Use LDR_CNTRL on AIX to use 64KB pages and modify removeAixExpectedVars #749
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Signed-off-by: Abdulrahman Alattas <rmnattas@gmail.com>
6 tasks
keithc-ca
requested changes
Mar 8, 2024
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Checking for the options that control enablement of this need to be added (see eclipse-openj9/openj9#19052 (comment)).
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| const char * ldrCntrlName = "LDR_CNTRL"; | ||
| const char *ldrCntrlValue = "TEXTPSIZE=64K@DATAPSIZE=64K@STACKPSIZE=64K@SHMPSIZE=64K"; | ||
| if (setenv(ldrCntrlName, ldrCntrlValue, 0) != 0) { | ||
| fprintf(stderr, "setenv('LDR_CNTRL=TEXTPSIZE=64K@DATAPSIZE=64K@STACKPSIZE=64K@SHMPSIZE=64K') failed: performance may be affected\n"); | ||
| } |
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For consistency, please remove the space after * on line 315.
Also suggest adding this before setting LDR_CNTRL to keep things organized.
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| // OpenJ9 adds MALLOCOPTIONS | ||
| // OpenJ9 adds MALLOCOPTIONS and LDR_CNTRL | ||
| cleanedVars = cleanedVars.replace("MALLOCOPTIONS=multiheap,considersize,", ""); | ||
| cleanedVars = cleanedVars.replace("LDR_CNTRL=TEXTPSIZE=64K@DATAPSIZE=64K@STACKPSIZE=64K@SHMPSIZE=64K,", ""); |
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The method comment should be updated to list all three expected variables.
Likewise, the comment here should name and the code should remove the variables in alphabetic order (the sentence in the comment should end with a period).
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We can improve performance on AIX by setting LDR_CNTRL to use 64KB pages by default.
OpenJ9 Tracker: eclipse-openj9/openj9#19052