On 5/8/23 10:42, - wrote:
Thank you for your quick response!
I just took a few hours and successfully set up and built from WSL 1.
It indeed is even faster than cygwin.
Meanwhile, it's fascinating that the relative directory problem
doesn't exist on WSL 1, that passing build/jmh/jars allows configure
to locate JMH just fine.
Since WSL 1 and WSL 2 have such dramatic differences, should we
briefly mention in building documentation that building with WSL
should be primarily done with WSL 1, given now the default WSL
installed from Microsoft Store only supports WSL 2?
I assumed the documentation had been updated to reflect that already
back when the problems with WSL 2 were discovered, but looking now,
there is nothing there. I suppose WSL 1 was still default at that time.
Yes, I think we should update the documentation, especially if the
default has changed to WSL 2.
/Erik
Gratefully,
Chen Liang
On Mon, May 8, 2023 at 8:36 AM <erik.joels...@oracle.com> wrote:
Hello Chen,
On 5/5/23 22:42, - wrote:
Hello,
While I was trying to diagnose the problem that JMH benchmarks can't
be run on a fresh cygwin or WSL environment,
https://bugs.openjdk.org/browse/JDK-8305669 I found myself troubled
with path issues and slow building speed with a Windows target.
Meanwhile the linux target is totally fine.
1. When I pass --with-jmh=build/jmh/jars in WSL configuration, it
always fails to find the relative directories (not present on linux
configuration). C:\\...\\jdk\\build\\jmh\\jars doesn't work. Only
/mnt/c/.../jdk/build/jmh/jars work. Is this a bug?
I would say it's a bug.
2. My Windows WSL build is extremely slow. My windows target has
almost stalled that it stuck on creating benchmark jar without even
progressing to indify. And it seems WSL (Ubuntu) itself is only using
400MB of RAM with almost no CPU usage. However, these problems don't
happen for my Linux target builds; meanwhile my cygwin builds are
blazingly fast. What could be the cause of this slowness?
Are you running WSL 1 or 2? From what I've heard, WSL 2 doesn't work
well when having to interact with native Windows tools (which the
windows build has to do). Most reports I've heard about WSL 1 say it's
slightly faster than Cygwin, but different people and different
environments have different results.
/Erik
