Hi All, We've been testing a write-heavy scenario (hence the get/set discrepancy) using the Jellycan build of 1.2.6 on Windows Server 2003. There's a staging server throwing live data at the memcached server (items are roughly 2-300 bytes apiece), and are seeing the number of curr_items stagnate at exactly 22539, at which point everything else is evicted.
First `stats` (abbreviated output): STAT version 1.2.6 STAT pointer_size 32 STAT curr_items 22539 STAT total_items 5238076 STAT bytes 14729824 STAT curr_connections 26 STAT total_connections 110 STAT connection_structures 30 STAT cmd_get 63 STAT cmd_set 5238076 STAT get_hits 22 STAT get_misses 41 STAT evictions 5121775 STAT bytes_read 2157723502 STAT bytes_written 44197122 STAT limit_maxbytes 536870912 A few seconds later: STAT version 1.2.6 STAT pointer_size 32 STAT curr_items 22539 STAT total_items 5238076 STAT bytes 14729824 STAT connection_structures 30 STAT cmd_get 63 STAT cmd_set 5238076 STAT get_hits 22 STAT get_misses 41 STAT evictions 5121775 STAT bytes_read 2157723518 STAT bytes_written 44198050 STAT limit_maxbytes 536870912 The result of `stats slabs` shows that there's only one slab that still has free chunks (out of 20), but even if there were no chunks available period, it should be able to allocate more than 20 slabs, as according to bytes_used, we're only using 14MB, and the limit is set to 512MB. My first thought would be that the homogeneity of the data sizes is throwing off chunk allocation and lots of memory is being wasted..but that wouldn't explain why only 14MB is being used. Any thoughts? Thanks! - Marc `stats slabs` output: stats slabs STAT 3:chunk_size 144 STAT 3:chunks_per_page 7281 STAT 3:total_pages 1 STAT 3:total_chunks 7281 STAT 3:used_chunks 7281 STAT 3:free_chunks 0 STAT 3:free_chunks_end 6793 STAT 4:chunk_size 184 STAT 4:chunks_per_page 5698 STAT 4:total_pages 1 STAT 4:total_chunks 5698 STAT 4:used_chunks 5698 STAT 4:free_chunks 0 STAT 4:free_chunks_end 5285 STAT 5:chunk_size 232 STAT 5:chunks_per_page 4519 STAT 5:total_pages 1 STAT 5:total_chunks 4519 STAT 5:used_chunks 4519 STAT 5:free_chunks 0 STAT 5:free_chunks_end 3869 STAT 6:chunk_size 296 STAT 6:chunks_per_page 3542 STAT 6:total_pages 1 STAT 6:total_chunks 3542 STAT 6:used_chunks 3542 STAT 6:free_chunks 0 STAT 6:free_chunks_end 2821 STAT 7:chunk_size 376 STAT 7:chunks_per_page 2788 STAT 7:total_pages 1 STAT 7:total_chunks 2788 STAT 7:used_chunks 2788 STAT 7:free_chunks 0 STAT 7:free_chunks_end 2236 STAT 8:chunk_size 472 STAT 8:chunks_per_page 2221 STAT 8:total_pages 1 STAT 8:total_chunks 2221 STAT 8:used_chunks 2221 STAT 8:free_chunks 0 STAT 8:free_chunks_end 1880 STAT 9:chunk_size 592 STAT 9:chunks_per_page 1771 STAT 9:total_pages 1 STAT 9:total_chunks 1771 STAT 9:used_chunks 1771 STAT 9:free_chunks 0 STAT 9:free_chunks_end 1504 STAT 10:chunk_size 744 STAT 10:chunks_per_page 1409 STAT 10:total_pages 13 STAT 10:total_chunks 18317 STAT 10:used_chunks 18317 STAT 10:free_chunks 0 STAT 10:free_chunks_end 0 STAT 11:chunk_size 936 STAT 11:chunks_per_page 1120 STAT 11:total_pages 1 STAT 11:total_chunks 1120 STAT 11:used_chunks 1120 STAT 11:free_chunks 0 STAT 11:free_chunks_end 927 STAT 12:chunk_size 1176 STAT 12:chunks_per_page 891 STAT 12:total_pages 1 STAT 12:total_chunks 891 STAT 12:used_chunks 891 STAT 12:free_chunks 0 STAT 12:free_chunks_end 717 STAT 13:chunk_size 1472 STAT 13:chunks_per_page 712 STAT 13:total_pages 1 STAT 13:total_chunks 712 STAT 13:used_chunks 712 STAT 13:free_chunks 0 STAT 13:free_chunks_end 601 STAT 14:chunk_size 1840 STAT 14:chunks_per_page 569 STAT 14:total_pages 1 STAT 14:total_chunks 569 STAT 14:used_chunks 569 STAT 14:free_chunks 0 STAT 14:free_chunks_end 519 STAT 15:chunk_size 2304 STAT 15:chunks_per_page 455 STAT 15:total_pages 1 STAT 15:total_chunks 455 STAT 15:used_chunks 455 STAT 15:free_chunks 0 STAT 15:free_chunks_end 422 STAT 16:chunk_size 2880 STAT 16:chunks_per_page 364 STAT 16:total_pages 1 STAT 16:total_chunks 364 STAT 16:used_chunks 364 STAT 16:free_chunks 0 STAT 16:free_chunks_end 343 STAT 17:chunk_size 3600 STAT 17:chunks_per_page 291 STAT 17:total_pages 1 STAT 17:total_chunks 291 STAT 17:used_chunks 291 STAT 17:free_chunks 0 STAT 17:free_chunks_end 285 STAT 18:chunk_size 4504 STAT 18:chunks_per_page 232 STAT 18:total_pages 1 STAT 18:total_chunks 232 STAT 18:used_chunks 232 STAT 18:free_chunks 0 STAT 18:free_chunks_end 223 STAT 19:chunk_size 5632 STAT 19:chunks_per_page 186 STAT 19:total_pages 1 STAT 19:total_chunks 186 STAT 19:used_chunks 186 STAT 19:free_chunks 0 STAT 19:free_chunks_end 0 STAT 20:chunk_size 7040 STAT 20:chunks_per_page 148 STAT 20:total_pages 239 STAT 20:total_chunks 35372 STAT 20:used_chunks 7 STAT 20:free_chunks 35365 STAT 20:free_chunks_end 7 STAT 21:chunk_size 8800 STAT 21:chunks_per_page 119 STAT 21:total_pages 253 STAT 21:total_chunks 30107 STAT 21:used_chunks 97 STAT 21:free_chunks 30010 STAT 21:free_chunks_end 95 STAT 22:chunk_size 11000 STAT 22:chunks_per_page 95 STAT 22:total_pages 1 STAT 22:total_chunks 95 STAT 22:used_chunks 95 STAT 22:free_chunks 0 STAT 22:free_chunks_end 93 STAT active_slabs 20 STAT total_malloced 545399976 END
