* [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min
[not found] <a>
@ 2012-07-11 13:24 ` Wanpeng Li
2012-07-11 13:47 ` Michal Hocko
2012-07-19 6:07 ` Kamezawa Hiroyuki
0 siblings, 2 replies; 6+ messages in thread
From: Wanpeng Li @ 2012-07-11 13:24 UTC (permalink / raw)
To: linux-mm
Cc: Johannes Weiner, Michal Hocko, KAMEZAWA Hiroyuki, Andrew Morton,
cgroups, linux-kernel, Wanpeng Li
From: Wanpeng Li <liwp@linux.vnet.ibm.com>
Since hierachical_memory_limit shows "of bytes of memory limit with
regard to hierarchy under which the memory cgroup is", the count should
calculate max hierarchy limit when use_hierarchy in order to show hierarchy
subtree limit. hierachical_memsw_limit is the same case.
Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
---
mm/memcontrol.c | 14 +++++++-------
1 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 69a7d45..6392c0a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3929,10 +3929,10 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
unsigned long long *mem_limit, unsigned long long *memsw_limit)
{
struct cgroup *cgroup;
- unsigned long long min_limit, min_memsw_limit, tmp;
+ unsigned long long max_limit, max_memsw_limit, tmp;
- min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
- min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
+ max_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
+ max_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
cgroup = memcg->css.cgroup;
if (!memcg->use_hierarchy)
goto out;
@@ -3943,13 +3943,13 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
if (!memcg->use_hierarchy)
break;
tmp = res_counter_read_u64(&memcg->res, RES_LIMIT);
- min_limit = min(min_limit, tmp);
+ max_limit = max(max_limit, tmp);
tmp = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
- min_memsw_limit = min(min_memsw_limit, tmp);
+ max_memsw_limit = max(max_memsw_limit, tmp);
}
out:
- *mem_limit = min_limit;
- *memsw_limit = min_memsw_limit;
+ *mem_limit = max_limit;
+ *memsw_limit = max_memsw_limit;
}
static int mem_cgroup_reset(struct cgroup *cont, unsigned int event)
--
1.7.5.4
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min
2012-07-11 13:24 ` [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min Wanpeng Li
@ 2012-07-11 13:47 ` Michal Hocko
[not found] ` <20120711134757.GC4820-VqjxzfR4DlwKmadIfiO5sKVXKuFTiq87@public.gmane.org>
2012-07-19 6:07 ` Kamezawa Hiroyuki
1 sibling, 1 reply; 6+ messages in thread
From: Michal Hocko @ 2012-07-11 13:47 UTC (permalink / raw)
To: Wanpeng Li
Cc: linux-mm, Johannes Weiner, KAMEZAWA Hiroyuki, Andrew Morton,
cgroups, linux-kernel
On Wed 11-07-12 21:24:41, Wanpeng Li wrote:
> From: Wanpeng Li <liwp@linux.vnet.ibm.com>
>
> Since hierachical_memory_limit shows "of bytes of memory limit with
> regard to hierarchy under which the memory cgroup is", the count should
> calculate max hierarchy limit when use_hierarchy in order to show hierarchy
> subtree limit. hierachical_memsw_limit is the same case.
No the patch is wrong. The hierarchical limit says when we start
reclaiming in the hierarchy and that one is triggered on smallest limit
up the way to the hierarchy root.
What are you trying to accomplish here?
> Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
> ---
> mm/memcontrol.c | 14 +++++++-------
> 1 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 69a7d45..6392c0a 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -3929,10 +3929,10 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
> unsigned long long *mem_limit, unsigned long long *memsw_limit)
> {
> struct cgroup *cgroup;
> - unsigned long long min_limit, min_memsw_limit, tmp;
> + unsigned long long max_limit, max_memsw_limit, tmp;
>
> - min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
> - min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> + max_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
> + max_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> cgroup = memcg->css.cgroup;
> if (!memcg->use_hierarchy)
> goto out;
> @@ -3943,13 +3943,13 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
> if (!memcg->use_hierarchy)
> break;
> tmp = res_counter_read_u64(&memcg->res, RES_LIMIT);
> - min_limit = min(min_limit, tmp);
> + max_limit = max(max_limit, tmp);
> tmp = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> - min_memsw_limit = min(min_memsw_limit, tmp);
> + max_memsw_limit = max(max_memsw_limit, tmp);
> }
> out:
> - *mem_limit = min_limit;
> - *memsw_limit = min_memsw_limit;
> + *mem_limit = max_limit;
> + *memsw_limit = max_memsw_limit;
> }
>
> static int mem_cgroup_reset(struct cgroup *cont, unsigned int event)
> --
> 1.7.5.4
>
--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min
[not found] ` <20120711134757.GC4820-VqjxzfR4DlwKmadIfiO5sKVXKuFTiq87@public.gmane.org>
@ 2012-07-12 9:32 ` Wanpeng Li
2012-07-12 10:18 ` Michal Hocko
0 siblings, 1 reply; 6+ messages in thread
From: Wanpeng Li @ 2012-07-12 9:32 UTC (permalink / raw)
To: Michal Hocko
Cc: linux-mm-Bw31MaZKKs3YtjvyW6yDsg, Johannes Weiner,
KAMEZAWA Hiroyuki, Andrew Morton, cgroups-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA, Wanpeng Li
On Wed, Jul 11, 2012 at 03:47:57PM +0200, Michal Hocko wrote:
>On Wed 11-07-12 21:24:41, Wanpeng Li wrote:
>> From: Wanpeng Li <liwp-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
>>
>> Since hierachical_memory_limit shows "of bytes of memory limit with
>> regard to hierarchy under which the memory cgroup is", the count should
>> calculate max hierarchy limit when use_hierarchy in order to show hierarchy
>> subtree limit. hierachical_memsw_limit is the same case.
>
>No the patch is wrong. The hierarchical limit says when we start
>reclaiming in the hierarchy and that one is triggered on smallest limit
>up the way to the hierarchy root.
I see function mem_cgroup_hierachy_reclaim is removal, and hierarchical
reclaim is still work? Could you explain me how it works in details,
thank you for your time Michal.
Thanks & Best Regards,
Wanpeng Li
>
>What are you trying to accomplish here?
>
>> Signed-off-by: Wanpeng Li <liwp.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>> ---
>> mm/memcontrol.c | 14 +++++++-------
>> 1 files changed, 7 insertions(+), 7 deletions(-)
>>
>> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
>> index 69a7d45..6392c0a 100644
>> --- a/mm/memcontrol.c
>> +++ b/mm/memcontrol.c
>> @@ -3929,10 +3929,10 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
>> unsigned long long *mem_limit, unsigned long long *memsw_limit)
>> {
>> struct cgroup *cgroup;
>> - unsigned long long min_limit, min_memsw_limit, tmp;
>> + unsigned long long max_limit, max_memsw_limit, tmp;
>>
>> - min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
>> - min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
>> + max_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
>> + max_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
>> cgroup = memcg->css.cgroup;
>> if (!memcg->use_hierarchy)
>> goto out;
>> @@ -3943,13 +3943,13 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
>> if (!memcg->use_hierarchy)
>> break;
>> tmp = res_counter_read_u64(&memcg->res, RES_LIMIT);
>> - min_limit = min(min_limit, tmp);
>> + max_limit = max(max_limit, tmp);
>> tmp = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
>> - min_memsw_limit = min(min_memsw_limit, tmp);
>> + max_memsw_limit = max(max_memsw_limit, tmp);
>> }
>> out:
>> - *mem_limit = min_limit;
>> - *memsw_limit = min_memsw_limit;
>> + *mem_limit = max_limit;
>> + *memsw_limit = max_memsw_limit;
>> }
>>
>> static int mem_cgroup_reset(struct cgroup *cont, unsigned int event)
>> --
>> 1.7.5.4
>>
>
>--
>Michal Hocko
>SUSE Labs
>SUSE LINUX s.r.o.
>Lihovarska 1060/12
>190 00 Praha 9
>Czech Republic
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min
2012-07-12 9:32 ` Wanpeng Li
@ 2012-07-12 10:18 ` Michal Hocko
0 siblings, 0 replies; 6+ messages in thread
From: Michal Hocko @ 2012-07-12 10:18 UTC (permalink / raw)
To: Wanpeng Li
Cc: linux-mm-Bw31MaZKKs3YtjvyW6yDsg, Johannes Weiner,
KAMEZAWA Hiroyuki, Andrew Morton, cgroups-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA
On Thu 12-07-12 17:32:11, Wanpeng Li wrote:
> On Wed, Jul 11, 2012 at 03:47:57PM +0200, Michal Hocko wrote:
> >On Wed 11-07-12 21:24:41, Wanpeng Li wrote:
> >> From: Wanpeng Li <liwp-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
> >>
> >> Since hierachical_memory_limit shows "of bytes of memory limit with
> >> regard to hierarchy under which the memory cgroup is", the count should
> >> calculate max hierarchy limit when use_hierarchy in order to show hierarchy
> >> subtree limit. hierachical_memsw_limit is the same case.
> >
> >No the patch is wrong. The hierarchical limit says when we start
> >reclaiming in the hierarchy and that one is triggered on smallest limit
> >up the way to the hierarchy root.
>
> I see function mem_cgroup_hierachy_reclaim is removal, and hierarchical
> reclaim is still work?
I am not aware of that.
> Could you explain me how it works in details, thank you for your time
> Michal.
I am not sure I understand what you are interested in.
>
> Thanks & Best Regards,
> Wanpeng Li
> >
> >What are you trying to accomplish here?
> >
> >> Signed-off-by: Wanpeng Li <liwp.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> >> ---
> >> mm/memcontrol.c | 14 +++++++-------
> >> 1 files changed, 7 insertions(+), 7 deletions(-)
> >>
> >> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> >> index 69a7d45..6392c0a 100644
> >> --- a/mm/memcontrol.c
> >> +++ b/mm/memcontrol.c
> >> @@ -3929,10 +3929,10 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
> >> unsigned long long *mem_limit, unsigned long long *memsw_limit)
> >> {
> >> struct cgroup *cgroup;
> >> - unsigned long long min_limit, min_memsw_limit, tmp;
> >> + unsigned long long max_limit, max_memsw_limit, tmp;
> >>
> >> - min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
> >> - min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> >> + max_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
> >> + max_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> >> cgroup = memcg->css.cgroup;
> >> if (!memcg->use_hierarchy)
> >> goto out;
> >> @@ -3943,13 +3943,13 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
> >> if (!memcg->use_hierarchy)
> >> break;
> >> tmp = res_counter_read_u64(&memcg->res, RES_LIMIT);
> >> - min_limit = min(min_limit, tmp);
> >> + max_limit = max(max_limit, tmp);
> >> tmp = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> >> - min_memsw_limit = min(min_memsw_limit, tmp);
> >> + max_memsw_limit = max(max_memsw_limit, tmp);
> >> }
> >> out:
> >> - *mem_limit = min_limit;
> >> - *memsw_limit = min_memsw_limit;
> >> + *mem_limit = max_limit;
> >> + *memsw_limit = max_memsw_limit;
> >> }
> >>
> >> static int mem_cgroup_reset(struct cgroup *cont, unsigned int event)
> >> --
> >> 1.7.5.4
> >>
> >
> >--
> >Michal Hocko
> >SUSE Labs
> >SUSE LINUX s.r.o.
> >Lihovarska 1060/12
> >190 00 Praha 9
> >Czech Republic
--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min
2012-07-11 13:24 ` [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min Wanpeng Li
2012-07-11 13:47 ` Michal Hocko
@ 2012-07-19 6:07 ` Kamezawa Hiroyuki
[not found] ` <5007A418.10801-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
1 sibling, 1 reply; 6+ messages in thread
From: Kamezawa Hiroyuki @ 2012-07-19 6:07 UTC (permalink / raw)
To: Wanpeng Li
Cc: linux-mm, Johannes Weiner, Michal Hocko, Andrew Morton, cgroups,
linux-kernel
(2012/07/11 22:24), Wanpeng Li wrote:
> From: Wanpeng Li <liwp@linux.vnet.ibm.com>
>
> Since hierachical_memory_limit shows "of bytes of memory limit with
> regard to hierarchy under which the memory cgroup is", the count should
> calculate max hierarchy limit when use_hierarchy in order to show hierarchy
> subtree limit. hierachical_memsw_limit is the same case.
>
> Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
Hm ? What is the hierarchical limit for 'C' in following tree ?
A --- limit=1G
\
B -- limit=500M
\
C - unlimtied
Thanks,
-Kame
> ---
> mm/memcontrol.c | 14 +++++++-------
> 1 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 69a7d45..6392c0a 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -3929,10 +3929,10 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
> unsigned long long *mem_limit, unsigned long long *memsw_limit)
> {
> struct cgroup *cgroup;
> - unsigned long long min_limit, min_memsw_limit, tmp;
> + unsigned long long max_limit, max_memsw_limit, tmp;
>
> - min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
> - min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> + max_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
> + max_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> cgroup = memcg->css.cgroup;
> if (!memcg->use_hierarchy)
> goto out;
> @@ -3943,13 +3943,13 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
> if (!memcg->use_hierarchy)
> break;
> tmp = res_counter_read_u64(&memcg->res, RES_LIMIT);
> - min_limit = min(min_limit, tmp);
> + max_limit = max(max_limit, tmp);
> tmp = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
> - min_memsw_limit = min(min_memsw_limit, tmp);
> + max_memsw_limit = max(max_memsw_limit, tmp);
> }
> out:
> - *mem_limit = min_limit;
> - *memsw_limit = min_memsw_limit;
> + *mem_limit = max_limit;
> + *memsw_limit = max_memsw_limit;
> }
>
> static int mem_cgroup_reset(struct cgroup *cont, unsigned int event)
>
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min
[not found] ` <5007A418.10801-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
@ 2012-07-19 6:30 ` Wanpeng Li
0 siblings, 0 replies; 6+ messages in thread
From: Wanpeng Li @ 2012-07-19 6:30 UTC (permalink / raw)
To: Kamezawa Hiroyuki
Cc: Johannes Weiner, Michal Hocko, Andrew Morton,
cgroups-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg
On Thu, Jul 19, 2012 at 03:07:20PM +0900, Kamezawa Hiroyuki wrote:
>(2012/07/11 22:24), Wanpeng Li wrote:
>> From: Wanpeng Li <liwp-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
>>
>> Since hierachical_memory_limit shows "of bytes of memory limit with
>> regard to hierarchy under which the memory cgroup is", the count should
>> calculate max hierarchy limit when use_hierarchy in order to show hierarchy
>> subtree limit. hierachical_memsw_limit is the same case.
>>
>> Signed-off-by: Wanpeng Li <liwp.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>
>Hm ? What is the hierarchical limit for 'C' in following tree ?
>
>A --- limit=1G
> \
> B -- limit=500M
> \
> C - unlimtied
>
Hmm, thank you Kame. :-)
Regards,
Wanpeng Li
>Thanks,
>-Kame
>
>
>> ---
>> mm/memcontrol.c | 14 +++++++-------
>> 1 files changed, 7 insertions(+), 7 deletions(-)
>>
>> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
>> index 69a7d45..6392c0a 100644
>> --- a/mm/memcontrol.c
>> +++ b/mm/memcontrol.c
>> @@ -3929,10 +3929,10 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
>> unsigned long long *mem_limit, unsigned long long *memsw_limit)
>> {
>> struct cgroup *cgroup;
>> - unsigned long long min_limit, min_memsw_limit, tmp;
>> + unsigned long long max_limit, max_memsw_limit, tmp;
>>
>> - min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
>> - min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
>> + max_limit = res_counter_read_u64(&memcg->res, RES_LIMIT);
>> + max_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
>> cgroup = memcg->css.cgroup;
>> if (!memcg->use_hierarchy)
>> goto out;
>> @@ -3943,13 +3943,13 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg,
>> if (!memcg->use_hierarchy)
>> break;
>> tmp = res_counter_read_u64(&memcg->res, RES_LIMIT);
>> - min_limit = min(min_limit, tmp);
>> + max_limit = max(max_limit, tmp);
>> tmp = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
>> - min_memsw_limit = min(min_memsw_limit, tmp);
>> + max_memsw_limit = max(max_memsw_limit, tmp);
>> }
>> out:
>> - *mem_limit = min_limit;
>> - *memsw_limit = min_memsw_limit;
>> + *mem_limit = max_limit;
>> + *memsw_limit = max_memsw_limit;
>> }
>>
>> static int mem_cgroup_reset(struct cgroup *cont, unsigned int event)
>>
>
>
>
>--
>To unsubscribe, send a message with 'unsubscribe linux-mm' in
>the body to majordomo-Bw31MaZKKs0EbZ0PF+XxCw@public.gmane.org For more info on Linux MM,
>see: http://www.linux-mm.org/ .
>Don't email: <a href=mailto:"dont-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org"> email-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org </a>
^ permalink raw reply [flat|nested] 6+ messages in thread
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Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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[not found] <a>
2012-07-11 13:24 ` [PATCH RFC] mm/memcg: calculate max hierarchy limit number instead of min Wanpeng Li
2012-07-11 13:47 ` Michal Hocko
[not found] ` <20120711134757.GC4820-VqjxzfR4DlwKmadIfiO5sKVXKuFTiq87@public.gmane.org>
2012-07-12 9:32 ` Wanpeng Li
2012-07-12 10:18 ` Michal Hocko
2012-07-19 6:07 ` Kamezawa Hiroyuki
[not found] ` <5007A418.10801-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-07-19 6:30 ` Wanpeng Li
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