backlog

listen() backlog upper limits

谁说我不能喝 提交于 2020-06-08 06:28:04
问题 even though a lot was said on the topic, I am still stumped. I experiment with a monster linux server capable of handling proper load ramps, presumably many thousand connections a second. Now, if i check default listen() queue: #cat /proc/sys/net/core/somaxconn 128 which couldn't be actual queue size at all. I suspect it might be a legacy, and actual size is given by this: #cat /proc/sys/net/ipv4/tcp_max_syn_backlog 2048 However, man tcp says the latter is connections awaiting ACK from

What's “tcp-backlog” in redis.conf

喜夏-厌秋 提交于 2020-01-02 02:18:31
问题 I'm confused by tcp-backlog in redis.conf: # TCP listen() backlog. # # In high requests-per-second environments you need an high backlog in order # to avoid slow clients connections issues. Note that the Linux kernel # will silently truncate it to the value of /proc/sys/net/core/somaxconn so # make sure to raise both the value of somaxconn and tcp_max_syn_backlog # in order to get the desired effect. tcp-backlog 511 Is tcp-backlog the size of "complete connection queue" (three-way handshake

What value of backlog should I use?

微笑、不失礼 提交于 2020-01-01 04:42:05
问题 I read the man 2 listen. I don't understand what is the backlog value, it says The backlog argument defines the maximum length to which the queue of pending connections for sockfd may grow Right, how can I define what is the best value? Thanks 回答1: Basically, what the listen() backlog affects is how many incoming connections can queue up if your application isn't accept() ing connections as soon as they come in. It's not particularly important to most applications. The maximum value used by

Migrate backlog items from ScrumWise to Visual Studio Online?

|▌冷眼眸甩不掉的悲伤 提交于 2019-12-25 12:55:48
问题 Our project currently is using Scrumwise for our agile project planning and we want to migrate to either JIRA or Visual Studio Online. Is it possible to migrate backlog items ( xml/csv/excel format) into VSO? Does it require a plugin tool or utility? 回答1: Using Excel can help you add work items into a team project in VSO. install Microsoft Excel 2007 or a more recent version. install visual studio to get the Team Foundation add-in to Excel in Excel, start with a blank worksheet, find Team

VSTS - Backlog Priority altered by sorting in columns

这一生的挚爱 提交于 2019-12-24 16:11:18
问题 I am attached to a project using VSTS, with the Scrum process selected. As the Product Owner sorts the backlog, things work fine with respect to the Backlog Priority value under the hood. As tasks move along the Board, from column to column, I have noticed that the ordering of cards within a column will impact the Backlog Priority. This seems contrary to good sense. Is there a justification why a developer's move of a card within a column such as "In QA" would result in that item being ranked

Socket Backlog behaviour

浪子不回头ぞ 提交于 2019-12-23 02:52:38
问题 In case of a Serversocket have full of request in its backlog and doing a long running job what will be the socket behaviour. When I try this, from windows telnet is ok, it connects. But from unix it gets "connection refused" . My application is written in java and running on IBM jvm . By the way I came to that point where our application was not responding telnet from unix. Not respoing means it was writing "tyring..." and hangs, not refusing or connecting. Can anybody justify this behavior?

How does serversocket class serve multiple client connections on same port?

自古美人都是妖i 提交于 2019-12-18 19:06:52
问题 When using a Socket class one is establishing a TCP connection to a server on some port, but on the server the ServerSocket is capable of handling multiple client connections for each accept request and delegate it to a thread to server the request. But how is it possible for a ServerSocket class to accept multiple tcp connections on the same port. Does it mean that it is upto the OS to decide how many connections it allows or what is the maximum backlog allowed and can this be controlled by

How to install plugins on Redmine hosted on Heroku.com

痞子三分冷 提交于 2019-12-10 23:44:41
问题 Just pushed redmine to the heroku platform, though I can't get the backlog-plugin to work, it works just fine locally. I have pushed the local database to heroku aswwell. 回答1: Heroku's public directory is not writable. But a default Redmine assumes/requires so, as on start of the app server it copies static assets from the plugins (like images, javascripts, css) to the public/plugin_assets directory. On Heroku, this obviously fails. And as backlogs relies heavily on javascript, it's really