From xiang.dai at iluvatar.ai  Tue Jan 14 09:40:45 2020
From: xiang.dai at iluvatar.ai (Dai Xiang)
Date: Tue, 14 Jan 2020 17:40:45 +0800
Subject: JDK13 download for mips
Message-ID: <20200114094045.GA7784@linux>

Hi!

Is it available to download JDK13 for mips?

If not, where can i download lower version, like JDK11 or JDK8?

It would be better if code source or download link shows at
https://openjdk.java.net/projects/mips-port.

-- 
Best Regards
Dai Xiang

From aoqi at loongson.cn  Tue Jan 14 14:40:11 2020
From: aoqi at loongson.cn (Ao Qi)
Date: Tue, 14 Jan 2020 22:40:11 +0800
Subject: JDK13 download for mips
In-Reply-To: <20200114094045.GA7784@linux>
References: <20200114094045.GA7784@linux>
Message-ID: <CALjzQn7hc5pvVitSCazLJ3AXUfas5j+2jza-+jR2uAUFj6vkXQ@mail.gmail.com>

Hi Dai Xiang,

On Tue, Jan 14, 2020 at 5:40 PM Dai Xiang <xiang.dai at iluvatar.ai> wrote:
>
> Hi!
>
> Is it available to download JDK13 for mips?

If the question is whether there is upstream source code of jdk13 for
mips, the answer is yes and they are
http://hg.openjdk.java.net/jdk/jdk13 and
http://hg.openjdk.java.net/jdk-updates/jdk13u. The zero of jdk13 works
on mips, but it is an interpreter version. If you are looking for an
upstream build, I think it is not available. Maybe you could find a
downstream build in some Linux distributions, like Debian.

Loongson maintains a mips64 port of jdk13, which is a server version.
We have released an ea build of jdk13 mips port [1]. It is built with
-march=loongson3a, so there would be problems if you run it on a
non-Loongson CPU.

>
> If not, where can i download lower version, like JDK11 or JDK8?

The upstream mips port of jdk11 and jdk8 is in a similar situation to
jdk13. Only zero/interpreter is there.

We also maintain a mips64 port of jdk11u and jdk8u. We have not
released jdk11 yet. The repo of jdk8u could be found here [2]. The
latest jdk8u build could be found here [3]. It is also built with
-march=loongson3a.

>
> It would be better if code source or download link shows at
> https://openjdk.java.net/projects/mips-port.

I think Dalibor Topic is the right one to edit the page. However, in
my opinion, the source code position is the same as the other port,
and there is no download link, so nothing could be shown at
https://openjdk.java.net/projects/mips-port :)

Cheers,
Ao Qi

[1] http://ftp.loongnix.org/toolchain/java/openjdk13/loongson13-ea-jdk13+33-20190916-linux-loongson3a.tar.gz
[2] http://hg.loongnix.org
[3] http://ftp.loongnix.org/toolchain/java/openjdk8/loongson_openjdk8.1.3-jdk8u212b03-linux-loongson3a.tar.gz

>
> --
> Best Regards
> Dai Xiang


From xiang.dai at iluvatar.ai  Wed Jan 15 06:41:39 2020
From: xiang.dai at iluvatar.ai (Xiang Dai)
Date: Wed, 15 Jan 2020 06:41:39 +0000
Subject: JDK13 download for mips
In-Reply-To: <CALjzQn7hc5pvVitSCazLJ3AXUfas5j+2jza-+jR2uAUFj6vkXQ@mail.gmail.com>
References: <20200114094045.GA7784@linux>,
 <CALjzQn7hc5pvVitSCazLJ3AXUfas5j+2jza-+jR2uAUFj6vkXQ@mail.gmail.com>
Message-ID: <7a9a3a9cea6d479683bb578ba55b5218@iluvatar.ai>

Thanks a lot!


I have tried with loongson JDK13 and find there is 200-400x performance degradation about kafka\hdfs\spark compared with JDK13 on x86 machine.


Have you tested their benchmark? Is there any tuning way?


Best Wishes

________________________________
From: Ao Qi <aoqi at loongson.cn>
Sent: Tuesday, January 14, 2020 10:40:11 PM
To: Xiang Dai
Cc: mips-port at openjdk.java.net
Subject: Re: JDK13 download for mips

Hi Dai Xiang,

On Tue, Jan 14, 2020 at 5:40 PM Dai Xiang <xiang.dai at iluvatar.ai> wrote:
>
> Hi!
>
> Is it available to download JDK13 for mips?

If the question is whether there is upstream source code of jdk13 for
mips, the answer is yes and they are
http://hg.openjdk.java.net/jdk/jdk13 and
http://hg.openjdk.java.net/jdk-updates/jdk13u. The zero of jdk13 works
on mips, but it is an interpreter version. If you are looking for an
upstream build, I think it is not available. Maybe you could find a
downstream build in some Linux distributions, like Debian.

Loongson maintains a mips64 port of jdk13, which is a server version.
We have released an ea build of jdk13 mips port [1]. It is built with
-march=loongson3a, so there would be problems if you run it on a
non-Loongson CPU.

>
> If not, where can i download lower version, like JDK11 or JDK8?

The upstream mips port of jdk11 and jdk8 is in a similar situation to
jdk13. Only zero/interpreter is there.

We also maintain a mips64 port of jdk11u and jdk8u. We have not
released jdk11 yet. The repo of jdk8u could be found here [2]. The
latest jdk8u build could be found here [3]. It is also built with
-march=loongson3a.

>
> It would be better if code source or download link shows at
> https://openjdk.java.net/projects/mips-port.

I think Dalibor Topic is the right one to edit the page. However, in
my opinion, the source code position is the same as the other port,
and there is no download link, so nothing could be shown at
https://openjdk.java.net/projects/mips-port :)

Cheers,
Ao Qi

[1] http://ftp.loongnix.org/toolchain/java/openjdk13/loongson13-ea-jdk13+33-20190916-linux-loongson3a.tar.gz
[2] http://hg.loongnix.org
[3] http://ftp.loongnix.org/toolchain/java/openjdk8/loongson_openjdk8.1.3-jdk8u212b03-linux-loongson3a.tar.gz

>
> --
> Best Regards
> Dai Xiang

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.java.net/pipermail/mips-port/attachments/20200115/38385d7f/attachment.htm>