Ahhhh crap, I think I see it. Can you add: `-f 1.25` *after* the -o stuff?
like this: `-C -m 10240 -I 20m -c 4096 -o modern,slab_chunk_max=1048576 -f 1.25` And test that out, please? I might have to back out some over-aggressive switches... and I keep thinking of making this particular problem (which I'll talk about if confirmed) a startup error :( On Fri, 12 Aug 2016, andr...@vimeo.com wrote: > Here you go. > Yes, 1.4.25 is running with `-C -m 10240 -I 20m -c 4096 -o > maxconns_fast,hash_algorithm=murmur3,lru_maintainer,lru_crawler,slab_reassign,slab_automove`. > 1.4.30 is running with `-C -m 10240 -I 20m -c 4096 -o > modern,slab_chunk_max=1048576`. > > > On Friday, August 12, 2016 at 2:32:59 PM UTC-4, Dormando wrote: > Hey, > > any chance I could see `stats slabs` output as well? a lot of the data's > in there. Need all three: stats, stats items, stats slabs > > Also, did you try 1.4.30 with `-o slab_chunk_max=1048576` as well? > > thanks > > On Fri, 12 Aug 2016, and...@vimeo.com wrote: > > > Thanks! That's an improvement. It's still worse than older versions, > but it's better than 1.4.29. This time it made it up to about 1.75GB/10GB > used before it > started evicting; > > I left it running for another 8 hours and it got up to 2GB, but no > higher. > > Here's some stats output from the old and new versions, in case you > can puzzle anything out of it. > > > > Thanks, > > > > Andrew > > > > > > On Thursday, August 11, 2016 at 6:14:26 PM UTC-4, Dormando wrote: > > Hi, > > > > https://github.com/memcached/memcached/wiki/ReleaseNotes1430 > > > > Can you please try this? And let me know how it goes either way > :) > > > > On Wed, 10 Aug 2016, dormando wrote: > > > > > Hey, > > > > > > Thanks and sorry about that. I just found a bug this week > where the new > > > code is over-allocating (though 30MB out of 10G limit seems > odd?) > > > > > > ie: with -I 2m, it would allocate 2 megabytes of memory and > then only use > > > up to 1mb of it. A one-line fix for a missed variable > conversion. > > > > > > Will likely do a bugfix release later tonight with that and a > few other > > > things. > > > > > > Will take a look at your data in hopes it's the same issue at > least, > > > thanks! > > > > > > On Wed, 10 Aug 2016, and...@vimeo.com wrote: > > > > > > > I decided to give this a try on a production setup that has > a very bimodal size distribution (about a 50/50 split of 10k-100k values and > 1M-10M values) > and > > lots of writes, > > > > where we've been running with "-I 10m -m 10240" for a > while. It didn't go so great. Almost immediately there were lots and lots of > evictions, even > though the > > used memory was > > > > only about 30MB of the 10GB limit, and the number of active > keys grew very slowly. "-o slab_chunk_max=1048576" may have had some effect, > but it didn't > really > > seem like it. > > > > Setting "slabs automove 2" (usually 1) reduced evictions > about 50% but it still wasn't enough to get acceptable performance. > > > > I've rolled back to 1.4.25 for the moment, but I'm > attaching a log with "stats" and "stats items" from yesterday. "stats sizes" > wasn't available due to > -C, and > > the log isn't > > > > from as long after startup as I would like, but it's what I > got, sorry. > > > > > > > > Let me know if there's anything else I can do to help. > > > > > > > > Thanks, > > > > > > > > Andrew > > > > > > > > On Wednesday, July 13, 2016 at 8:08:49 PM UTC-4, Dormando > wrote: > > > > > https://github.com/memcached/memcached/wiki/ReleaseNotes1429 > > > > > > > > enjoy. > > > > > > > > -- > > > > > > > > --- > > > > 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+...@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. 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