On Mon, Apr 9, 2012 at 6:50 PM, Tomas Vondra wrote:
> On 10.4.2012 00:37, Merlin Moncure wrote:
>> On Thu, Apr 5, 2012 at 9:47 AM, Tomas Vondra wrote:
>>> If you have slower drives, the dependency is about linear (half the
>>> speed -> twice the time). So either your drives are very slow, or
>>>
On 10.4.2012 00:37, Merlin Moncure wrote:
> On Thu, Apr 5, 2012 at 9:47 AM, Tomas Vondra wrote:
>> If you have slower drives, the dependency is about linear (half the
>> speed -> twice the time). So either your drives are very slow, or
>> there's something rotten.
>>
>> I still haven's seen iostat
On Thu, Apr 5, 2012 at 9:47 AM, Tomas Vondra wrote:
> On 5.4.2012 15:44, superman0920 wrote:
>> Sure, i will post that at tomorrow.
>>
>> Today I install PG and MySQL at a Server. I insert 85 rows record
>> to each db.
>> I execute "select count(*) from poi_all_new" at two db.
>> MySQL takes
Tomas Vondra wrote:
> On 5.4.2012 15:44, superman0920 wrote:
>> Today I install PG and MySQL at a Server. I insert 85 rows
>> record to each db.
>> I execute "select count(*) from poi_all_new" at two db.
>> MySQL takes 0.9s
>> PG takes 364s
> Are you sure the comparison was fair, i.e. bot
On 5.4.2012 15:44, superman0920 wrote:
> Sure, i will post that at tomorrow.
>
> Today I install PG and MySQL at a Server. I insert 85 rows record
> to each db.
> I execute "select count(*) from poi_all_new" at two db.
> MySQL takes 0.9s
> PG takes 364s
First of all, keep the list (pgsql-pe
On 4.4.2012 18:49, superman0920 wrote:
> Thank you for your reply
> I tried executing "UPDATE poi SET py = replace(py, ' ','');", that took
> long long time(about 20+ hours) and no error report. Just like locked.
OK, that's weird. So we need a bit more details - what PostgreSQL
version is this?
On 4.4.2012 17:52, superman0920 wrote:
> Hi list!
>
> i have a table which has 850 rows records. i write a java program to
> update these records.
> i use 100 threads to update the records. For example, thread-1 update
> 1~85000 records; thread-2 update 85001~17 and so on.
> The update sql'
Hi list!
i have a table which has 850 rows records. i write a java program to update
these records.
i use 100 threads to update the records. For example, thread-1 update 1~85000
records; thread-2 update 85001~17 and so on.
The update sql's aim is remove the space in the column and it is
