Re: Speed up Clog Access by increasing CLOG buffers

On Thu, Apr 7, 2016 at 10:16 AM, Andres Freund <andres@anarazel.de> wrote:
>
> Hi,
>
> On 2016-04-07 09:14:00 +0530, Amit Kapila wrote:
> > On Sat, Apr 2, 2016 at 5:25 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> > I have ran exactly same test on intel x86 m/c and the results are as below:
>
> Thanks for running these tests!
>
> > Client Count/Patch_ver (tps) 2 128 256
> > HEAD – Commit 2143f5e1 2832 35001 26756
> > clog_buf_128 2909 50685 40998
> > clog_buf_128 +group_update_clog_v8 2981 53043 50779
> > clog_buf_128 +content_lock 2843 56261 54059
> > clog_buf_128 +nocontent_lock 2630 56554 54429
>
> Interesting.
>
> could you perhaps also run a test with -btpcb-like@1 -bselect-only@3?
>

This is the data with -b tpcb-like@1 with 20-min run for each version and I could see almost similar results as the data posted in previous e-mail.

Client Count/Patch_ver (tps)	256
clog_buf_128	40617
clog_buf_128 +group_clog_v8	51137
clog_buf_128 +content_lock	54188

For -b select-only@3,  I have done quicktest for each version and number is same 62K~63K for all version, why do you think this will improve select-only workload?