Horton

Re: Speed up Clog Access by increasing CLOG buffers

Amit Kapila <amit.kapila16@gmail.com>

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From: Amit Kapila <amit.kapila16@gmail.com>
To: David Steele <david@pgmasters.net>
Cc: Robert Haas <robertmhaas@gmail.com>, Thom Brown <thom@linux.com>, Simon Riggs <simon@2ndquadrant.com>, Jesper Pedersen <jesper.pedersen@redhat.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2016-03-15T14:25:49Z
Lists: pgsql-hackers 
On Tue, Mar 15, 2016 at 7:54 PM, David Steele <david@pgmasters.net> wrote:
>
> On 3/15/16 1:17 AM, Amit Kapila wrote:
>
> > On Tue, Mar 15, 2016 at 12:00 AM, David Steele <david@pgmasters.net
> >
> >> This patch no longer applies cleanly:
> >>
> >> $ git apply ../other/group_update_clog_v6.patch
> >> error: patch failed: src/backend/storage/lmgr/proc.c:404
> >> error: src/backend/storage/lmgr/proc.c: patch does not apply
> >> error: patch failed: src/include/storage/proc.h:152
> >> error: src/include/storage/proc.h: patch does not apply
> >
> > For me, with patch -p1 < <path_of_patch> it works, but any how I have
> > updated the patch based on recent commit.  Can you please check the
> > latest patch and see if it applies cleanly for you now.
>
> Yes, it now applies cleanly (101fd93).
>

Thanks for verification.


With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com

Commits

  1. Use group updates when setting transaction status in clog.

  2. Improve 64bit atomics support.

  3. Add ProcArrayGroupUpdate wait event.

  4. Make the different Unix-y semaphore implementations ABI-compatible.

  5. Fix broken ALTER INDEX documentation

  6. Code and docs review for commit 3187d6de0e5a9e805b27c48437897e8c39071d45.

  7. Partition the freelist for shared dynahash tables.

  8. Correct StartupSUBTRANS for page wraparound

  9. Make idle backends exit if the postmaster dies.

  10. contrib/sslinfo: add ssl_extension_info SRF

  11. Reduce ProcArrayLock contention by removing backends in batches.

  12. Fix `make installcheck` for serializable transactions.

  13. Lockless StrategyGetBuffer clock sweep hot path.

  14. Reduce sinval synchronization overhead.