>Your evictions are literally zero, in these stats. You saw them before,
when the instances were smaller?
Yes we have seen it and it impacted the business as well.
>There're a maximum of 63 classes, so making the number smaller has a
limited effect. The more slab classes you have, the harder th
> >Also your instance hasn't even malloc'ed half of its memory limit. You
> have over 6 gigabytes unused. There aren't any evictions despite the
> uptime being over two months.
> Was eviction of active items expeted as well? We have eviction of unsed and
> unfetched items.
Your evictions are
>you said you were seeing evictions? Was this on a different instance?
Yes we had this issue before and therefore we provisioned larger instance
to fix that temporarily. But now we want to reduce cost by using instance
with less memory.
>I don't really have any control or influence over what am
you said you were seeing evictions? Was this on a different instance?
I don't really have any control or influence over what amazon deploys for
elasticache. They've also changed the daemon. Some of your settings are
different from the defaults that 1.5.10 has (automove should default to 1
and hash
yes
On Wednesday, July 8, 2020 at 9:35:19 AM UTC+5:30, Dormando wrote:
>
> Oh, so this is amazon elasticache?
>
> On Tue, 7 Jul 2020, Shweta Agrawal wrote:
>
> > We use aws for deployment and don't have that information. What
> particularly looks odd in settings?
> >
> > On Wednesday, July 8
Oh, so this is amazon elasticache?
On Tue, 7 Jul 2020, Shweta Agrawal wrote:
> We use aws for deployment and don't have that information. What particularly
> looks odd in settings?
>
> On Wednesday, July 8, 2020 at 8:10:04 AM UTC+5:30, Dormando wrote:
> what're your start arguments? the s
We use aws for deployment and don't have that information. What
particularly looks odd in settings?
On Wednesday, July 8, 2020 at 8:10:04 AM UTC+5:30, Dormando wrote:
>
> what're your start arguments? the settings look a little odd. ie; the full
> commandline (censoring anything important) that
what're your start arguments? the settings look a little odd. ie; the full
commandline (censoring anything important) that you used to start
memcached
On Tue, 7 Jul 2020, Shweta Agrawal wrote:
> Sorry. Here it is.
>
> On Wednesday, July 8, 2020 at 12:38:38 AM UTC+5:30, Dormando wrote:
> 'st
Sorry. Here it is.
On Wednesday, July 8, 2020 at 12:38:38 AM UTC+5:30, Dormando wrote:
>
> 'stats settings' file is empty
>
> On Tue, 7 Jul 2020, Shweta Agrawal wrote:
>
> > Hi Dormando,
> > Got the stats for production. Please find attached files for stats
> settings. stats items, stats, stat
'stats settings' file is empty
On Tue, 7 Jul 2020, Shweta Agrawal wrote:
> Hi Dormando,
> Got the stats for production. Please find attached files for stats settings.
> stats items, stats, stats slabs. Summary for all slabs.
>
> Other details that might help:
> * TTL is two days or more.
> *
Got it. Thank you for the explanation :)
On Sunday, July 5, 2020 at 9:10:23 AM UTC+5:30, Dormando wrote:
>
> On Sat, 4 Jul 2020, Shweta Agrawal wrote:
>
> > > the rest is free memory, which should be measured separately.
> > free memory for a class will be : (free_chunks * chunk_size)
> > And
On Sat, 4 Jul 2020, Shweta Agrawal wrote:
> > the rest is free memory, which should be measured separately.
> free memory for a class will be : (free_chunks * chunk_size)
> And total memory reserved by a class will be : (total_pages*page_size)
>
> > If you're getting evictions in class A but ther
(memory_requested / (chunk_size * chunk_used)) * 100
is roughly the storage overhead of memory used in the system. the rest is
free memory, which should be measured separately. If you're getting
evictions in class A but there's too much free memory in classes C, D, etc
then you have a balance issu
> I'll need the raw output from "stats items" and "stats slabs". I don't
> think that efficiency column is very helpful.
ohkay no worries. I can get by Tuesday and will share.
Efficiency for each slab is calcuated as
(("stats slabs" -> memory_requested) / (("stats slabs" -> total_pages) *
pa
ah okay.
I'll need the raw output from "stats items" and "stats slabs". I don't
think that efficiency column is very helpful.
On Fri, 3 Jul 2020, Shweta Agrawal wrote:
>
>
> On Saturday, July 4, 2020 at 9:41:49 AM UTC+5:30, Dormando wrote:
> No attachment
>
> On Fri, 3 Jul 2020, Shwe
On Saturday, July 4, 2020 at 9:41:49 AM UTC+5:30, Dormando wrote:
>
> No attachment
>
> On Fri, 3 Jul 2020, Shweta Agrawal wrote:
>
> >
> > Wooo...so quick. :):)
> > > Correct, close. It actually uses more like 3 512k chunks and then one
> > > smaller chunk from a different class to fit exa
No attachment
On Fri, 3 Jul 2020, Shweta Agrawal wrote:
>
> Wooo...so quick. :):)
> > Correct, close. It actually uses more like 3 512k chunks and then one
> > smaller chunk from a different class to fit exactly 1.6MB.
> I see.Got it.
>
> >Can you share snapshots from "stats items" and "stats s
Sorry forgot to mention. summary is from one instance. Instance has 13 GB
of RAM
On Saturday, July 4, 2020 at 9:22:13 AM UTC+5:30, Shweta Agrawal wrote:
>
>
> Wooo...so quick. :):)
>
> > Correct, close. It actually uses more like 3 512k chunks and then one
> > smaller chunk from a different clas
Hey,
> Putting my understanding to re-confirm:
> 1) Page size will always be 1MB and we cannot change it.Moreover, it's not
> required to be changed.
Correct.
> 2) We can store items larger than 1MB and it is done by combining chunks
> together. (example: let's say item size: ~1.6MB --> 4 slab
Hi Dormando,
Thanks a lot for the quick and promt reply.
*Putting my understanding to re-confirm:*
1) Page size will always be 1MB and we cannot change it.Moreover, it's not
required to be changed.
2) We can store items larger than 1MB and it is done by combining chunks
together. (example: let
Hey,
Looks like I never updated the manpage. In the past the item size max was
achieved by changing the slab page size, but that hasn't been true for a
long time.
>From ./memcached -h:
-m, --memory-limit= item memory in megabytes (default: 64)
... -m just means the memory limit in megabytes, ab
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