So when I look at my stats I see no cmd_flush commands are being run. cmd_flush is 0 and stays at 0.
On Thursday, June 22, 2017 at 12:44:28 PM UTC-4, Dormando wrote: > > Looks like a weird access pattern. you're filling memory, evicting a bit, > then losing all of it at once. Is your "cmd_flush" counter increasing? > > On Thu, 22 Jun 2017, red 888 wrote: > > > If I look at the slab stats over time I see the % of chunks_used > (relative to total_chunks) spike up (some slab classes hit 45% some hit > 75%) then spike > > down and at the same time they are spiking down evictions spike up. This > happens about every 2-4 minutes. > > > > I've attached a screen shot of this pattern in a time series (raw stats > not phpmemchacheadmin). In the graphs I'm filtering for just one slab class > but I > > see this for all the most active slabs ( roughly 5 active slab classes). > > Inline image 2 > > > > On Jun 21, 2017 2:27 PM, "dormando" <[email protected] <javascript:>> > wrote: > > Is the evictions counter increasing all the time? It might only be > > completely full sometimes, which would cause evictions (like > during peak). > > > > if used is less than total but evictions is going up, either you > have an > > old broken version of memcached or that phpmemcachedadmin thing is > wrong, > > and you should just look at the output of the "stats items" and > "stats > > slabs" commands. > > > > On Wed, 21 Jun 2017, red 888 wrote: > > > > > Here is a snap shot of one of my slab class's stats (from > PHPMemcachedAdmin): > > > > > > [Capture.PNG] > > > > > > > > > So what I'm confused about is why, with my used_chunks so low, > am I getting evictions for this slab class? > > > > > > > > > used_chunks are chunks with items that have not expired yet and > total_chunks is all allocated chunks including chunks with items that > > _have_ expired > > > correct? > > > > > > > > > If thats the case it means if 25% of the allocated chunks are > "used" and 75% of the allocated chunks have expired. So it should have > plenty > > of chunks to > > > reclaim before having to evict I would think. > > > > > > > > > > > > -- > > > > > > --- > > > 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 [email protected] <javascript:>. > > > For more options, visit https://groups.google.com/d/optout. > > > > > > > > > > -- > > > > --- > > 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/VXm-hnGzqXY/unsubscribe. > > To unsubscribe from this group and all its topics, send an email > to [email protected] <javascript:>. > > 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 [email protected] <javascript:>. > > 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
