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From: Bossart, Nathan <[email protected]>
To: Kyotaro Horiguchi <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: Estimating HugePages Requirements?
Date: Tue, 7 Sep 2021 17:09:08 +0000
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>
	<[email protected]>

On 9/6/21, 11:24 PM, "Kyotaro Horiguchi" <[email protected]> wrote:
> At Fri, 3 Sep 2021 17:46:05 +0000, "Bossart, Nathan" <[email protected]> wrote in
>> On 9/2/21, 10:12 PM, "Kyotaro Horiguchi" <[email protected]> wrote:
>> > I noticed that postgres -C shared_memory_size showed 137 (= 144703488)
>> > whereas the error message above showed 148897792 bytes (142MB). So it
>> > seems that something is forgotten while calculating
>> > shared_memory_size.  As the consequence, launching postgres setting
>> > huge_pages_required (69 pages) as vm.nr_hugepages ended up in the
>> > "could not map anonymous shared memory" error.
>>
>> Hm.  I'm not seeing this with the v5 patch set, so maybe I
>> inadvertently fixed it already.  Can you check this again with v5?
>
> Thanks! I confirmed that the numbers match with v5.

Thanks for confirming.

Nathan

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