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Re: Relation extension scalability - Mailing list pgsql-hackers

From Dilip Kumar
Subject Re: Relation extension scalability
Date
Msg-id CAFiTN-tnLe=Nr2SerQBv1UWEAr698nCviVPqBYoY3HmWSgy3pg@mail.gmail.com
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In response to Re: Relation extension scalability  (Dilip Kumar <dilipbalaut@gmail.com>)
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On Wed, Mar 30, 2016 at 7:51 AM, Dilip Kumar <dilipbalaut@gmail.com> wrote:
+ if (lockWaiters)
+ /*
+ * Here we are using same freespace for all the Blocks, but that
+ * is Ok, because all are newly added blocks and have same freespace
+ * And even some block which we just added to FreespaceMap above, is
+ * used by some backend and now freespace is not same, will not harm
+ * anything, because actual freespace will be calculated by user
+ * after getting the page.
+ */
+ UpdateFreeSpaceMap(relation, firstBlock, blockNum, freespace);


Does this look good ?

Done in better way..

+ lockWaiters = RelationExtensionLockWaiterCount(relation);
+
+ if (lockWaiters == 0)
+ return;
+


--
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com
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