What version are you on and what're your startup options, out of curiosity?
A lot of the more recent features can help with memory efficiency, for what it's worth. On Sat, 27 Aug 2016, Joseph Grasser wrote: > > No problem, I'm trying cut down on cost. We're currently using a dedicated > model which works for us on a technical level but is expensive (within budget > but still expensive). > > We are experiencing weird spikes in evictions but I think that is the result > of developers abusing the service. > > Tbh I don't know what to make of the evictions yet. I'm gong to dig into it > on Monday though. > > > On Aug 27, 2016 1:55 AM, "Ripduman Sohan" <ripduman.so...@gmail.com> wrote: > > On Aug 27, 2016 1:46 AM, "dormando" <dorma...@rydia.net> wrote: > > > > Thank you for the tips guys! > > > > The limiting factor for us is actually memory > utilization. We are using the default configuration on sizable ec2 nodes and > pulling only > like 20k qps per node. Which is fine > > because we need to shard the key set over x servers to > handle the mem req (30G) per server. > > > > I should have looked into that before posting. > > > > I am really curious about network saturation though. 200k > gets at 1mb per get is a lot of traffic... how can you hit that mark without > saturation? > > Most people's keys are a lot smaller. In multiget tests > with 40 byte keys > I can pull 20 million+ keys/sec out of the server. probably > less than > 10gbps at that rate too. Tends to cap between 600k and > 800k/s if you need > to do a full roundtrip per key fetch. limited by the NIC. > Lots of tuning > required to get around that. > > > I think (but may be wrong) the 200K TPS result is based on 1K values. > Dormando should be able to correct me. > > 20K TPS does seem a little low though. If you're bound by memory set size > have you thought of the cost/tradeoff benefits of using dedicated servers for > your memcache? > I'm quite interested to find out more about what you're trying to optimise. > Is it minimising number of servers, maximising query rate, both, none, etc? > > Feel free to reach out directly if you can't share this publicly. > > > -- > > --- > You received this message because you are subscribed to a topic in the Google > Groups "memcached" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/memcached/la-0fH1UzyA/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > memcached+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > > -- > > --- > You received this message because you are subscribed to the Google Groups > "memcached" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to memcached+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > > -- --- You received this message because you are subscribed to the Google Groups "memcached" group. To unsubscribe from this group and stop receiving emails from it, send an email to memcached+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
