Think I've asked this a few times; what version are you running? On Thu, 22 Jun 2017, red 888 wrote:
> 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" <dorm...@rydia.net> 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 memcached+...@googlegroups.com. > > > 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 > memcached+...@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+...@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.
