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Welcome to the Mechanical Sympathy group. This group is for discussing how to code sympathetically for the underlying stack/platform so good performance can be extracted.
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Abhishek Agarwal
, …
Kirk Pepperdine
16
1/2/18
JVM with 100 seconds minor GC
On Jan 2, 2018, at 9:08 AM, pboot...@gmail.com wrote: Abhishek, The fact that you are running on
unread,
GC
jvm
JVM with 100 seconds minor GC
On Jan 2, 2018, at 9:08 AM, pboot...@gmail.com wrote: Abhishek, The fact that you are running on
1/2/18
Tony Guan
,
Leela Mohan
3
12/13/17
Interesting (and weird) kernel behavior about hugepage pool at kernel 3.13
Before the reboot, /proc/buddyinfo would have possibly explained this case. On Monday, 11 December
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GC
Heap
kernel
linux
Interesting (and weird) kernel behavior about hugepage pool at kernel 3.13
Before the reboot, /proc/buddyinfo would have possibly explained this case. On Monday, 11 December
12/13/17
yang liu
, …
Nitsan Wakart
4
9/28/17
jvm stuck in SafepointSynchronize::begin()
Thanks Alex! For future reference to all here: AFAIK lightweight-java-profiler has never progressed
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GC
Java
OpenJDK
Performance
jvm
jvm stuck in SafepointSynchronize::begin()
Thanks Alex! For future reference to all here: AFAIK lightweight-java-profiler has never progressed
9/28/17
Roger Alsing
, …
Oleg Mazurov
13
8/8/17
JVM random performance
I ran the benchmark with a profiler and was able to reproduce both modes, fast and slow. The
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CPU
GC
LockFree
jvm
scalability
threads
JVM random performance
I ran the benchmark with a profiler and was able to reproduce both modes, fast and slow. The
8/8/17
Alexandr Nikitin
, …
Kirk Pepperdine
9
6/5/17
Why does the G1 GC shrink number of regions?
On Jun 5, 2017, at 9:02 PM, Gil Tene <g...@azul.com> wrote: On Monday, June 5, 2017 at 9:47:56
unread,
G1
GC
Performance
jvm
Why does the G1 GC shrink number of regions?
On Jun 5, 2017, at 9:02 PM, Gil Tene <g...@azul.com> wrote: On Monday, June 5, 2017 at 9:47:56
6/5/17
Дмитрий Пеньков
, …
Alex Bagehot
9
1/29/17
Futex flood
you are trying to give 200 JVMs 10 core each. Before separating all 200 JVMs "see" all 80
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GC
Hotspot
Java
futex
jvm
linux
syscall
threads
Futex flood
you are trying to give 200 JVMs 10 core each. Before separating all 200 JVMs "see" all 80
1/29/17
Ivan Kelly
, …
Vitaly Davidovich
17
12/14/16
Minimum realistic GC time for G1 collector on 10GB
Have you tried just setting -Xmx10g and -XX:MaxGCPauseMillis=10? This is typically a good baseline to
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GC
Heap
Hotspot
Java
Latency
OpenJDK
Minimum realistic GC time for G1 collector on 10GB
Have you tried just setting -Xmx10g and -XX:MaxGCPauseMillis=10? This is typically a good baseline to
12/14/16
Miron Aseev
,
Avi Kivity
3
9/18/16
Batching strategies in Netty
Yeah, I think you're right. I'm going to create a topic on the Netty mailing list. Thanks. On
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GC
Java
Netty
Performance
Batching strategies in Netty
Yeah, I think you're right. I'm going to create a topic on the Netty mailing list. Thanks. On
9/18/16
Remko Popma
, …
Anthony Maire
55
6/7/16
Garbage-free Log4j docs preview
On Friday, May 27, 2016 at 12:00:44 AM UTC+9, Kirk Pepperdine wrote: Hi Remko, A simple way to start
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GC
HdrHistogram
Performance
logging
Garbage-free Log4j docs preview
On Friday, May 27, 2016 at 12:00:44 AM UTC+9, Kirk Pepperdine wrote: Hi Remko, A simple way to start
6/7/16
Tech Sigmainfy
11/10/15
Java GARBAGE_COLLECTION_NOTIFICATION Received for NOT A REAL GC with every information being ZERO
Hope anyone can enlighten me about a special garbage collection notification with all the data
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GC
Heap
Java
OpenJDK
jvm
logging
Java GARBAGE_COLLECTION_NOTIFICATION Received for NOT A REAL GC with every information being ZERO
Hope anyone can enlighten me about a special garbage collection notification with all the data
11/10/15
lior simon
, …
Jacob Hansson
22
5/19/15
Java - Reuse String Instances
We did a spike on this a few years ago, playing with trying to get a netty stack allocation free.
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GC
Java
Latency
unsafe
Java - Reuse String Instances
We did a spike on this a few years ago, playing with trying to get a netty stack allocation free.
5/19/15
Ashwin Jayaprakash
, …
Vitaly Davidovich
9
2/20/15
Is it worth clearing out local Collections/Maps after creating and populating them in a method?
Interesting. To me this sounds like some bug/anomaly in how the interpreter oopmap is built - anyone
unread,
GC
Heap
List
jvm
Is it worth clearing out local Collections/Maps after creating and populating them in a method?
Interesting. To me this sounds like some bug/anomaly in how the interpreter oopmap is built - anyone
2/20/15
Janny
, …
Vitaly Davidovich
10
2/18/15
GC Settings for low latency
The other option is to write these systems in a similar style to c/c++: avoid memory allocation on
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GC
GC Settings for low latency
The other option is to write these systems in a similar style to c/c++: avoid memory allocation on
2/18/15
Ramon Nogueira
, …
Michael Barker
13
2/2/14
Azul Zing and the GPL
Hi Ramon, > Yip, I've done this. I'll be sure to report back on what the outcome is. I don
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GC
Latency
OpenJDK
jvm
Azul Zing and the GPL
Hi Ramon, > Yip, I've done this. I'll be sure to report back on what the outcome is. I don
2/2/14
Rajiv Kurian
, …
Peter Lawrey
7
12/24/13
Object pooling on the JVM?
Thanks everyone.
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GC
Performance
Object pooling on the JVM?
Thanks everyone.
12/24/13
Fernando Racca
, …
Kirk Pepperdine
36
7/25/13
Mechanically sympathetic Functional Programming
On 2013-07-25, at 4:59 PM, Gil Tene <g...@azulsystems.com> wrote: On Jul 24, 2013, at 11:59 PM,
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GC
jvm
scala
Mechanically sympathetic Functional Programming
On 2013-07-25, at 4:59 PM, Gil Tene <g...@azulsystems.com> wrote: On Jul 24, 2013, at 11:59 PM,
7/25/13
Michał Warecki
, …
Kirk Pepperdine
38
6/17/13
Shenandoah: A pauseless GC for OpenJDK
Gil, this is information that is simply unknown outside of a select few.. and it's something that
unread,
GC
Java
OpenJDK
Performance
Shenandoah: A pauseless GC for OpenJDK
Gil, this is information that is simply unknown outside of a select few.. and it's something that
6/17/13