On 19/06/2015 12:56, Alexandre Derumier wrote:
> This adds "--enable-jemalloc" and "--disable-jemalloc" to allow linking
> to jemalloc memory allocator.
>
> We have already tcmalloc support,
> but it seem to not working well with a lot of iothreads/disks.
>
> The main problem is that tcmalloc u
>>You can try using or modifying this systemtap script:
Thanks, I'll check this.
If it can help, I have done a small top of qemu libc vs jemalloc vs tcmalloc
libc-2.19.so
-
started
---
PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND
5294 root
On 23/06/2015 10:22, Alexandre DERUMIER wrote:
> > What is the peak memory usage of jemalloc and tcmalloc?
>
> I'll try to use an heap profiling to see.
> Don't known if "perf" can give me the info easily without profiling ?
You can try using or modifying this systemtap script:
https://sourcew
Hi Paolo,
>>What is the peak memory usage of jemalloc and tcmalloc?
I'll try to use an heap profiling to see.
Don't known if "perf" can give me the info easily without profiling ?
- Mail original -
De: "pbonzini"
À: "aderumier" , "qemu-devel"
Envoyé: Mardi 23 Juin 2015 09:57:19
Objet
On 19/06/2015 12:56, Alexandre Derumier wrote:
> This adds "--enable-jemalloc" and "--disable-jemalloc" to allow linking
> to jemalloc memory allocator.
>
> We have already tcmalloc support,
> but it seem to not working well with a lot of iothreads/disks.
>
> The main problem is that tcmalloc u
On Fri, 06/19 12:56, Alexandre Derumier wrote:
> This adds "--enable-jemalloc" and "--disable-jemalloc" to allow linking
> to jemalloc memory allocator.
>
> We have already tcmalloc support,
> but it seem to not working well with a lot of iothreads/disks.
>
> The main problem is that tcmalloc use
@cc Fam Zheng ,
as he's the author of tcmalloc support patch
- Mail original -
De: "aderumier"
À: "qemu-devel"
Cc: "aderumier"
Envoyé: Vendredi 19 Juin 2015 12:56:58
Objet: [PATCH] configure: Add support for jemalloc
This adds "--enable-jemalloc" and "--disable-jemalloc" to allow link
This adds "--enable-jemalloc" and "--disable-jemalloc" to allow linking
to jemalloc memory allocator.
We have already tcmalloc support,
but it seem to not working well with a lot of iothreads/disks.
The main problem is that tcmalloc use a shared thread cache of 16MB
by default.
With more threads,
