By optimizing the implementation of java.lang.Long#fastUUID, the performance of
the java.util.UUID#toString method can be significantly improved.
The following are the test results of JMH:
Benchmark Mode Cnt Score Error Units
UUIDUtilsBenchmark.new thrpt
On Wed, 21 Jun 2023 07:58:11 GMT, Alan Bateman wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Benchmark Mo
On Wed, 21 Jun 2023 08:58:53 GMT, Chen Liang wrote:
> > Another thing to try is moving fastUUID out of Long - moving to an array of
> > precomputed hex values means it is not tied to Long internals anymore.
>
> A note about `@Stable`: `Integer.digits` and `HEX256` are not, and they might
> see
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
8310502 : HEX256 initialization use constant val
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
8310502 : hex literal
-
On Wed, 21 Jun 2023 11:06:08 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
add annotation Stable
-
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
simplify code
-
Changes:
- all: htt
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
import ByteOrder
-
Changes:
- all:
On Wed, 21 Jun 2023 19:02:59 GMT, ExE Boss wrote:
>> src/java.base/share/classes/java/lang/Long.java line 563:
>>
>>> 561: StringUTF16.putChar(buf, 7, (byte) i3);
>>> 562: StringUTF16.putChar(buf, 8, '-');
>>> 563: StringUTF16.putChar(buf, 9, (byte) (i4 >> 8))
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
move HEX256 to LongCache
-
On Wed, 21 Jun 2023 15:21:45 GMT, Roger Riggs wrote:
> CDS can initialize arrays efficiently. The Long class already uses CDS to
> initialize the cache of Long values. See the LongCache code for an example of
> initializing from CDS with a fallback to direct initialization. You could
> move th
On Wed, 21 Jun 2023 13:32:32 GMT, 温绍锦 wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> 8310502 : hex literal
>
> * benchmark code
> https://github.com/wenshao/jdk_8310502_test/blob/main/
On Thu, 22 Jun 2023 01:03:11 GMT, Roger Riggs wrote:
> fyi, the title of this PR need to match exactly the title of the bug
> [JDK-8310502](https://bugs.openjdk.org/browse/JDK-8310502). The mismatch is
> an Integration blocker. (See the comment in the description).
i have made the changes. is
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
fix compile error
-
Changes:
- all:
On Thu, 22 Jun 2023 07:16:25 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
use single holder class cache HEX256
---
On Thu, 22 Jun 2023 05:48:34 GMT, Alan Bateman wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> move HEX256 to LongCache
>
> src/java.base/share/classes/java/lang/Long.java line 1233:
>
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
fix compile error
-
Changes:
- all:
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
use ByteArray for COMPACT_STRINGS disable
---
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
revert to non-ByteArray
-
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
use ByteArray & simplify code
--
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
use ByteArray.setInt & setLong
--
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
make fastUUID codeSize less
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
add import & rename HEX to H256
--
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
format code
-
Changes:
- all: htt
On Thu, 22 Jun 2023 21:44:12 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
remove Arrays.fill
-
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
remove unused import
-
On Fri, 23 Jun 2023 04:22:07 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
make Long.fastUUID codeSize less
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
format code
-
Changes:
- all: htt
On Fri, 23 Jun 2023 19:30:31 GMT, ExE Boss wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> format code
>
> src/java.base/share/classes/java/lang/Long.java line 493:
>
>> 491:
On Fri, 23 Jun 2023 04:52:16 GMT, 温绍锦 wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> remove unused import
>
> Latest benchmark results (commit id
> [0d34655](https://github.c
On Sun, 25 Jun 2023 05:49:09 GMT, Alan Bateman wrote:
>> Latest benchmark results (commit id
>> [0d34655](https://github.com/openjdk/jdk/pull/14578/commits/0d346558e00cfab899e435acd0eb83d39d5b7169)
>> ):
>>
>> *
>> [aliyun_c8i.xlarge](https://help.aliyun.com/document_detail/25378.html#c8i)
>
On Fri, 23 Jun 2023 11:24:23 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
On Sun, 25 Jun 2023 05:49:09 GMT, Alan Bateman wrote:
>> Latest benchmark results (commit id
>> [0d34655](https://github.com/openjdk/jdk/pull/14578/commits/0d346558e00cfab899e435acd0eb83d39d5b7169)
>> ):
>>
>> *
>> [aliyun_c8i.xlarge](https://help.aliyun.com/document_detail/25378.html#c8i)
>
On Sun, 25 Jun 2023 05:49:09 GMT, Alan Bateman wrote:
>> Latest benchmark results (commit id
>> [0d34655](https://github.com/openjdk/jdk/pull/14578/commits/0d346558e00cfab899e435acd0eb83d39d5b7169)
>> ):
>>
>> *
>> [aliyun_c8i.xlarge](https://help.aliyun.com/document_detail/25378.html#c8i)
>
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
add jdk.util.HexDigits, sharing cache array
On Sun, 25 Jun 2023 16:20:15 GMT, ExE Boss wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> add jdk.util.HexDigits, sharing cache array across multiple classes,
>> including
On Sun, 25 Jun 2023 16:48:06 GMT, 温绍锦 wrote:
>> src/java.base/share/classes/java/lang/Long.java line 451:
>>
>>> 449: }
>>> 450:
>>> 451: static String fastUUID(long lsb, long msb) {
>>
>> This method should probably have an asse
On Sun, 25 Jun 2023 12:20:17 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
On Sun, 25 Jun 2023 12:20:17 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
move fastUUID implementation to UUID.toString
On Sun, 25 Jun 2023 16:09:51 GMT, Alan Bateman wrote:
>> @AlanBateman i have modified according to liach's suggestion, it's ready for
>> review also.
>
>> @wenshao I don't think this is feasible, for this uses a new feature and
>> hampers backport to jdk11.
>
> I don't think backporting should
On Sun, 25 Jun 2023 20:19:58 GMT, Andrey Turbanov wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> remove JavaLangAccess#fastUUID
>
> src/java.base/share/classes/java/util/UUID.java line 466:
&
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
remove JavaLangAccess#fastUUID
-
On Sun, 25 Jun 2023 16:09:51 GMT, Alan Bateman wrote:
>> @AlanBateman i have modified according to liach's suggestion, it's ready for
>> review also.
>
>> @wenshao I don't think this is feasible, for this uses a new feature and
>> hampers backport to jdk11.
>
> I don't think backporting should
On Mon, 26 Jun 2023 09:26:02 GMT, Andrey Turbanov wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> remove JavaLangAccess#fastUUID
>
> src/java.base/share/classes/java/util/UUID.java line 515:
&
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
use ISO_8859_1.INSTANCE directly instead of Sta
On Mon, 26 Jun 2023 09:57:31 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
On Mon, 26 Jun 2023 09:57:31 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
On Mon, 26 Jun 2023 09:57:31 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
fix UUID.java import, rename jdk.util.HexDigits to
On Tue, 27 Jun 2023 10:08:32 GMT, Chen Liang wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> use ISO_8859_1.INSTANCE directly instead of StandardCharsets.ISO_8859_1
>
> src/java.base/share/cl
On Mon, 26 Jun 2023 09:57:31 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
Update src/java.base/share/classes/jdk/internal/
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
change copyright years, and rename jdk
On Tue, 27 Jun 2023 14:32:14 GMT, Glavo wrote:
>> On second thought, we should be able to create a getter like
>>
>> @ForceInline
>> static short hex256(int byteValue) {
>> return HEX256[byteValue];
>> }
>>
>> and switch usages to that getter instead. This is a better approach than
>> clon
On Tue, 27 Jun 2023 13:54:43 GMT, Roger Riggs wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> fix UUID.java import, rename jdk.util.HexDigits to jdk.util.Hex256 and
>> make private constr
On Tue, 27 Jun 2023 16:35:20 GMT, Alan Bateman wrote:
> > Wenshao hopes to use this array for other optimizations in `java.lang` in
> > the future.
> > But as for this PR, I suggest wenshao not to do so much. I suggest moving
> > `DIGITS` back to `HexDigits` first to make the modifications in t
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
revert to HexDigits.DIGITS, keep this
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
remove unused import, and fix comment
---
Speed up Integer.toString with a precomputed cache array of length 1000, use
division by 1000, so that each iteration can calculate three digits.
this optimization can also be used in StringBuilder#appent(int) and
Long#toString.
# Benchmark Result
make test TEST="micro:java.lang.Integers.to
) Mode Cnt Score Error Units (PR)
> +Integers.toStringBig 500 avgt 15 8.157 ± 0.274 us/op +48.10%
> +Integers.toStringSmall 500 avgt 15 7.207 ± 0.330 us/op -1.22%
> +Integers.toStringTiny 500 avgt 15 6.912 ± 0.199 us/op -8.52%
温绍锦 has updated the pull req
On Wed, 28 Jun 2023 17:53:04 GMT, Raffaello Giulietti
wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> postpone the division
>
> src/java.base/share/classes/java/lang/Integer.java line 478:
&g
On Tue, 27 Jun 2023 16:12:50 GMT, 温绍锦 wrote:
>>> Sadly, jdk.internal.util is exported to other modules so it does need to be
>>> looked at from an integrity perspective.
>>
>> This is indeed a problem to consider.
>>
>> Maybe we can move this array b
On Tue, 27 Jun 2023 14:10:45 GMT, Roger Riggs wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> fix UUID.java import, rename jdk.util.HexDigits to jdk.util.Hex256 and
>> make private constr
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
revert HexDigits.DIGITS private
-
On Thu, 29 Jun 2023 08:46:32 GMT, 温绍锦 wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance
>> of the java.util.UUID#toString method can be significantly improved.
>>
>> The following are the test results of JMH:
>>
>> Ben
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
code format
-
Changes:
- all: htt
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with one additional commit since
the last revision:
code format & comments add endianness
---
Error Units
> UUIDUtilsBenchmark.new thrpt5 92676.550 ± 292.213 ops/ms
> UUIDUtilsBenchmark.original thrpt5 37040.165 ± 1023.532 ops/ms
温绍锦 has updated the pull request incrementally with two additional commits
since the last revision:
- fix comments typo
- Update full name
---
On Wed, 21 Jun 2023 07:28:54 GMT, 温绍锦 wrote:
> By optimizing the implementation of java.lang.Long#fastUUID, the performance
> of the java.util.UUID#toString method can be significantly improved.
>
> The following are the test results of JMH:
>
> Benchmark
On Wed, 28 Jun 2023 22:19:04 GMT, 温绍锦 wrote:
>> Speed up Integer.toString with a precomputed cache array of length 1000, use
>> division by 1000, so that each iteration can calculate three digits.
>>
>> this optimization can also be used in StringBuilder#appent(in
op
> -Integers.toStringTiny 500 avgt 15 6.323 ± 0.239 us/op
>
> +Benchmark (size) Mode Cnt Score Error Units (PR
> commit-id 3355d211)
> +Integers.toStringBig 500 avgt 15 8.279 ± 0.184 us/op (+45.92%)
> +Integers.toStringSmall 500 avg
chmark (size) Mode Cnt Score Error Units (PR Update
> 02 62b499d6)
> +Integers.toStringBig 500 avgt 15 5.493 ± 0.007 us/op (+23.10%)
> +Integers.toStringSmall 500 avgt 15 3.714 ± 0.006 us/op (+20.65%)
> +Integers.toStringTiny 500 avgt 15 2.786 ± 0.015 us/o
chmark (size) Mode Cnt Score Error Units (PR Update
> 02 62b499d6)
> +Integers.toStringBig 500 avgt 15 5.493 ± 0.007 us/op (+23.10%)
> +Integers.toStringSmall 500 avgt 15 3.714 ± 0.006 us/op (+20.65%)
> +Integers.toStringTiny 500 avgt 15 2.786 ± 0.015 us/o
On Fri, 30 Jun 2023 06:26:53 GMT, 温绍锦 wrote:
>> Optimization for:
>>
>> Integer.toString
>> Long.toString
>> StringBuilder#append(int)
>>
>>
>> # Benchmark Result
>>
>>
>> sh make/devkit/createJMHBundl
500 avgt 15 6.753 ± 0.007 us/op
> -Integers.toStringSmall 500 avgt 15 4.470 ± 0.005 us/op
> -Integers.toStringTiny 500 avgt 15 2.764 ± 0.020 us/op
>
> -Benchmark(size) Mode Cnt Score Error Units (baseline)
> -Longs.toStringBig
500 avgt 15 6.753 ± 0.007 us/op
> -Integers.toStringSmall 500 avgt 15 4.470 ± 0.005 us/op
> -Integers.toStringTiny 500 avgt 15 2.764 ± 0.020 us/op
>
> -Benchmark(size) Mode Cnt Score Error Units (baseline)
> -Longs.toStringBig
0 avgt 15 6.753 ± 0.007 us/op
> -Integers.toStringSmall 500 avgt 15 4.470 ± 0.005 us/op
> -Integers.toStringTiny 500 avgt 15 2.764 ± 0.020 us/op
>
> +Benchmark (size) Mode Cnt Score Error Units (PR Update
> 04 f4aa1989)
> +Integers.toStrin
On Thu, 29 Jun 2023 13:45:09 GMT, Roger Riggs wrote:
>> 温绍锦 has updated the pull request incrementally with two additional commits
>> since the last revision:
>>
>> - fix comments typo
>> - Update full name
>
> src/java.base/share/classes/java/uti
[PR 14578 ](https://github.com/openjdk/jdk/pull/14578) still has unresolved
discussions, continue to make improvements.
# Benchmark Result
sh make/devkit/createJMHBundle.sh
bash configure --with-jmh=build/jmh/jars
make test TEST="micro:java.util.UUIDBench.toString"
## 1.
[aliyun_ecs_c8i.xlar
On Sat, 1 Jul 2023 00:01:57 GMT, Jie Fu wrote:
>> can you create a new issue and i continue improving?
>
>> can you create a new issue and i continue improving?
>
> Filed: https://bugs.openjdk.org/browse/JDK-8311207
@liach @RogerRiggs continue discussion in [PR
14745](https://github.com/openjd
On Sat, 1 Jul 2023 02:09:36 GMT, Chen Liang wrote:
> Is using `Unsafe` directly consistently faster than using ByteArray? It
> should have similar performance as ByteArray's VarHandle is simply a wrapper
> around Unsafe's put/get methods.
Using Unsafe on aliyun_ecs_c8i.xlarge and MacBookPro M1
On Sat, 1 Jul 2023 01:44:15 GMT, 温绍锦 wrote:
> [PR 14578 ](https://github.com/openjdk/jdk/pull/14578) still has unresolved
> discussions, continue to make improvements.
>
> # Benchmark Result
>
>
> sh make/devkit/createJMHBundle.sh
> bash configure --with-jmh=build/j
(+7.17%)
>
>
> ## 5. Orange Pi 5 Plus
>
> ``` diff
> -Benchmark (size) Mode Cnt Score Error Units (baseline)
> -UUIDBench.toString 20000 thrpt 15 33.532 ± 0.396 ops/us
>
> +Benchmark (size) Mode Cnt Score Error Units (PR)
> +UU
On Sat, 1 Jul 2023 02:40:22 GMT, 温绍锦 wrote:
>> [PR 14578 ](https://github.com/openjdk/jdk/pull/14578) still has unresolved
>> discussions, continue to make improvements.
>>
>> # Benchmark Result
>>
>>
>> sh make/devkit/createJMHBundle.sh
>>
On Sat, 1 Jul 2023 03:06:31 GMT, Chen Liang wrote:
>> 
>>
>> it's enabled
>
>> > @wenshao I have made my suggestions into a patch for you:
>> > [wenshao#1](https://github.com/wenshao/jdk/pull/1) Feel fre
(+7.17%)
>
>
> ## 5. Orange Pi 5 Plus
>
> ``` diff
> -Benchmark (size) Mode Cnt Score Error Units (baseline)
> -UUIDBench.toString 20000 thrpt 15 33.532 ± 0.396 ops/us
>
> +Benchmark (size) Mode Cnt Score Error Units (PR)
&g
On Sat, 1 Jul 2023 03:06:31 GMT, Chen Liang wrote:
>> 
>>
>> it's enabled
>
>> > @wenshao I have made my suggestions into a patch for you:
>> > [wenshao#1](https://github.com/wenshao/jdk/pull/1) Feel fre
On Sat, 1 Jul 2023 03:06:31 GMT, Chen Liang wrote:
>> 
>>
>> it's enabled
>
>> > @wenshao I have made my suggestions into a patch for you:
>> > [wenshao#1](https://github.com/wenshao/jdk/pull/1) Feel fre
(+7.17%)
>
>
> ## 5. Orange Pi 5 Plus
>
> ``` diff
> -Benchmark (size) Mode Cnt Score Error Units (baseline)
> -UUIDBench.toString 20000 thrpt 15 33.532 ± 0.396 ops/us
>
> +Benchmark (size) Mode Cnt Score Error Units (PR)
> +U
0 avgt 15 6.753 ± 0.007 us/op
> -Integers.toStringSmall 500 avgt 15 4.470 ± 0.005 us/op
> -Integers.toStringTiny 500 avgt 15 2.764 ± 0.020 us/op
>
> +Benchmark (size) Mode Cnt Score Error Units (PR Update
> 04 f4aa1989)
> +Integers.toStrin
0 avgt 15 6.753 ± 0.007 us/op
> -Integers.toStringSmall 500 avgt 15 4.470 ± 0.005 us/op
> -Integers.toStringTiny 500 avgt 15 2.764 ± 0.020 us/op
>
> +Benchmark (size) Mode Cnt Score Error Units (PR Update
> 04 f4aa1989)
> +Integers.toStrin
(+7.17%)
>
>
> ## 5. Orange Pi 5 Plus
>
> ``` diff
> -Benchmark (size) Mode Cnt Score Error Units (baseline)
> -UUIDBench.toString 20000 thrpt 15 33.532 ± 0.396 ops/us
>
> +Benchmark (size) Mode Cnt Score Error Units (PR)
> +UUI
(+7.17%)
>
>
> ## 5. Orange Pi 5 Plus
>
> ``` diff
> -Benchmark (size) Mode Cnt Score Error Units (baseline)
> -UUIDBench.toString 20000 thrpt 15 33.532 ± 0.396 ops/us
>
> +Benchmark (size) Mode Cnt Score Error U
On Sun, 2 Jul 2023 01:27:26 GMT, Chen Liang wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> use upper case for static final field
>
> src/java.base/share/classes/java/lang/StringUT
On Sun, 2 Jul 2023 02:05:48 GMT, Chen Liang wrote:
>> 温绍锦 has updated the pull request incrementally with one additional commit
>> since the last revision:
>>
>> use upper case for static final field
>
> src/java.base/share/classes/java/lang/StringUTF16.java lin
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