c++ - distcc issue: does it really speeds up compilation? -


i installed distcc , cmake small c++ project. have 2 machines: there 1 client compilation done locally, , 1 server, compilation done 'remotely'.

i have followed instructions install , configure distcc see no improvement when compile project, using these simple steps:

cxx="distcc g++" cmake my_project && make -j4

i have checked everything, on client , server machines, , saw no particular behavior. return codes 0 (ok) in logs , there no error messages. it's working no time gain. installed distccmon-gui tool , checked both machines used during compilation time.

finally, did try 4 machines , got same results, is, 0 improvement.

the thing looks weird, communication times:

compile_ok exit:0 sig:0 core:0 ret:0 time:151ms  compile_ok exit:0 sig:0 core:0 ret:0 time:156ms  compile_ok exit:0 sig:0 core:0 ret:0 time:182ms  compile_ok exit:0 sig:0 core:0 ret:0 time:201ms  compile_ok exit:0 sig:0 core:0 ret:0 time:163ms  compile_ok exit:0 sig:0 core:0 ret:0 time:202ms

even on localhost machine, latency 200ms each performed job.

in end, there little time overhead when use distcc, attribute communications between server , client.

has had such issue distcc , knows should look, or should investigate? i'm stuck on , believe distcc should bring me additional performance!

any ideas ? please :=)

thanks

how many cores have in total?

keep in mind running make -j4 use 4 cores in total: if there 4 cores on local machine , 4 on server, must use make -j8 or you'll have no improvement on compiling locally.


Comments

Post a Comment

Popular posts from this blog

apache - Remove .php and add trailing slash in url using htaccess not loading css -

i have add following code htaccess file removing .php extension , add trailing slash urls. worked fine reduced page loading speed , css code not loading @ all. pages ugly. please help rewriteengine on rewritebase / ## hide .php extension snippet # externally redirect /dir/foo.php /dir/foo rewritecond %{the_request} ^[a-z]{3,}\s([^.]+)\.php [nc] rewriterule ^ %1/ [r,l] # add trailing slash rewritecond %{request_filename} !-f rewritecond %{request_uri} !/$ rewriterule . %{request_uri}/ [l,r=301] # internally forward /dir/foo /dir/foo.php rewritecond %{request_filename} !-d rewritecond %{request_filename}.php -f rewriterule ^(.*?)/?$ $1.php [l] we can rewrite urls using .htaccess files. before writing in .htaccess files need verify kind of server using. can check server adding a <?php phpinfo(); ?> in php page. ensure mod_rewrite module enabled in apache server. can identified checking phpinfo included page. common methods used url rewriting follows ...
Read more

javascript - jQuery show full size image on click -

pretty self explanatory not workking . i want display full image when user click on image... yes know there tons of plugins but i want keep simple. any idea ? css : .full { display: none; width: 500px; height: 500px; margin-left: 100px; margin-top: -300px; position: fixed; background-color: #f00; z-index: 6; } .thumbnail { width: 50px; height: 50px; } html: <img class="thumbnail" src="http://4.bp.blogspot.com/-uhbdp2esxng/txneptvi92i/aaaaaaaaaky/upfqis7zto0/s1600/rihanna-wallpaper.jpg"> jquery: $(document).ready(function() { $('.thumbnail').on('click', function() { var img = $('<img />',{src:this.src,'class':'full'}); $('.full').html(img).show(); console.log('done!'); }); }); try looking how jquery works. $(document).ready(function() { $('.thumbnail').on('click', function(...
Read more