFR(M): 7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

More information about the hotspot-compiler-dev mailing list