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  1. JDK
  2. JDK-8243291

Shenandoah: no need to retire TLABs at Init Update Refs

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    • gc
    • b20

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        After JDK-8240872, we update URWM (update reference watermark) at final-mark, where we retire TLABs already. So we don't need to retire TLABs at Init Update Refs, because they are guaranteed to be past URWM.

        This saves about 1.5G of waste on 30G heap in a throwaway scenario for me.

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                shade Aleksey Shipilev
                shade Aleksey Shipilev
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