Dne 31.08.2012 00:01, Tomas Vondra napsal:
On 30 Srpen 2012, 23:44, Robert Haas wrote:
On Thu, Aug 30, 2012 at 3:48 PM, Tomas Vondra wrote:
That sounds like a pretty trivial patch. I've been thinking about
yet
another option - histograms (regular or with exponential bins).
I thought about t
On Thu, Aug 30, 2012 at 3:48 PM, Tomas Vondra wrote:
> That sounds like a pretty trivial patch. I've been thinking about yet
> another option - histograms (regular or with exponential bins).
I thought about that, too, but I think high-outliers is a lot more
useful. At least for the kinds of thin
On 30 Srpen 2012, 23:44, Robert Haas wrote:
> On Thu, Aug 30, 2012 at 3:48 PM, Tomas Vondra wrote:
>> That sounds like a pretty trivial patch. I've been thinking about yet
>> another option - histograms (regular or with exponential bins).
>
> I thought about that, too, but I think high-outliers is
On 30 Srpen 2012, 17:46, Robert Haas wrote:
> On Sun, Aug 26, 2012 at 1:04 PM, Tomas Vondra wrote:
>> Attached is an improved patch, with a call to rand() replaced with
>> getrand().
>>
>> I was thinking about the counter but I'm not really sure how to handle
>> cases like "39%" - I'm not sure a p
On Sun, Aug 26, 2012 at 1:04 PM, Tomas Vondra wrote:
> Attached is an improved patch, with a call to rand() replaced with
> getrand().
>
> I was thinking about the counter but I'm not really sure how to handle
> cases like "39%" - I'm not sure a plain (counter % 100 < 37) is not a
> good sampling,
On 26.8.2012 02:48, Tomas Vondra wrote:
> On 26.8.2012 00:19, Jeff Janes wrote:
>> On Fri, Aug 24, 2012 at 2:16 PM, Tomas Vondra wrote:
>>> Hi,
>>>
>>> attached is a patch that adds support for random sampling in pgbench, when
>>> it's executed with "-l" flag. You can do for example this:
>>>
>>>
On 26.8.2012 00:19, Jeff Janes wrote:
> On Fri, Aug 24, 2012 at 2:16 PM, Tomas Vondra wrote:
>> Hi,
>>
>> attached is a patch that adds support for random sampling in pgbench, when
>> it's executed with "-l" flag. You can do for example this:
>>
>> $ pgbench -l -T 120 -R 1 db
>>
>> and then only
On Fri, Aug 24, 2012 at 2:16 PM, Tomas Vondra wrote:
> Hi,
>
> attached is a patch that adds support for random sampling in pgbench, when
> it's executed with "-l" flag. You can do for example this:
>
> $ pgbench -l -T 120 -R 1 db
>
> and then only 1% of transactions will be written into the log
Hi,
attached is a patch that adds support for random sampling in pgbench, when
it's executed with "-l" flag. You can do for example this:
$ pgbench -l -T 120 -R 1 db
and then only 1% of transactions will be written into the log file. If you
omit the tag, all the transactions are written (i.e.
