Search Results

Search found 8997 results on 360 pages for 'apt cache'.

Page 26/360 | < Previous Page | 22 23 24 25 26 27 28 29 30 31 32 33  | Next Page >

• How to cache on CloudFlare images that are served to client as JSON?

  - by Askar Ibragimov

  I am using a gallery on my website that gets list of images from a JSON sent by a php script. So, the javascript gallery calls PHP backend and it replies with complex JSON where images are specified as object fields. These fields not necessarily include full URLs, merely a path to needed images. I'd like to use Cloudflare and want these images to be cached there. How I could learn whether these are cached or not, and make sure that these would be cached and not considered some sort of dynamic content?

  Read the article

• httpd high cpu usage slowing down server response

  - by max

  my client has a image sharing website with about 100.000 visitor per day it has been slowed down considerably since this morning when i checked processes i've notice high cpu usage from http .... some has suggested ddos attack ... i'm not a webmaster and i've no idea whts going on top top - 20:13:30 up 5:04, 4 users, load average: 4.56, 4.69, 4.59 Tasks: 284 total, 3 running, 281 sleeping, 0 stopped, 0 zombie Cpu(s): 12.1%us, 0.9%sy, 1.7%ni, 69.0%id, 16.4%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 16037152k total, 15875096k used, 162056k free, 360468k buffers Swap: 4194288k total, 888k used, 4193400k free, 14050008k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4151 apache 20 0 277m 84m 3784 R 50.2 0.5 0:01.98 httpd 4115 apache 20 0 210m 16m 4480 S 18.3 0.1 0:00.60 httpd 12885 root 39 19 4296 692 308 S 13.0 0.0 11:09.53 gzip 4177 apache 20 0 214m 20m 3700 R 12.3 0.1 0:00.37 httpd 2219 mysql 20 0 4257m 198m 5668 S 11.0 1.3 42:49.70 mysqld 3691 apache 20 0 206m 14m 6416 S 1.7 0.1 0:03.38 httpd 3934 apache 20 0 211m 17m 4836 S 1.0 0.1 0:03.61 httpd 4098 apache 20 0 209m 17m 3912 S 1.0 0.1 0:04.17 httpd 4116 apache 20 0 211m 17m 4476 S 1.0 0.1 0:00.43 httpd 3867 apache 20 0 217m 23m 4672 S 0.7 0.1 1:03.87 httpd 4146 apache 20 0 209m 15m 3628 S 0.7 0.1 0:00.02 httpd 4149 apache 20 0 209m 15m 3616 S 0.7 0.1 0:00.02 httpd 12884 root 39 19 22336 2356 944 D 0.7 0.0 0:19.21 tar 4054 apache 20 0 206m 12m 4576 S 0.3 0.1 0:00.32 httpd another top top - 15:46:45 up 5:08, 4 users, load average: 5.02, 4.81, 4.64 Tasks: 288 total, 6 running, 281 sleeping, 0 stopped, 1 zombie Cpu(s): 18.4%us, 0.9%sy, 2.3%ni, 56.5%id, 21.8%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 16037152k total, 15792196k used, 244956k free, 360924k buffers Swap: 4194288k total, 888k used, 4193400k free, 13983368k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4622 apache 20 0 209m 16m 3868 S 54.2 0.1 0:03.99 httpd 4514 apache 20 0 213m 20m 3924 R 50.8 0.1 0:04.93 httpd 4627 apache 20 0 221m 27m 4560 R 18.9 0.2 0:01.20 httpd 12885 root 39 19 4296 692 308 S 18.9 0.0 11:51.79 gzip 2219 mysql 20 0 4257m 199m 5668 S 18.3 1.3 43:19.04 mysqld 4512 apache 20 0 227m 33m 4736 R 5.6 0.2 0:01.93 httpd 4520 apache 20 0 213m 19m 4640 S 1.3 0.1 0:01.48 httpd 4590 apache 20 0 212m 19m 3932 S 1.3 0.1 0:00.06 httpd 4573 apache 20 0 210m 16m 3556 R 1.0 0.1 0:00.03 httpd 4562 root 20 0 15164 1388 952 R 0.7 0.0 0:00.08 top 98 root 20 0 0 0 0 S 0.3 0.0 0:04.89 kswapd0 100 root 39 19 0 0 0 S 0.3 0.0 0:02.85 khugepaged 4579 apache 20 0 209m 16m 3900 S 0.3 0.1 0:00.83 httpd 4637 apache 20 0 209m 15m 3668 S 0.3 0.1 0:00.03 httpd ps aux [root@server ~]# ps aux | grep httpd root 2236 0.0 0.0 207524 10124 ? Ss 15:09 0:03 /usr/sbin/http d -k start -DSSL apache 3087 2.7 0.1 226968 28232 ? S 20:04 0:06 /usr/sbin/http d -k start -DSSL apache 3170 2.6 0.1 221296 22292 ? R 20:05 0:05 /usr/sbin/http d -k start -DSSL apache 3171 9.0 0.1 225044 26768 ? R 20:05 0:17 /usr/sbin/http d -k start -DSSL apache 3188 1.5 0.1 223644 24724 ? S 20:05 0:03 /usr/sbin/http d -k start -DSSL apache 3197 2.3 0.1 215908 17520 ? S 20:05 0:04 /usr/sbin/http d -k start -DSSL apache 3198 1.1 0.0 211700 13000 ? S 20:05 0:02 /usr/sbin/http d -k start -DSSL apache 3272 2.4 0.1 219960 21540 ? S 20:06 0:03 /usr/sbin/http d -k start -DSSL apache 3273 2.0 0.0 211600 12804 ? S 20:06 0:03 /usr/sbin/http d -k start -DSSL apache 3279 3.7 0.1 229024 29900 ? S 20:06 0:05 /usr/sbin/http d -k start -DSSL apache 3280 1.2 0.0 0 0 ? Z 20:06 0:01 [httpd] <defun ct> apache 3285 2.9 0.1 218532 21604 ? S 20:06 0:04 /usr/sbin/http d -k start -DSSL apache 3287 30.5 0.4 265084 65948 ? R 20:06 0:43 /usr/sbin/http d -k start -DSSL apache 3297 1.9 0.1 216068 17332 ? S 20:06 0:02 /usr/sbin/http d -k start -DSSL apache 3342 2.7 0.1 216716 17828 ? S 20:06 0:03 /usr/sbin/http d -k start -DSSL apache 3356 1.6 0.1 217244 18296 ? S 20:07 0:01 /usr/sbin/http d -k start -DSSL apache 3365 6.4 0.1 226044 27428 ? S 20:07 0:06 /usr/sbin/http d -k start -DSSL apache 3396 0.0 0.1 213844 16120 ? S 20:07 0:00 /usr/sbin/http d -k start -DSSL apache 3399 5.8 0.1 215664 16772 ? S 20:07 0:05 /usr/sbin/http d -k start -DSSL apache 3422 0.7 0.1 214860 17380 ? S 20:07 0:00 /usr/sbin/http d -k start -DSSL apache 3435 3.3 0.1 216220 17460 ? S 20:07 0:02 /usr/sbin/http d -k start -DSSL apache 3463 0.1 0.0 212732 15076 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3492 0.0 0.0 207660 7552 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3493 1.4 0.1 218092 19188 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3500 1.9 0.1 224204 26100 ? R 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3501 1.7 0.1 216916 17916 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3502 0.0 0.0 207796 7732 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3505 0.0 0.0 207660 7548 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3529 0.0 0.0 207660 7524 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3531 4.0 0.1 216180 17280 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3532 0.0 0.0 207656 7464 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3543 1.4 0.1 217088 18648 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3544 0.0 0.0 207656 7548 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3545 0.0 0.0 207656 7560 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3546 0.0 0.0 207660 7540 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3547 0.0 0.0 207660 7544 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3548 2.3 0.1 216904 17888 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3550 0.0 0.0 207660 7540 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3551 0.0 0.0 207660 7536 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3552 0.2 0.0 214104 15972 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3553 6.5 0.1 216740 17712 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3554 6.3 0.1 216156 17260 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3555 0.0 0.0 207796 7716 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3556 1.8 0.0 211588 12580 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3557 0.0 0.0 207660 7544 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3565 0.0 0.0 207660 7520 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3570 0.0 0.0 207660 7516 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL apache 3571 0.0 0.0 207660 7504 ? S 20:08 0:00 /usr/sbin/http d -k start -DSSL root 3577 0.0 0.0 103316 860 pts/2 S+ 20:08 0:00 grep httpd httpd error log [Mon Jul 01 18:53:38 2013] [error] [client 2.178.12.67] request failed: error reading the headers, referer: http://akstube.com/image/show/27023/%D9%86%DB%8C%D9%88%D8%B4%D8%A7-%D8%B6%DB%8C%D8%BA%D9%85%DB%8C-%D9%88-%D8%AE%D9%88%D8%A7%D9%87%D8%B1-%D9%88-%D9%87%D9%85%D8%B3%D8%B1%D8%B4 [Mon Jul 01 18:55:33 2013] [error] [client 91.229.215.240] request failed: error reading the headers, referer: http://akstube.com/image/show/44924 [Mon Jul 01 18:57:02 2013] [error] [client 2.178.12.67] Invalid method in request [Mon Jul 01 18:57:02 2013] [error] [client 2.178.12.67] File does not exist: /var/www/html/501.shtml [Mon Jul 01 19:21:36 2013] [error] [client 127.0.0.1] client denied by server configuration: /var/www/html/server-status [Mon Jul 01 19:21:36 2013] [error] [client 127.0.0.1] File does not exist: /var/www/html/403.shtml [Mon Jul 01 19:23:57 2013] [error] [client 151.242.14.31] request failed: error reading the headers [Mon Jul 01 19:37:16 2013] [error] [client 2.190.16.65] request failed: error reading the headers [Mon Jul 01 19:56:00 2013] [error] [client 151.242.14.31] request failed: error reading the headers Not a JPEG file: starts with 0x89 0x50 also there is lots of these in the messages log Jul 1 20:15:47 server named[2426]: client 203.88.6.9#11926: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 20:15:47 server named[2426]: client 203.88.6.9#26255: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 20:15:48 server named[2426]: client 203.88.6.9#20093: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 20:15:48 server named[2426]: client 203.88.6.9#8672: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:07 server named[2426]: client 203.88.6.9#39352: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:08 server named[2426]: client 203.88.6.9#25382: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:08 server named[2426]: client 203.88.6.9#9064: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:09 server named[2426]: client 203.88.23.9#35375: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:09 server named[2426]: client 203.88.6.9#61932: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:09 server named[2426]: client 203.88.23.9#4423: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:09 server named[2426]: client 203.88.6.9#40229: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.9#46128: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.6.10#62128: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.9#35240: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.6.10#36774: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.9#28361: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.6.10#14970: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.9#20216: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.10#31794: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.9#23042: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.6.10#11333: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.10#41807: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.23.9#20092: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:14 server named[2426]: client 203.88.6.10#43526: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:15 server named[2426]: client 203.88.23.9#17173: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:15 server named[2426]: client 203.88.23.9#62412: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:15 server named[2426]: client 203.88.23.10#63961: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:15 server named[2426]: client 203.88.23.10#64345: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:15 server named[2426]: client 203.88.23.10#31030: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:45:16 server named[2426]: client 203.88.6.9#17098: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:16 server named[2426]: client 203.88.6.9#17197: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:16 server named[2426]: client 203.88.6.9#18114: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:16 server named[2426]: client 203.88.6.9#59138: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:45:17 server named[2426]: client 203.88.6.9#28715: query (cache) 'www.xxxmaza.com/A/IN' denied Jul 1 15:48:33 server named[2426]: client 203.88.23.9#26355: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:34 server named[2426]: client 203.88.23.9#34473: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:34 server named[2426]: client 203.88.23.9#62658: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:34 server named[2426]: client 203.88.23.9#51631: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:35 server named[2426]: client 203.88.23.9#54701: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:36 server named[2426]: client 203.88.6.10#63694: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:36 server named[2426]: client 203.88.6.10#18203: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:37 server named[2426]: client 203.88.6.10#9029: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:38 server named[2426]: client 203.88.6.10#58981: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:48:38 server named[2426]: client 203.88.6.10#29321: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:49:47 server named[2426]: client 119.160.127.42#42355: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:49:49 server named[2426]: client 119.160.120.42#46285: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:49:53 server named[2426]: client 119.160.120.42#30696: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:49:54 server named[2426]: client 119.160.127.42#14038: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:49:55 server named[2426]: client 119.160.120.42#33586: query (cache) 'xxxmaza.com/A/IN' denied Jul 1 15:49:56 server named[2426]: client 119.160.127.42#55114: query (cache) 'xxxmaza.com/A/IN' denied

  Read the article

• HTML5 cache manifest: whitelisting ALL remote resources?

  - by Alex Ford

  I'm doing an iPhone version of a desktop site that includes a blog. The blog often embeds images from other domains (the image URLs always start with http:// in this case, obviously), but because I'm using cache-manifest, these images don't load because they aren't declared in the manifest file. I have a NETWORK: whitelist section that has all of my AJAX request files, etc. I've even whitelisted the flickr farm domains because a lot of the images we add to the blog come from our flickr page. The flickr images show up just fine, but any other "random" image hotlinks from another domain show broken. I tried adding a line like this: http:// to the NETWORK: section, but it doesn't seem to like http:// as a whitelist. Does anyone have any thoughts on this? Thanks! Alex

  Read the article

• How to server-side cache ASP.NET custom HttpHandler response

  - by Joel

  I've got a custom HttpHandler in my ASP.NET application, that basically builds and returns a javascript object. I have no experience with server-side caching, and my (possibly incompetent) google searches aren't returning anything basic enough to get me started. Could anyone provide a very simple example to give me an idea of how to access and use the server-side cache from a custom HttpHandler, or, leave some links to get me started? Thanks a lot. Additional info: I'm on IIS 6, and my code-behind is in C# (although a VB example would work as well).

  Read the article

• Configure OutputCache for ASCX from web.config's cache profiles

  - by zar

  Hello, To configure aspx pages' OutputCache from one place, there is a great tool which is the CacheProfile attribute in <%@ OutputCache % associated with a custom cache profile defined in the web.config : <caching> <outputCacheSettings> <outputCacheProfiles> <add name="myProfile" duration="300" /> </outputCacheProfiles> </outputCacheSettings> </caching> And the line : <%@ OutputCache CacheProfile="myProfile" VaryByParam="None" %> does the job. But how to do the same thing for ascx user controls ? CacheProfile isn't in <%@ OutputCache % :S Is there a workaround ? Thanks.

  Read the article

• Is this a cache problem? (JQUERY)

  - by Scarface

  Hey guys quick question. I have this code that brings in data from a php script and it works fine some of the time. However, once in a while the information will not appear at all in opera if I keep refreshing. About Is every 3 refreshes. It seems to be fine in firefox. Is this a cache problem and can it be fixed? Thanks in advance for any assistance. $.getJSON(files+"comments.php?action=view&load=initial&topic_id="+topic_id+"&t=" + (new Date()), function(json) { if(json.length) { for(i=0; i < json.length; i++) { $('#comment-list').prepend(prepare(json[i])); $('#list-' + count).fadeIn(1500); } } });

  Read the article

• MySQL query cache vs caching result-sets in the application layer

  - by GetFree

  I'm running a php/mysql-driven website with a lot of visits and I'm considering the possibility of caching result-sets in shared memory in order to reduce database load. However, right now MySQL's query cache is enabled and it seems to be doing a pretty good job since if I disable query caching, the use of CPU jumps to 100% immediately. Given that situation, I dont know if caching result-sets (or even the generated HTML code) locally in shared memory with PHP will result in any noticeable performace improvement. Does anyone out there have any experience on this matter? PS: Please avoid suggesting heavy-artillery solutions like memcached. Right now I'm looking for simple solutions that dont require too much time to implement, deploy and maintain.

  Read the article

• php cache zend framework

  - by msaif

  server side is PHP + zend framework. problem: i have huge of data appox 5000 records and no of columns are 5 in input.txt file. i like to read all data into memory only once and send some data to the every browser request. but if i update that input.txt file then updated data must be auto synchronized to that memory location. so i need to solve that problem by using memory caching technique.but caching technique has expire time.but if input.txt is updated before cache expire then i need to auto synchronize to that memory location. now i am using zend framework 1.10.is it possible in zend framework. can anybody give me some line of code of zendfrmawork i have no option to use memchached server(distributed). Only zend framwork.

  Read the article

• Cache for large read only database recommendation

  - by paddydub

  I am building site on with Spring, Hibernate and Mysql. The mysql database contains information on coordinates and locations etc, it is never updated only queried. The database contains 15000 rows of coordinates and 48000 rows of coordinate connections. Every time a request is processed, the application needs to read all these coordinates which is taking approx 3-4 seconds. I would like to set up a cache, to allow quick access to the data. I'm researching memcached at the moment, can you please advise if this would be my best option?

  Read the article

• Combining Session and Cache

  - by Zyphrax

  To make my extranet web application even faster/more scalable I think of using some of the caching mechanisms. For some of the pages we'll use HTML caching, please ignore that technique for this question. E.g.: at some point in time 2500 managers will simultaneously login on our application (most of them with the same Account/Project) I think of storing an Account-cachekey and Project-cachekey into the user's Session and use that to get the item from the Cache. I could have simply stored the Account into the session, but that would result in 2500 of the same Accounts in memory. Is there a better solution to this or does it make sense :)?

  Read the article

• Disable page cache on a specific page

  - by David Brunelle

  Hi, Not sure if I really am on the right forum, but if not, just tell me. I have a page that is coded in ASP (not .net) which is used to send email. We are currently having a problem in which the page seem to be sent twice sometime. Upon checking, we found out that those who have this problem are coming from big organisation, so it was suggested that their server might cache the file for some reason. I would like to know, is there a way in HTML (or ASP ) to prevent that from happening ? Or is it in IIS that we must set this up ? Thanks,

  Read the article

• Are there Adaptive Replacement Cache patent-free alternatives?

  - by aleccolocco

  An open source high-performance project I'm working on needs to keep a cache of parsed/compiled files. A plain LRU or a plain LFU wouldn't fit. Plain LRU wouldn't work as there will be remote batch/spider processes hitting the service regularly. Plain LFU wouldn't work because content will age. ARC seems like the perfect solution but since IBM holds patents to it at least one open source project dropped it. Are there any (good enough) alternatives? EDIT: I'm not looking for exactly the same thing, just something that could handle those two situations. Perhaps some simple strategy with timestamps and sources. There have to be many programmers who faced this situation before. That's why the "good enough" bit.

  Read the article

• Cache bandwidth per tick for modern CPUs

  - by osgx

  Hello What is a speed of cache accessing for modern CPUs? How many bytes can be read or written from memory every processor clock tick by Intel P4, Core2, Corei7, AMD? Please, answer with both theoretical (width of ld/sd unit with its throughput in uOPs/tick) and practical numbers (even memcpy speed tests, or STREAM benchmark), if any. PS it is question, related to maximal rate of load/store instructions in assembler. There can be theoretical rate of loading (all Instructions Per Tick are widest loads), but processor can give only part of such, a practical limit of loading.

  Read the article

• Create a PHP cache system in MySQL database?

  - by Zach Smith

  I'm creating a web service that often scrapes data from remote web pages. After scraping this data, I have a simple multidimensional array of information to use. The scraping process is fairly taxing on my server, and the page load takes a while. I was considering adding a simple cache system using a MySQL database, where I create one row per remote web page with a the array of information pulled from it stored as a JSON encoded string. Is this a good enough system? Or would something like a text file per web page be a better idea?

  Read the article

• Is it possible to search an apt repository via a web browser?

  - by Bryan

  I've installed the beta version of Ubuntu 10.04 server edition (x64), but the system doesn't have an internet connection. Is there a way I can find out what packages are in the apt repository with nothing more than a web browser? The reason I'm asking, is because I will have an internet connection available when the production system goes live, but it simply isn't possible to internet connect my development system.

  Read the article

• Ubuntu, is adding the debian repository to my apt source.list dangerous?

  - by TheDeeno

  I'm trying to install a package from a debian repository. Trying to install manually with dpkg errors because of missing or incomplete dependencies. This got me wondering, is it a mistake to just add the debian repo to my apt sources? Thanks

  Read the article

• How do I read the cache of Chrome and Firefox programmatically on the Mac?

  - by John Gallagher

  Background I want to access the cache of Chrome and Firefox in my Cocoa application. I need to get the HTML for pages accessed recently. Safari is a piece of cake - all this information is available in SQLite data stores, but not so in Chrome and Firefox. The Problem For Firefox, the cache is in /Library/Caches/Firefox/Profiles/xxx.default/Cache with filenames _CACHE_001_ _CACHE_002_ _CACHE_003_ and _CACHE_MAP_ For Chrome, the cache is in /Library/Caches/Google/Chrome/Default/Cache with filenames data_0 data_1 data_2 and data_3 What I've tried The only article I can find that sheds any light on what format these caches are in is here. It recommends a Cache Viewer tool, but doesn't explain how one might do this programmatically. Questions Is there any way of reconstructing this data using command line tools or the Cocoa framework? Or is it much too low level? Is there another way of getting at the HTML of recent web pages that I don't know about?

  Read the article

• Tomcat6 Manager Webapp is 404 on apt-get install on Ubuntu 10.10

  - by Noel

  http://localhost:8080/manager/html gives a 404 error on apt-get install of tomcat6 (6.0.28 on JVM 1.6.0_20-b20 on 2.6.35-27-generic amd64). http://localhost:8080/host-manager/html works. Lists one Host name, localhost. Installed tomcat6-admin with apt-get. $ ls dpkg -l | grep -i tomcat6-admin ii tomcat6-admin 6.0.28-2ubuntu1.1 Servlet and JSP engine -- admin web applications $ cat /usr/share/tomcat6/conf/tomcat-users.xml <tomcat-users> <role rolename="admin"/> <role rolename="manager" /> <user username="tomcatuser" password="Password1" roles="admin,manager"/> </tomcat-users> $ cat /usr/share/tomcat6/conf/Catalina/localhost/manager.xml <Context path="/manager" docBase="/usr/share/tomcat6-admin/manager" antiResourceLocking="false" privileged="true" /> <role name="manager" /> <user name="manager" password="Password1" roles="manager" /> <user name="tomcatuser" password="Password1" roles="manager" /> Those two files are the only documentation I've seen on how to setup the Manager webapp, and they seem to be compliant with the requirements.

  Read the article

• sudo apt-get update does not work for 12.10

  - by Brian Hawi

  hey i recently installed ubuntu 12.10 but the software center does not work i tried the sudo apt-get update because that worked when i was using ubuntu 11.04.... these are the errors hawi@hawi-HP-G62-Notebook-PC:~$ sudo apt-get update [sudo] password for hawi: Err http:ke.archive.ubuntu.com quantal InRelease Err http:ke.archive.ubuntu.com quantal-updates InRelease Err http:ke.archive.ubuntu.com quantal-backports InRelease Err http:ke.archive.ubuntu.com quantal Release.gpg Unable to connect to ke.archive.ubuntu.com:http: Err http:ke.archive.ubuntu.com quantal-updates Release.gpg Unable to connect to ke.archive.ubuntu.com:http: Err http:ke.archive.ubuntu.com quantal-backports Release.gpg Unable to connect to ke.archive.ubuntu.com:http: Err http:security.ubuntu.com quantal-security InRelease Err http:security.ubuntu.com quantal-security Release.gpg Unable to connect to security.ubuntu.com:http: [IP: 91.189.92.190 80] Err http:extras.ubuntu.com quantal InRelease Err http:extras.ubuntu.com quantal Release.gpg Unable to connect to extras.ubuntu.com:http: Reading package lists... Done W: Failed to fetch http:ke.archive.ubuntu.com/ubuntu/dists/quantal/InRelease W: Failed to fetch http:ke.archive.ubuntu.com/ubuntu/dists/quantal-updates/InRelease W: Failed to fetch http:ke.archive.ubuntu.com/ubuntu/dists/quantal-backports/InRelease W: Failed to fetch http:security.ubuntu.com/ubuntu/dists/quantal-security/InRelease W: Failed to fetch http:extras.ubuntu.com/ubuntu/dists/quantal/InRelease W: Failed to fetch http:ke.archive.ubuntu.com/ubuntu/dists/quantal/Release.gpg Unable to connect to ke.archive.ubuntu.com:http: W: Failed to fetch http:ke.archive.ubuntu.com/ubuntu/dists/quantal-updates/Release.gpg Unable to connect to ke.archive.ubuntu.com:http: W: Failed to fetch http:ke.archive.ubuntu.com/ubuntu/dists/quantal-backports/Release.gpg Unable to connect to ke.archive.ubuntu.com:http: W: Failed to fetch http:security.ubuntu.com/ubuntu/dists/quantal-security/Release.gpg Unable to connect to security.ubuntu.com:http: [IP: 91.189.92.190 80] W: Failed to fetch http:extras.ubuntu.com/ubuntu/dists/quantal/Release.gpg Unable to connect to extras.ubuntu.com:http: W: Some index files failed to download. They have been ignored, or old ones used instead. (note i have removed the // after http because the site does not allow me to post more than two links) what could be the issue?

  Read the article

• How to install suggested packages in apt-get

  - by Alaa Ali

  EDIT: I solved my issue. I will answer my own question, but in 5 hours because I don't have permission now. I know the question has been asked before, but please hear me out. So I wanted to install screenlets. I ran sudo apt-get install screenlets, and this is what I got: The following extra packages will be installed: libart-2.0-2 libbonobo2-0 libbonobo2-common libbonoboui2-0 libbonoboui2-common libgnome2-0 libgnomecanvas2-0 libgnomecanvas2-common libgnomeui-0 libgnomeui-common libtidy-0.99-0 python-beautifulsoup python-evolution python-feedparser python-gmenu python-gnome2 python-numpy python-pyorbit python-rsvg python-tz python-utidylib screenlets-pack-basic Suggested packages: libbonobo2-bin python-gnome2-doc python-numpy-doc python-numpy-dbg python-nose python-dev gfortran python-pyorbit-dbg screenlets-pack-all python-dcop Recommended packages: python-numeric python-gnome2-extras The following NEW packages will be installed: libart-2.0-2 libbonobo2-0 libbonobo2-common libbonoboui2-0 libbonoboui2-common libgnome2-0 libgnomecanvas2-0 libgnomecanvas2-common libgnomeui-0 libgnomeui-common libtidy-0.99-0 python-beautifulsoup python-evolution python-feedparser python-gmenu python-gnome2 python-numpy python-pyorbit python-rsvg python-tz python-utidylib screenlets screenlets-pack-basic 0 upgraded, 23 newly installed, 0 to remove and 2 not upgraded. People say that Recommended packages are installed by default, but they are clearly not included in the NEW packages that will be installed above. I also decided to include the Suggested packages in the installation, so I ran sudo apt-get --install-suggests install screenlets instead, but I got a HUGE list of NEW packages that will be installed; that number is precisely 0 upgraded, 944 newly installed, 0 to remove and 2 not upgraded. Should'nt I be getting only around 10 extra packages?

  Read the article

• Ubuntu 13.10 Installing MariaDB when Apt reports MariaDB has unmet dependencies or broken packages

  - by Ecaz

  I have tried everything to install MariaDB on this clean Ubuntu installation but I keep getting this error, Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: mariadb-server : Depends: mariadb-server-5.5 (= 5.5.33a+maria-1~saucy) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I have followed this guide to try and install it, http://www.unixmen.com/install-lemp-server-nginx-mysql-mariadb-php-ubuntu-13-10-server/ And I have also followed the "official" guide on the MariaDB downloads page for 13.10 https://downloads.mariadb.org/mariadb/repositories/ But nothing seems to be working. Edit 1 I have tried both How do I resolve unmet dependencies? and How to install MariaDB? but it still gives me the error I posted above. It's a fresh Ubuntu install with hardly anything installed. Edit 2 All the check boxes are ticket in Updates. I ran: sudo apt-get update && sudo apt-get -f install mariadb-server-5.5"=5.5.33a+maria-1~saucy" And it gave me this error: The following packages have unmet dependencies: mariadb-server-5.5 : Depends: mariadb-client-5.5 (>= 5.5.33a+maria-1~saucy) but it is not going to be installed Depends: mariadb-server-core-5.5 (>= 5.5.33a+maria-1~saucy) but it is not going to be installed E: Unable to correct problems, you have held broken packages.

  Read the article

• Cannot use apt-get/dpkg -- Input/output error

  - by mecho

  I have bumped into an issue that doesn't allow me to do anything related to apt-get: install, remove, etc. Whenever I try to do something (e.g. sudo apt-get install firefox -f) it gives me the same error message: Reading database ... dpkg: unrecoverable fatal error, aborting: unable to open files list file for package `fontconfig-config': Input/output error E: Sub-process /usr/bin/dpkg returned an error code (2) I have tried to deal with the package `fontconfig-config' without success. I have found that the "Input/output error" is usually linked with physical problems of the hd, but I do not think that's the case I am using that hd without any other problem. I have tried removing the mention to the package in /var/lib/dpkg/status as mentioned here. I have tried deleting all files related to the package in /var/lib/dpkg/info as I found somewhere. But I still cannot do anything. The funny bit comes when I look for the file that is giving me troubles: mecho@Ansible-MS-7680:/var/lib/dpkg/info$ ls fontconfig* ls: cannot access fontconfig-config.list: Input/output error fontconfig.list fontconfig.postinst fontconfig.preinst fontconfig.triggers fontconfig.md5sums fontconfig.postrm fontconfig.prerm This is done after I deleted all files ... it looks like fontconfig-config.list still exists but it doesn't show up! Any idea about how to solve the problem? I am on kubuntu precise, fontconfig-config_2.8.0-3ubuntu9.1

  Read the article

• REST application, Transactions, Cache drop

  - by Julian Davchev

  Hi, I am building REST API in php with memcache layer on top for caching all resources. After some reading experience it turns out it's best when documents are as simple as posible...mainly due to dropping cache sequences. So if there is 'building','room' entities for the 'room' document I would only place the id of the 'building' and not the whole data of it. Then on api client side I would merge data as needed. Problem becomes when I need to update/insert (most cases more than one table). I update one resource but on second update system fails or whatever and there becomes database inconsistancies. I see several solutions: 1. Implement rest transactions which I find wrong and complex as idea is to be stateless and easy. 2. On update/insert actions I pass more complex data (not single entities) so I can force transactions on API level. But this will make it weird that your GET document structure is same as PUT document structure. And again somehow make drop sequences complex. Any pointers are more than welcome. Cheers,

  Read the article

• Cannot Cache NHibernate Future Criteria Results

  - by Emilian

  I have the following code: public void FuturesQuery() { using (var session = SessionFactory.OpenSession()) { var blogs = session.CreateCriteria<Blog>() .SetMaxResults(5) .SetCacheable(true) .SetCacheMode(CacheMode.Normal) .SetCacheRegion("BlogQuery") .Future<Blog>(); var countOfBlogs = session.CreateCriteria<Blog>() .SetProjection(Projections.Count(Projections.Id())) .SetCacheable(true) .SetCacheMode(CacheMode.Normal) .SetCacheRegion("BlogQuery") .FutureValue<int>(); Console.WriteLine("Number of blogs: {0}", countOfBlogs.Value); foreach (var blog in blogs) { Console.WriteLine(blog.Title); } } using (var session = SessionFactory.OpenSession()) { var blogs = session.CreateCriteria<Blog>() .SetMaxResults(5) .SetCacheable(true) .SetCacheMode(CacheMode.Normal) .SetCacheRegion("BlogQuery") .Future<Blog>(); var countOfBlogs = session.CreateCriteria<Blog>() .SetProjection(Projections.Count(Projections.Id())) .SetCacheable(true) .SetCacheMode(CacheMode.Normal) .SetCacheRegion("BlogQuery") .FutureValue<int>(); Console.WriteLine("Number of blogs: {0}", countOfBlogs.Value); foreach (var blog in blogs) { Console.WriteLine(blog.Title); } } } I was expecting that the second time I query for blogs and count of blogs I will get values from cache but instead the queries hit the database. If I don't use Futures I get the expected results. Does this means that results from Criteria using futures cannot be cached?

  Read the article

• Post-loading : check if an image is in the browser cache

  - by Mathieu

  Short version question : Is there navigator.mozIsLocallyAvailable equivalent function that works on all browsers, or an alternative? Long version :) Hi, Here is my situation : I want to implement an HtmlHelper extension for asp.net MVC that handle image post-loading easily (using jQuery). So i render the page with empty image sources with the source specified in the "alt" attribute. I insert image sources after the "window.onload" event, and it works great. I did something like this : $(window).bind('load', function() { var plImages = $(".postLoad"); plImages.each(function() { $(this).attr("src", $(this).attr("alt")); }); }); The problem is : After the first loading, post-loaded images are cached. But if the page takes 10 seconds to load, the cached post-loaded images will be displayed after this 10 seconds. So i think to specify image sources on the "document.ready" event if the image is cached to display them immediatly. I found this function : navigator.mozIsLocallyAvailable to check if an image is in the cache. Here is what I've done with jquery : //specify cached image sources on dom ready $(document).ready(function() { var plImages = $(".postLoad"); plImages.each(function() { var source = $(this).attr("alt") var disponible = navigator.mozIsLocallyAvailable(source, true); if (disponible) $(this).attr("src", source); }); }); //specify uncached image sources after page loading $(window).bind('load', function() { var plImages = $(".postLoad"); plImages.each(function() { if ($(this).attr("src") == "") $(this).attr("src", $(this).attr("alt")); }); }); It works on Mozilla's DOM but it doesn't works on any other one. I tried navigator.isLocallyAvailable : same result. Is there any alternative?

  Read the article

< Previous Page | 22 23 24 25 26 27 28 29 30 31 32 33  | Next Page >