I have a database find query which returns 150k documents where each document contains three integer fields and one datetime field. The following code attempts to create a list from the cursor object. Iterating the cursor is incredibly slow - about 80 seconds! The same operation via the C++ drivers is orders of magnitude faster - it must be an issue with PyMongo?
client = MongoClient()
client = MongoClient
Hi everybody,
I ran an open-source banner serving softwar (phpAdsNew) using both ndb and
innodb engine. The innodb engine is the one that the developers of phpAdsNew
suggest for using. With a (relatively) small load on it I noticed that using
the ndb engine, database access was very slow, it was taking a lot of time
for a banner to be server, and in a 80% no banner was served at all.
Then I
i have MSAccess table with 10000 records without any index
i import same table in MySQL without any index
When i access data from this table through ODBC in ColdFusion:
Data from Access took 14 Sec and
Data from MySQL took 24 Sec
MySQL seems to be halfway back....??
Does this the case realy??
Comments??
i have a table with 10000 records in MS Access and
MySQL with no index in either database.
I query both tables from ColdFusion using ODBC datasources and
Data from Access took 13sec to display while
Date from MySQL took 23sec to come up
MySQL seems to be half way slow....????
should i use index etc????
comments???
Hi,
I have the following query and everytime i try to run it, it returns an
error "Mysql server has gone away". Is it beacause the query is very slow?
If so, how can i speed it up?
Query ->
SELECT a.idemail, a.fklastresp
FROM wmkt_email a, wmkt_client b, wmkt_maillist_client c
WHERE bActive AND b.fkemail NOT IN (1, 2 )
AND c.fkmaillist IN (2) AND a.idemail=b.fkemail AND c.fkclient=b.
I have a table with 2 fields which I, every fifteen minutes, load new data
into. The data is not formatted by me. It comes from an external source, so
when the data is added to the table, the ID doesn�t come in the right order.
The table looks like this:
+-----+--------------+
| ID | headline |
+-----+--------------+
| 1 | head1 |
+-----+--------------+
| 2 | head2 |
+-----+--------------+
|
An error occured while fetching this message, sorry !
Hi,
I have got a cluster with 3 machines : 1 Master and 2 slaves
I set -the mapred max tasks 5
-mapred map tasks 17 and reduce tasks 2
I start crawl with depth 2 topN 2 but it runs approximately 25 minute.
I start a local crawl with 1 computer and it finishes in 2 minutes .
The difference is very big .Is it normal or am i wrong in configurations.
I tryed with different
Hello,
I have been provided a muscular linux server to use as a Mysql server
in our organization. The server is located just beside the web server
and within the same network. This dedicated server has 8GB RAM, i5 processors
and running mysql as service. No apache, php ..... nothing. All resources are
dedicated to mysql only.
Mysql version - mysql Ver 14.14 Distrib 5.1.49, for debian
Hi,
why innodb queries work MUCH slower (100 times) than if the table was of
myisam type? It's mysql 4.0.3 on FreeBSD 4.5 server. The innodb monitor
outputs many messages like the following, why are they there and what do
they mean?
Purge done for trx's n:o < 0 782 undo n:o < 0 0
Total number of lock structs in row lock hash table 0
LIST OF TRANSACTIONS FOR EACH SESSION:
MySQL thread
