Yo, PLEASE MAKE LOTS OF TESTING!
http://code.google.com/p/memcached/wiki/ReleaseNotes142rc1 This release comes again with many bugfixes, and a small number of useful features, described briefly in the release notes above. 1.4.2 final will be up in 2-3 days, based on response to testing. We feel that this release is of high quality. Linux hugetlbfs support is cool (eek a few % more speed out of memory accesses). The new evictions_nonzero per-slab counter is also cool, as you now have a seperate counter for evictions that had an explicit expiration time. However, this release comes with a loaded handgun. Please do not point it at your feet. Or put it in your mouth. Or point it at your friends. The [in]famous 1MB item size limit is now a start time tunable (-I) As described in the release notes, it accepts a few formats: -I 2048 ^ bytes -I 128k ^ kilobytes -I 2m ^ megabytes This doesn't *just* raise the item limit. What this actually does is raise the size of the slab page. Previously, the slabber works like: "Hello! I need 50 bytes of memory for this fancy value I have here." "Okay, have a chunk from slab 1. Oh, but there's no RAM here. Hold on I'll grab a page and butcher it." ... Then it fetches a 1MB page, then cuts it up into 10,000 little pieces, and hands back the caller a small chunk. If you set -I 64m, however. "Hello! I need 50 bytes of memory for this fancy value I have here." "Hold on let me get the truck. Also the chainsaw." So before you abuse this value in the *upwards* direction, you should give it some serious thought. On that note, it is useful to limit the maximum item size to be smaller than a megabyte. I'll be beating up the FAQ over the next few days for the next round of usual clarifications. Hopefully we can keep this all clear ;) -Dormando
