Just FYI, at linkedin we encountered this issue many times. And one of our
coworker recently wrote a blog posted about this issue:
https://engineering.linkedin.com/blog/2016/02/eliminating-large-jvm-gc-pauses-caused-by-background-io-traffic
.
Thanks,
-Tao
On Wed, Feb 10, 2016 at 1:04 PM, Srinivas
We've run into similar issues at Twitter, and are readying a patch (re #
(4) of Thomas' mail) for buffering in-memory
and writing to disk/file out-of-line wrt safepoints or loggers. The patch
is under test and review internally at this time,
and we hope to publish it for review on Open JDK once int
Hi,
Well, AFAIK the loggning IS part of STW cycle. I had troubles with this
before, which results in GCs with high systime. Since then I always print
the logs to RAM disk, which solves the problem.
Best Regards,
Gustav Åkesson
Den 9 feb 2016 18:46 skrev "Tao Feng" :
> Hi Jenny, Thomas,
>
> Thank
Hi Jenny, Thomas,
Thanks a lot for your reply. Indeed we observe high real time in gc which
we correlate with high write syscall time. This makes us doubt whether GC
logging is part of cycle.
Thanks,
-Tao
On Tue, Feb 9, 2016 at 2:11 AM, Thomas Schatzl
wrote:
> Hi,
>
> On Mon, 2016-02-08 at 22:
Hi,
On Mon, 2016-02-08 at 22:35 -0800, Yu Zhang wrote:
> Tao,
>
> GC logging is not part of GC STW pause. Though we may see application
> being stopped due to gc logging, if there are a lot of I/O activities
> on the system.
> The gc log file is opened by the following
> _fd = open(file_name, O_W
Tao,
GC logging is not part of GC STW pause. Though we may see application
being stopped due to gc logging, if there are a lot of I/O activities on
the system.
The gc log file is opened by the following
_fd = open(file_name, O_WRONLY | O_CREAT | O_TRUNC, 0666);
Thanks,
Jenny
On 2/4/2016 11:0
