Re: Raid 10 chunksize

Список
Период
Сортировка
От Mark Kirkwood
Тема Re: Raid 10 chunksize
Дата
Msg-id 49D5CE78.3070200@paradise.net.nz
обсуждение исходный текст
Ответ на Re: Raid 10 chunksize  (Mark Kirkwood)
Список pgsql-performance
Дерево обсуждения
Raid 10 chunksize  (Mark Kirkwood, )
 Re: Raid 10 chunksize  (Scott Carey, )
  Re: Raid 10 chunksize  (David Rees, )
   Re: Raid 10 chunksize  (Greg Smith, )
 Re: Raid 10 chunksize  (Scott Marlowe, )
  Re: Raid 10 chunksize  (Mark Kirkwood, )
   Re: Raid 10 chunksize  (Jerry Champlin, )
   Re: Raid 10 chunksize  (Mark Kirkwood, )
    Re: Raid 10 chunksize  (Scott Carey, )
     Re: Raid 10 chunksize  (Mark Kirkwood, )
      Re: Raid 10 chunksize  (Mark Kirkwood, )
 Re: Raid 10 chunksize  (Greg Smith, )
  Re: Raid 10 chunksize  (Scott Carey, )
   Re: Raid 10 chunksize  (Merlin Moncure, )
    Re: Raid 10 chunksize  (Scott Carey, )
     Re: Raid 10 chunksize  (Merlin Moncure, )
     Re: Raid 10 chunksize  (Scott Carey, )
  Re: Raid 10 chunksize  (Mark Kirkwood, )
   Re: Raid 10 chunksize  (Greg Smith, )
    Re: Raid 10 chunksize  (Mark Kirkwood, )
 Re: Raid 10 chunksize  (Stef Telford, )
  Re: Raid 10 chunksize  (Mark Kirkwood, )
   Re: Raid 10 chunksize  (Scott Carey, )
    Re: Raid 10 chunksize  (Scott Carey, )
     Re: Raid 10 chunksize  (Mark Kirkwood, )
      Re: Raid 10 chunksize  (Stef Telford, )
       Re: Raid 10 chunksize  (Greg Smith, )
        Re: Raid 10 chunksize  (Stef Telford, )
         Re: Raid 10 chunksize  (Scott Marlowe, )
          Re: Raid 10 chunksize  (Stef Telford, )
           Re: Raid 10 chunksize  (Scott Marlowe, )
            Re: Raid 10 chunksize  (Greg Smith, )
             Re: Raid 10 chunksize  (Matthew Wakeling, )
              Re: Raid 10 chunksize  (Scott Marlowe, )
            Re: Raid 10 chunksize  (Scott Carey, )
             Re: Raid 10 chunksize  (, )
             Re: Raid 10 chunksize  (Scott Marlowe, )
           Re: Raid 10 chunksize  (Matthew Wakeling, )
            Re: Raid 10 chunksize  (Scott Marlowe, )
            Re: Raid 10 chunksize  (Stef Telford, )
            Re: Raid 10 chunksize  (Scott Carey, )
          Re: Raid 10 chunksize  (Matthew Wakeling, )
         Re: Raid 10 chunksize  (Scott Carey, )
          Re: Raid 10 chunksize  (Greg Smith, )
           Re: Raid 10 chunksize  (James Mansion, )
            Re: Raid 10 chunksize  (Greg Smith, )
           Re: Raid 10 chunksize  (Scott Carey, )
            Re: Raid 10 chunksize  (Greg Smith, )
           Re: Raid 10 chunksize  (Ron Mayer, )
            Re: Raid 10 chunksize  (Hannes Dorbath, )
       Re: Raid 10 chunksize  (Stef Telford, )
        Re: Raid 10 chunksize  (Stef Telford, )
         Re: Raid 10 chunksize  (Scott Carey, )
       Re: Raid 10 chunksize  (Mark Kirkwood, )
      Re: Raid 10 chunksize  (, )
       Re: Raid 10 chunksize  (, )
 Re: Raid 10 chunksize  (Greg Smith, )
  Re: Raid 10 chunksize  (, )
   Re: Raid 10 chunksize  (Greg Smith, )
   Re: Raid 10 chunksize  (Scott Carey, )
Mark Kirkwood wrote:
> Rebuilt with 256K chunksize:
>
> transaction type: TPC-B (sort of)
> scaling factor: 100
> number of clients: 24
> number of transactions per client: 12000
> number of transactions actually processed: 288000/288000
> tps = 942.852104 (including connections establishing)
> tps = 943.019223 (excluding connections establishing)
>

Increasing checkpoint_segments to 96 and decreasing
bgwriter_lru_maxpages to 100:

transaction type: TPC-B (sort of)
scaling factor: 100
number of clients: 24
number of transactions per client: 12000
number of transactions actually processed: 288000/288000
tps = 1219.221721 (including connections establishing)
tps = 1219.501150 (excluding connections establishing)

... as suggested by Greg (actually he suggested reducing
bgwriter_lru_maxpages to 0, but this seemed to be no better). Anyway,
seeing quite a reasonable improvement (about 83% from where we started).
It will be interesting to see how/if the improvements measured in
pgbench translate into the "real" application. Thanks for all your help
(particularly to both Scotts, Greg and Stef).

regards

Mark

В списке pgsql-performance по дате отправления:

Предыдущее
От: Tom Lane
Дата:
Сообщение: Re: plpgsql arrays
Следующее
От: Matthew Wakeling
Дата:
Сообщение: Re: plpgsql arrays