| From: | Jack Ng <Jack(dot)Ng(at)huawei(dot)com> |
|---|---|
| To: | Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com> |
| Cc: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>, Ni Ku <jakkuniku(at)gmail(dot)com> |
| Subject: | RE: Changing shared_buffers without restart |
| Date: | 2025-05-13 05:03:03 |
| Message-ID: | 73f05b290b584e0581c4a96a33daa77b@huawei.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Hi Ashutosh,
> > * During resize, simply calculate the new size and call ftruncate on each
> > segment to adjust memory accordingly, no need to mmap/munmap or modify any
> > memory mapping.
> >
> >
> That's same as my understanding.
Great, thanks for confirming!
> I thought I had shared a test program upthread, but I don't find it now. Attached here. Can you please share your test program?
Sure, mine is attached here (it’s based on another test program you shared before :-)
Regards,
Jack Ng
| Attachment | Content-Type | Size |
|---|---|---|
| test_hugepage_mappings.c | text/plain | 5.7 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Yasir | 2025-05-13 05:28:51 | Re: Why our Valgrind reports suck |
| Previous Message | Rintaro.Ikeda | 2025-05-13 03:49:53 | Re: Suggestion to add --continue-client-on-abort option to pgbench |