perl - TokyoCabinet Write speed too slow -


i have perl script (in ubuntu 12.04 lts) writing 26 tch files. keys equally distributed. writes become slow after 3 million inserts (equally distributed files) , speed comes down 240,000 inserts/min @ beginning 14,000 inserts/min after 3 mm inserts. individually shard files no more 150 mb , overall size comes around 2.7 gb.

i run optimize on every tch file after every 100k inserts file bnum 4*num_records_then , options set tlarge , make sure xmsiz matches size of bnum (as mentioned in why tokyo tyrant slow down exponentially after adjusting bnum?)

even after this, inserts start @ high speed decrease 14k inserts/min 240k inserts/min. due holding multiple tch connections (26) in single script? or there configuration setting, i'm missing (would disabling journaling help, above thread says journaling affects performance after tch file becomes bigger 3-4gb, shards <150mb files..)?

i turn off journaling , measure changes. cited thread talks 2-3 gb tch file, if sum sizes of 26 tch files, in same league. filesystem, total amount of data ranges written should relevant parameter.


Comments

Post a Comment

Popular posts from this blog

Why does Ruby on Rails generate add a blank line to the end of a file? -

running rails generate controller foo home results in: class foocontroller < application controller def home end end (there's nothing on line in actual file, blank line) is there purpose blank line? it's common use newline indicate end of line, last line. many editors (like vi, use) add in newline silently. consensus text files (especially in unix world) should end in newline, , there have been problems historically if wasn't present. why should text files end newline? the tool used count lines in file "wc" counts newlines in file, without trailing newline show 3 instead of 4. it improves readability of templates used in generator. consider: https://github.com/rails/rails/blob/master/railties/lib/rails/generators/rails/controller/templates/controller.rb to remove trailing newline, template have last line of: end<% end -%> instead of: end <% end -%> that seems less readable me. the discussion below refers
Read more

keyboard - Smiles and long press feature in Android -

i've created android keyboard. how add features inserting smilies, , using long keypresses display symbols? to create long-press behavior allows select several options pop-up menu, follow guide (specifically pop-up menu section): http://developer.android.com/guide/topics/ui/menus.html smileys (also known emoticons) combination of keys, understood programs , parsed same way. have do, when clicks smiley face on keyboard, simulate pressing of key combination matching emoticon. example, when clicks smiley, should simulate key presses ':' , ')' :). here's list of emoticons: http://en.wikipedia.org/wiki/list_of_emoticons
Read more

node.js - Bad Request - node js ajax post -

i'm using express 3.0 , node v0.11.0. have button submits form , i'm using ajax post data json object node server. client code is: $('#contact').submit(function(e) { console.log('submit called'); var formdata = json.stringify($('form').serializeobject()); console.log(formdata); $.ajax({ url: "http://localhost:3000/savedata/", type: "post", datatype: 'json', data: {objectdata: formdata}, contenttype: "application/json", complete: function() { console.log('process complete'); }, success: function(data) { console.log('process sucess'); }, error: function() { console.log('process error'); }, }); return false; }); then on server: var express = require('express'); var app = express(); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.bodyparser());
Read more