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• Finding position of each word in a sub-array of a multidimensional array

  - by Shreyas Satish

  I have an array: tokens = [["hello","world"],["hello","ruby"]] all_tokens = tokens.flatten.uniq # all_tokens=["hello","world","ruby"] Now I need to create two arrays corresponding to all_tokens, where the first array will contain the position of each word in sub-array of tokens. I.E Output: [[0,0],[1],[1]] # (w.r.t all_tokens) To make it clear it reads, The index of "hello" is 0 and 0 in the 2 sub-arrays of tokens. And second array contains index of each word w.r.t tokens.I.E Output: [[0,1],[0],[1]] To make it clear it reads,the index of hello 0,1. I.E "hello" is in index 0 and 1 of tokens array. Cheers!

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• Getting rid of index.php in the URL when using recess framework and lighttpd

  - by spudnik1979

  I am using the recess php framework with lighttpd Does anyone know how I can use the shorter urls of: http://www.myserver.com/recess Instead of: http://www.myserver.com/index.php/recess The recess readme file says that if I have mod_rewrite I can use the shorter url: -- "Do you have mod_rewrite? -- Yes: Open your browser to the location you unzipped -- No: Open your browser to the location you unzipped followed by index.php" I do have mod_rewrite enabled on lighttpd and i have removed the index.php but I get a 404. Do I need any special rules in my lighttpd.conf?

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• Construct Numpy index given list of starting and ending positions

  - by Abiel

  I have two identically-sized numpy.array objects (both one-dimensional), one of which contains a list of starting index positions, and the other of which contains a list of ending index positions (alternatively you could say I have a list of starting positions and window lengths). In case it matters, the slices formed by the starting and ending positions are guaranteed to be non-overlapping. I am trying to figure out how to use these starting and ending positions to form an index for another array object, without having to use a loop. For example: import numpy as np start = np.array([1,7,20]) end = np.array([3,10,25]) Want to reference somearray[1,2,7,8,9,20,21,22,23,24])

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• Url routing issue in asp.net mvc ...

  - by Pandiya Chendur

  I am doing a return RedirectToAction("Index", "Clients"); from my home controller.... It is fine but my url looks like http://localhost:1115/Clients/Index... How to remove index from url in asp.net mvc? Any suggestion.... My routes, public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "Registrations", "{controller}/{action}/{id}", new { controller = "Registration", action = "Create", id = "" } ); }

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• slow mysql count because of subselect

  - by frgt10

  how to make this select statement more faster? the first left join with the subselect is making it slower... mysql> SELECT COUNT(DISTINCT w1.id) AS AMOUNT FROM tblWerbemittel w1 JOIN tblVorgang v1 ON w1.object_group = v1.werbemittel_id INNER JOIN ( SELECT wmax.object_group, MAX( wmax.object_revision ) wmaxobjrev FROM tblWerbemittel wmax GROUP BY wmax.object_group ) AS wmaxselect ON w1.object_group = wmaxselect.object_group AND w1.object_revision = wmaxselect.wmaxobjrev LEFT JOIN ( SELECT vmax.object_group, MAX( vmax.object_revision ) vmaxobjrev FROM tblVorgang vmax GROUP BY vmax.object_group ) AS vmaxselect ON v1.object_group = vmaxselect.object_group AND v1.object_revision = vmaxselect.vmaxobjrev LEFT JOIN tblWerbemittel_has_tblAngebot wha ON wha.werbemittel_id = w1.object_group LEFT JOIN tblAngebot ta ON ta.id = wha.angebot_id LEFT JOIN tblLieferanten tl ON tl.id = ta.lieferant_id AND wha.zuschlag = (SELECT MAX(zuschlag) FROM tblWerbemittel_has_tblAngebot WHERE werbemittel_id = w1.object_group) WHERE w1.flags =0 AND v1.flags=0; +--------+ | AMOUNT | +--------+ | 1982 | +--------+ 1 row in set (1.30 sec) Some indexes has been already set and as EXPLAIN shows they were used. +----+--------------------+-------------------------------+--------+----------------------------------------+----------------------+---------+-----------------------------------------------+------+----------------------------------------------+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra | +----+--------------------+-------------------------------+--------+----------------------------------------+----------------------+---------+-----------------------------------------------+------+----------------------------------------------+ | 1 | PRIMARY | <derived2> | ALL | NULL | NULL | NULL | NULL | 2072 | | | 1 | PRIMARY | v1 | ref | werbemittel_group,werbemittel_id_index | werbemittel_group | 4 | wmaxselect.object_group | 2 | Using where | | 1 | PRIMARY | <derived3> | ALL | NULL | NULL | NULL | NULL | 3376 | | | 1 | PRIMARY | w1 | eq_ref | object_revision,or_og_index | object_revision | 8 | wmaxselect.wmaxobjrev,wmaxselect.object_group | 1 | Using where | | 1 | PRIMARY | wha | ref | PRIMARY,werbemittel_id_index | werbemittel_id_index | 4 | dpd.w1.object_group | 1 | | | 1 | PRIMARY | ta | eq_ref | PRIMARY | PRIMARY | 4 | dpd.wha.angebot_id | 1 | | | 1 | PRIMARY | tl | eq_ref | PRIMARY | PRIMARY | 4 | dpd.ta.lieferant_id | 1 | Using index | | 4 | DEPENDENT SUBQUERY | tblWerbemittel_has_tblAngebot | ref | PRIMARY,werbemittel_id_index | werbemittel_id_index | 4 | dpd.w1.object_group | 1 | | | 3 | DERIVED | vmax | index | NULL | object_revision_uq | 8 | NULL | 4668 | Using index; Using temporary; Using filesort | | 2 | DERIVED | wmax | range | NULL | or_og_index | 4 | NULL | 2168 | Using index for group-by | +----+--------------------+-------------------------------+--------+----------------------------------------+----------------------+---------+-----------------------------------------------+------+----------------------------------------------+ 10 rows in set (0.01 sec) The main problem while the statement above takes about 2 seconds seems to be the subselect where no index can be used. How to write the statement even more faster? Thanks for help. MT

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• Appengine backreferences - need composite index?

  - by davezor

  I have a query that is very recently starting to throw: "The built-in indices are not efficient enough for this query and your data. Please add a composite index for this query." I checked the line on which this exception is being thrown, and the problem query is this one: count = self.vote_set.filter("direction =", 1).count() This is literally a one-filter operation using appengine's built-in backreferences. I have no idea how to optimize this query...anyone have any suggestions? I tried to add this index: - kind: Vote properties: - name: direction direction: desc - kind: Vote properties: - name: direction And I got a message (obviously) saying this was an unnecessary index. Thanks for your help in advance.

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• Datatable -filter records with linq based on some internal index

  - by Karan

  Hello Guys, I have a datatable with plenty of records. And i have a range like lowerRange = 10 and upperRange = 200. I want the pull the records starting at row 10 till row 200. Now i don't want to add any new index based column into the datatable. Is there any way with the help of linq, i can pull the set of rows based on some internal datatable index? I guess, the datatable must be maintaining some row index implicitly. Please suggest.

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• Adding index key in Grails' Domain

  - by firnnauriel

  I tried following this reference and this is now my domain's code: class SnbrActVector { long nid String term double weight static mapping = { version false nid index:'Nid_Idx' } static constraints = { term(blank:false) } } What I want is to do is to add an index key for 'nid' column. I dropped the existing table and run the app again so the table is then recreated. However, when i check for list of indices, I can't see a 'Nid_Idx', only available is 'PRIMARY'. Do I have to manually create the index and name it 'Nid_idx in my mysql database? Thanks.

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• JMS message received at only one server

  - by BJH

  I'm having a problem with a JEE6 application running in a clustered environment using WebSphere ApplicationServer 8. A search index is used for quick search in the UI (using Lucene), which must be re-indexed after new data arrived in the corresponding DB layer. To achieve this we're sending a JMS message to the application, then the search index will be refreshed. The problem is, that the messages only arrives at one of the cluster members. So only there the search index is up to date. At the other servers it remains outdated. How can I achieve that the search index gets updated at all cluster members? Can I receive the message somehow on all servers? Or is there a better way to do this?

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• Getting a divs z-index to overlap a div with absolute positioning

  - by Paul Herron

  Does anyone know how I could get the logo at the top of my page to appear on top of the curtains. http://nuigums.tumblr.com/ The logo is within a section tag along with the rest of the content with a z-index of 2, which is required to get the footer reveal effect I want. The curtain has a z-index of 3. I tried setting the z-index of the logo div to 4 but I presume the fact that the sections styling overrides that? I would like the logo to scroll with the content of the page also. Thanks. :)

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• divs with z-index & position class

  - by Sotos

  hello, i need your help with div positioning into a page. i have the below divs: - the header with z-index 10, position absolute, top 0, height 250px, width 100% - wrapper with margin 0 auto, width 990 and inside - the menu with z-index 8 - content to the right of the menu with z-index 9 so that i could scroll it below the header. the problem is that i want the menu to have fixed position and this is not possible cause it is not working for the x-axis as it gets outside wrapper. Any ideas? thanks Sot

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• Drupal 7 - change index.php as a default main page

  - by reycoy

  I'm trying to work on my new website Drupal7 while I'm keeping in the hosting my old static website. So I have: index.html (static website. I want to keep for my users) index.php (drupal new installation) Is there a way to set in drupal this kind of situation? The problem, as you problably can see at this point, is that every time I'm going to a different section I'm being redirected to the .html homepage. I mean for example the admin section is: www.mydomain.com/?q=admin instead of www.mydomain.com/index.php?q=admin What's the easiest way to keep the html static web for my current users while I'm developing my drupal7 website in the "background"?

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• AS3: Element stays on stage after manipulating the index(depth)

  - by o15a3d4l11s2

  Here is the problem I have: after I change the index of one movieclip using this code oldIndex=getChildIndex(DisplayObject(e.target)); setChildIndex(DisplayObject(e.target), numChildren - 1); when I give the object its old index setChildIndex(DisplayObject(e.target), oldIndex); and go to another frame of the movie, this element I have changed the index of stays on top of all elements on the new frame. My question is am I doing something wrong and if not, what can I do so that this element stays only in the frame it is placed.

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• weird index behavior

  - by TasostheGreat

  I have set up my table with an index only on done_status(done_status =INT), when I use EXPLAIN SELECT * FROM reminder WHERE done_status=2 i get this back id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE reminder ALL done_status NULL NULL NULL 5 Using where but when I give this command EXPLAIN SELECT * FROM reminder WHERE done_status=1 that's what I get back: id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE reminder ref done_status done_status 4 const 2 first time it shows me it uses 5 rows second time 2 rows I don't think the index works, if I understood it right first time it should give me 3 rows. What do I do wrong? SHOW INDEX FROM reminder: Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment reminder 1 done_status 1 done_status A 5 NULL NULL BTREE

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• Understanding mongod log entries

  - by Jo Erlang

  Can anyone explain the numbers in the % column, in this mongod log snippet ? It is building a new index but I'm not sure I understand why the numbers look like that Tue Nov 20 11:38:08 [initandlisten] connection accepted from 127.0.0.1:49299 #8 (2 connections now open) Tue Nov 20 11:38:08 [conn8] build index xx.yyyy { source: 1 } Tue Nov 20 11:38:19 [conn8] 2921300/243339 1200% Tue Nov 20 11:38:29 [conn8] 4109600/243339 1688% Tue Nov 20 11:38:39 [conn8] 4400100/243339 1808% Tue Nov 20 11:38:49 [conn8] 4676600/243339 1921% Tue Nov 20 11:38:59 [conn8] 4939700/243339 2029% Tue Nov 20 11:39:09 [conn8] 5217800/243339 2144% Tue Nov 20 11:39:19 [conn8] 5439300/243339 2235% Tue Nov 20 11:39:29 [conn8] 5659700/243339 2325% Thanks

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• Setup mutt to read through a threaded message and then return to the email index

  - by dat5h

  I have begun using mutt (terminal email client) recently and I have it setup very nicely and easy to use. My only gripe is that sometimes it is difficult to tell when I transition from one thread to the next. Is it possible to setup the bindings such that moving to the next-undeleted message would check if the next-undeleted message is in the same thread, and if that check is false it returns to the index or throws an error? For example, I currently have bind pager <down> next-undeleted bind pager } next-subthread Is there a more advanced function call that could perform this check? I haven't been able to find much on how to perform more complex function calls with such checks while checking out the manual. Any help would be appreciated.

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• My php homepage downloads index.php instead of being processed on Gandi.net

  - by alekone

  if I go to the homepage of my website http://www.website.com (on a brand new server) the index.php gets donwloaded instead than processed. I don't have the same problem on other folders. my .htaccess reads: AddHandler php5-script .php what could this be? I suspect it's something with php config / or htaccess, but I'm not able to figure it out. help please! edit: I don't know if this helps: it's a wordpress installation, I have this problem only on the public part of the website, not on the admin (that renders correctly)

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• High memory usage on the server - can't determine the process

  - by HTF

  I've noticed high memory usage on the server. Details: OS: CentOS 6.3 - x86_64 Web server: Nginx with PHP-FPM The server is generating PDF documents so the traffic is minimum. top: # top -b -n 1 -a top - 10:04:51 up 21 days, 18:57, 1 user, load average: 0.00, 0.00, 0.00 Tasks: 92 total, 1 running, 91 sleeping, 0 stopped, 0 zombie Cpu(s): 0.3%us, 0.2%sy, 0.0%ni, 99.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 3923092k total, 3720380k used, 202712k free, 133904k buffers Swap: 4194296k total, 12k used, 4194284k free, 147404k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 15855 www-data 20 0 199m 4952 2128 S 0.0 0.1 0:00.06 php-fpm 15853 www-data 20 0 199m 4940 2028 S 0.0 0.1 0:00.06 php-fpm 15850 www-data 20 0 199m 4928 2020 S 0.0 0.1 0:00.05 php-fpm 15851 www-data 20 0 199m 4888 2020 S 0.0 0.1 0:00.06 php-fpm 15852 www-data 20 0 199m 4852 2020 S 0.0 0.1 0:00.06 php-fpm 15857 www-data 20 0 198m 4716 2020 S 0.0 0.1 0:00.06 php-fpm 17553 root 20 0 97816 3860 2924 S 0.0 0.1 0:00.03 sshd 15849 root 20 0 198m 3460 1072 S 0.0 0.1 0:00.12 php-fpm 13441 nginx 20 0 65608 2968 1604 S 0.0 0.1 0:02.06 nginx 13440 nginx 20 0 65608 2964 1600 S 0.0 0.1 0:01.87 nginx 17561 root 20 0 105m 1944 1488 S 0.0 0.0 0:00.01 bash 1150 xfs 20 0 20980 1784 704 S 0.0 0.0 0:00.13 xfs 15863 root 20 0 179m 1424 1028 S 0.0 0.0 0:00.00 rsyslogd 1 root 20 0 19224 1360 1088 S 0.0 0.0 0:17.96 init 1201 nrpe 20 0 40928 1288 704 S 0.0 0.0 3:57.64 nrpe 13226 root 20 0 114m 1216 612 S 0.0 0.0 0:00.01 crond 6691 root 20 0 64068 1156 488 S 0.0 0.0 0:09.59 sshd 13439 root 20 0 65104 1128 292 S 0.0 0.0 0:00.00 nginx 19026 root 20 0 15040 1116 844 R 0.0 0.0 0:00.00 top 451 root 16 -4 11052 1096 316 S 0.0 0.0 0:00.02 udevd 1174 root 18 -2 11048 1064 288 S 0.0 0.0 0:00.00 udevd 1175 root 18 -2 11048 1064 288 S 0.0 0.0 0:00.00 udevd 1065 root 16 -4 93168 824 560 S 0.0 0.0 0:16.00 auditd 1165 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1167 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1169 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1171 root 20 0 4056 564 480 S 0.0 0.0 0:00.00 mingetty 1163 root 20 0 4056 560 480 S 0.0 0.0 0:00.00 mingetty 1176 root 20 0 4056 560 480 S 0.0 0.0 0:00.00 mingetty 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 3 root RT 0 0 0 0 S 0.0 0.0 0:11.75 migration/0 4 root 20 0 0 0 0 S 0.0 0.0 44:30.28 ksoftirqd/0 5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 6 root RT 0 0 0 0 S 0.0 0.0 0:03.51 watchdog/0 7 root RT 0 0 0 0 S 0.0 0.0 0:11.63 migration/1 8 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/1 9 root 20 0 0 0 0 S 0.0 0.0 11:35.50 ksoftirqd/1 10 root RT 0 0 0 0 S 0.0 0.0 0:03.34 watchdog/1 11 root 20 0 0 0 0 S 0.0 0.0 1:36.68 events/0 12 root 20 0 0 0 0 S 0.0 0.0 1:50.57 events/1 13 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cgroup 14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khelper 15 root 20 0 0 0 0 S 0.0 0.0 0:00.00 netns 16 root 20 0 0 0 0 S 0.0 0.0 0:00.00 async/mgr 17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pm 18 root 20 0 0 0 0 S 0.0 0.0 0:07.86 sync_supers 19 root 20 0 0 0 0 S 0.0 0.0 0:10.38 bdi-default 20 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kintegrityd/0 21 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kintegrityd/1 22 root 20 0 0 0 0 S 0.0 0.0 0:04.35 kblockd/0 23 root 20 0 0 0 0 S 0.0 0.0 0:04.18 kblockd/1 24 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpid 25 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpi_notify 26 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kacpi_hotplug 27 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata/0 28 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata/1 29 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata_aux 30 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksuspend_usbd 31 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khubd 32 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kseriod 33 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md/0 34 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md/1 35 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md_misc/0 36 root 20 0 0 0 0 S 0.0 0.0 0:00.00 md_misc/1 37 root 20 0 0 0 0 S 0.0 0.0 0:00.48 khungtaskd 38 root 20 0 0 0 0 S 0.0 0.0 1:07.52 kswapd0 39 root 25 5 0 0 0 S 0.0 0.0 0:00.00 ksmd 40 root 39 19 0 0 0 S 0.0 0.0 0:22.00 khugepaged 41 root 20 0 0 0 0 S 0.0 0.0 0:00.00 aio/0 42 root 20 0 0 0 0 S 0.0 0.0 0:00.00 aio/1 43 root 20 0 0 0 0 S 0.0 0.0 0:00.00 crypto/0 44 root 20 0 0 0 0 S 0.0 0.0 0:00.00 crypto/1 49 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthrotld/0 50 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthrotld/1 52 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kpsmoused 53 root 20 0 0 0 0 S 0.0 0.0 0:00.00 usbhid_resumer 83 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kstriped 233 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_0 234 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_1 321 root 20 0 0 0 0 S 0.0 0.0 0:00.00 virtio-blk 359 root 20 0 0 0 0 S 0.0 0.0 0:03.24 kdmflush 360 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdmflush 380 root 20 0 0 0 0 S 0.0 0.0 0:20.64 jbd2/dm-0-8 381 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 382 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 694 root 20 0 0 0 0 S 0.0 0.0 0:00.00 vballoon 697 root 20 0 0 0 0 S 0.0 0.0 0:00.00 virtio-net 818 root 20 0 0 0 0 S 0.0 0.0 0:00.00 jbd2/vda1-8 819 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 820 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ext4-dio-unwrit 851 root 20 0 0 0 0 S 0.0 0.0 0:06.96 kauditd 1013 root 20 0 0 0 0 S 0.0 0.0 0:15.45 flush-253:0 ps: # ps aux --sort -vsz | head USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND www-data 13213 0.0 0.1 204416 4772 ? S 08:28 0:00 php-fpm: pool default www-data 13214 0.0 0.1 204416 4776 ? S 08:28 0:00 php-fpm: pool default www-data 13215 0.0 0.1 204416 4832 ? S 08:28 0:00 php-fpm: pool default www-data 13216 0.0 0.1 204416 4776 ? S 08:28 0:00 php-fpm: pool default www-data 13218 0.0 0.1 204416 4956 ? S 08:28 0:00 php-fpm: pool default free: #free -m total used free shared buffers cached Mem: 3831 3530 300 0 130 143 -/+ buffers/cache: 3256 574 Swap: 4095 0 4095 When I stooped Nginx, PHP-FPM the memory usage was still the same. Could you help me to investigate what is consuming the memory on the system? Regards

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• Windows 7 Index Search does not work in Google Drive folder

  - by Joel

  I recently installed Google Drive on my Windows 7 laptop and began syncing all my files a few days ago. All was well until I needed to search for some documents in my local copy of Google Drive using Windows 7 Search feature. Windows did not return any results at all. Weirdly, when I turned off Windows indexing for that folder, it began returning results. I don't mind using windows search w/o the index but sometimes it takes too long to search (especially for keywords inside documents like Word and Excel). It's driving me nuts to the point where I have given up on Windows Search and switched to Google Drive's online search to look for files (not as convenient as I still have to go back go google drive in Windows to locate the folder). Any help appreciated!

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• Odd Suhosin memory alerts

  - by slice

  I am getting a lot of odd suhosin alerts in my syslog. The following are example entries: Jun 9 08:46:11 suhosin[9764]: ALERT - script tried to increase memory_limit to 2145386496 bytes which is above the allowed value (attacker '157.55.39.180', file '/var/www/site/index.php') Jun 9 08:46:11 suhosin[9744]: ALERT - script tried to increase memory_limit to 2145386496 bytes which is above the allowed value (attacker '109.74.2.136', file '/var/www/site/test.php') Jun 9 08:46:13 suhosin[9779]: ALERT - script tried to increase memory_limit to 0 bytes which is above the allowed value (attacker 'REMOTE_ADDR not set', file 'unknown') Jun 9 08:46:13 suhosin[9779]: ALERT - script tried to increase memory_limit to 2145386496 bytes which is above the allowed value (attacker 'REMOTE_ADDR not set', file 'unknown') What is happening here? Why 0 bytes or 2145386496 bytes (2046 GB!!??)? Why does it sometimes state the attacker and the requested script and sometimes state 'REMOTE_ADDR not set' and file 'unknown'? How do I proceed to figure this out?

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• Passenger_wsgi.py given precedence over DirectoryIndex?

  - by Walkerneo

  I was having an issue with my site today, where apache wasn't serving index.php by default. I had moved passenger_wsgi.py to the directory above document root so that I could serve python files without having to use PassengerAppRoot in the .htaccess file. I wanted to do this because I set up a development sub-domain on the site, and I wanted to use a different passenger_wsgi for the two domains, but that meant having different .htaccess files for the different PassengerAppRoots. Is there a way to have passenger_wsgi.py where it was and still let apache serve the index.phps? edit: I'm sorry, I'm tired. I just realized that the way this probably works is that passenger_wsgi.py is handling the routing instead of apache.

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• Unused Index Entries: What causes them?

  - by Bart Silverstrim

  I was running chkdsk on one of our servers and it fixed 800 unused index entries (minor inconsistencies) on the drive. I also see these on lab machines running Deep Freeze, where most drive changes are supposed to be prevented although I'm not sure of the mechanism through which it does this. The thing that got me more curious than usual is that this server does very little. Very little activity, it remotely serves out a web app with little use so it's rarely ever touched at the console...so what is it on NTFS drives that causes this? It seems to be treated as if it's nothing, but should this be happening on a barely used filesystem? Is it a sign of corruption? I would think it's something if a disk repair utility sees fit to report it and repair it. Maybe this is more curiosity while doing some routine maintenance on servers, but I'd like to know what this is doing and why it happens, if anyone can give insight on this phenomena.

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• Why does yum index get corrupted?

  - by TomOnTime

  Occasionally yum's cache gets corrupted and we see errors like this: error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error: cannot open Packages index using db3 - (-30974) error: cannot open Packages database in /var/lib/rpm The workaround is rm -f /var/lib/rpm/__db* and then the next "yum" command regenerates the data. My question is: what is likely to be causing this? Is there some common task that ignores locks or has other problem that causes this? We have hundreds of CentOS machines and there is no pattern to which see this problem. It could be a "one in a million" issue, which at large scale is seen often. NOTE: I realize this is a very "open ended" question, but if an answer finds the cause, I will go back and turn the question into something more canonical that directly relates to the specific issue.

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• iPhone - dequeueReusableCellWithIdentifier usage

  - by Jukurrpa

  Hi, I'm working on a iPhone app which has a pretty large UITableView with data taken from the web, so I'm trying to optimize its creation and usage. I found out that dequeueReusableCellWithIdentifier is pretty useful, but after seeing many source codes using this, I'm wondering if the usage I make of this function is the good one. Here is what people usually do: UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"Cell"]; // Add elements to the cell return cell; And here is the way I did it: NSString identifier = [NSString stringWithFormat:@"Cell @d", indexPath.row]: // The cell row UITableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:identifier]; if (cell != nil) return cell; cell = [[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:identifier]; // Add elements to the cell return cell; The difference is that people use the same identifier for every cell, so dequeuing one only avoids to alloc a new one. For me, the point of queuing was to give each cell a unique identifier, so when the app asks for a cell it already displayed, neither allocation nor element adding have to be done. In fine I don't know which is best, the "common" method ceils the table's memory usage to the exact number of cells it display, whislt the method I use seems to favor speed as it keeps all calculated cells, but can cause large memory consumption (unless there's an inner limit to the queue). Am I wrong to use it this way? Or is it just up to the developper, depending on his needs?

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• Memory usage in Flash / Flex / AS3

  - by ggambett

  I'm having some trouble with memory management in a flash app. Memory usage grows quite a bit, and I've tracked it down to the way I load assets. I embed several raster images in a class Embedded, like this [Embed(source="/home/gabriel/text_hard.jpg")] public static var ASSET_text_hard_DOT_jpg : Class; I then instance the assets this way var pClass : Class = Embedded[sResource] as Class; return new pClass() as Bitmap; At this point, memory usage goes up, which is perfectly normal. However, nulling all the references to the object doesn't free the memory. Based on this behavior, looks like the flash player is creating an instance of the class the first time I request it, but never ever releases it - not without references, calling System.gc(), doing the double LocalConnection trick, or calling dispose() on the BitmapData objects. Of course, this is very undesirable - memory usage would grow until everything in the SWFs is instanced, regardless of whether I stopped using some asset long ago. Is my analysis correct? Can anything be done to fix this?

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