Re: Hardware configuration used for memcached

2014-04-11 Thread Henrik Schröder
As much RAM in total as data you need cached. On Thu, Apr 10, 2014 at 12:05 AM, Vakul Garg wrote: > Hi > > Can someone shed a light on typical hardware configuration used for > memcached installations in data centers? > > Regards > > Vakul > > -- > > --- > You received this message because you

Re: Idea for reclaimation algo

2014-04-11 Thread dormando
s/pagging/padding/. gah. On Fri, 11 Apr 2014, dormando wrote: > > > On Fri, 11 Apr 2014, Slawomir Pryczek wrote: > > > Hi Dormando, more about the behaviour... when we're using "normal" > > memcached 1.4.13 16GB of memory gets exhausted in ~1h, then we start to have > > almost instant evictions

Re: Idea for reclaimation algo

2014-04-11 Thread dormando
On Fri, 11 Apr 2014, Slawomir Pryczek wrote: > Hi Dormando, more about the behaviour... when we're using "normal" memcached > 1.4.13 16GB of memory gets exhausted in ~1h, then we start to have > almost instant evictions of needed items (again these items aren't really > "needed" individually,

Re: Idea for reclaimation algo

2014-04-11 Thread Les Mikesell
On Fri, Apr 11, 2014 at 3:47 AM, Slawomir Pryczek wrote: > > When using memcached as a buffer for mysql writes, we know exactly what to > hit and when. Short TTL expired items, pile up near the head... long TTL > "live" items pile up near the tail and it's creating a barrier that prevents > the LR

Re: Idea for reclaimation algo

2014-04-11 Thread Slawomir Pryczek
Hi Dormando, more about the behaviour... when we're using "normal" memcached 1.4.13 16GB of memory gets exhausted in ~1h, then we start to have almost instant evictions of needed items (again these items aren't really "needed" individually, just when many of them gets evicted it's unacceptable