How many POSIX shared memory blocks/handles is feasible on Linux? -

-

i want split shared memory in reasonable pieces, have no idea, number good? 100 shared memory handles 1 application reasonable number?

p.s: have produces/consumer problem. producer writes data in shared memory, 1 or many consumers read data time-shifted. producer , consumers should never access same data-block. consumers may try access , modify same memory-blocks. consumer access should managed semaphores.

the single data-block ca. 30kb , entire shared memory 1gb. using ca 100 pieces sure prevent locking producer/consumer , minimize number of locks required among consumers.


Comments

Post a Comment

Popular posts from this blog

Ansible - ERROR! the field 'hosts' is required but was not set -

-
i've error when launch playbook don't found why.... error! field 'hosts' required not set there main.yml : --- - hosts: hosts - vars: - elasticsearch_java_home: /usr/lib/jmv/jre-1.7.0 - elasticsearch_http_port: 8443 - tasks: - include: tasks/main.yml - handlers: - include: handlers/main.yml and /etc/ansible/hosts : [hosts] 10.23.108.182 10.23.108.183 10.23.108.184 10.23.108.185 when test ping, : [root@poste08-08-00 elasticsearch]# ansible hosts -m ping 10.23.108.183 | success => { "changed": false, "ping": "pong" } 10.23.108.182 | success => { "changed": false, "ping": "pong" } 10.23.108.185 | success => { "changed": false, "ping": "pong" } 10.23.108.184 | success => { "changed": false, "ping": "pong" } please, me :) regards, you have syntax error in playbook.
Read more

customize file_field button ruby on rails -

-
i'm trying rid of ugly button rails has default file upload. want add glyphicon <%= f.file_field :image_url, class:"glyphicon glyphicon-camera" %> this didn't work , have tried other things in different post saw on page, don't attach file. as suggested here bootstrap filestyle , can use bootstrap's filestyle style file upload buttons. step-1: add layout application.html.erb i have added bootstrap filestyle library cdn. should make sure have both jquery , boostrap loaded. <script type="text/javascript" src="https://cdn.jsdelivr.net/bootstrap.filestyle/1.1.0/js/bootstrap-filestyle.min.js"> </script> step-2: add corresponding js file: $(":file").filestyle({input: false}); step-3: image_url file field follows: <%= f.file_field :image_url,class: "filestyle", "data-input" => false %>
Read more

SoapUI on windows 10 - high DPI/4K scaling issue -

-
Image
soapui doesn't seem dpi-aware , displays small on high dpi screen (tiny text , buttons). other applications running fine (screen resolution 3840 x 2160). version : soapui 5.1.2 os : windows 10 i have tried: configure soapui run "disable display scaling on high dpi settings" - parts of soapui looking bigger , don't display (image) changing resolution changing font size (preferences > editor settings > select font...) therefore assume, soapui pretends dpi-aware, not scale itself. have same issue? this workaround until developers round making version dpi-aware. step 1: add registry key hkey_local_machine\software\microsoft\windows\currentversion\sidebyside\preferexternalmanifest (dword) 1 step 2: add manifest file 'soapui-5.2.1.exe.manifest' in same directory 'soapui-5.2.1.exe' content of manifest file: <?xml version="1.0" encoding="utf-8" standalone="yes"?> <assembly xml
Read more