| From: | Karel Zak <zakkr(at)zf(dot)jcu(dot)cz> |
|---|---|
| To: | Junfeng Zhang <junfengz(at)cae(dot)wisc(dot)edu> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Using Threads? |
| Date: | 2000-12-04 11:23:34 |
| Message-ID: | Pine.LNX.3.96.1001204120620.12062C-100000@ara.zf.jcu.cz |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Mon, 27 Nov 2000, Junfeng Zhang wrote:
> Hello all,
>
> I am new to postgreSQL. When I read the documents, I find out the Postmaster
> daemon actual spawns a new backend server process to serve a new client
> request. Why not use threads instead? Is that just for a historical reason,
> or some performance/implementation concern?
It's a little a historical reason, but not only. The PostgreSQL allows
to use user defined modules (functions), it means that bad module or
bug in core code crash one backend only, but postmaster run still. In the
thread model crash all running backend. Big differntion is in the lock
method too.
Karel
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Vince Vielhaber | 2000-12-04 11:37:23 | Re: beta testing version |
| Previous Message | Zeugswetter Andreas SB | 2000-12-04 09:57:05 | AW: broken locale in 7.0.2 without multibyte support (F reeBSD 4.1-RELEASE) ? |