| From: | Jean-Armel Luce <jaluce06(at)gmail(dot)com> |
|---|---|
| To: | Cédric Villemain <cedric(dot)villemain(dot)debian(at)gmail(dot)com> |
| Cc: | Scott Ribe <scott_ribe(at)elevated-dev(dot)com>, "[ADMIN]" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: rsync and streaming replication |
| Date: | 2011-11-17 17:11:20 |
| Message-ID: | CALnckSoXuUPH=FT4TCf+FBcs0Sw7wYDFqPQ18VvwTkVedNs7BA@mail.gmail.com |
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| Lists: | pgsql-admin |
2011/11/16 Scott Ribe <scott_ribe(at)elevated-dev(dot)com>:
> > Does the network connection have high latency?
>
When I ping the server,time=15ms.
> Also, I believe you said -z seemed to slow it down?
>
I confirm
>
> > I'm certainly glad that you've got a 3x speed increase--
>
Me too :-) . Thanks for your advices. Thanks to Cédric too
;
> But still, something seems odd about the performance you've reported, so
> I'm left wondering about what could cause that. Disk performance glitch at
> one end or the other, network performance, CPU load???
>
CPU usage is very low
Today, I tried with command : rsync -rc --block-size=8192
Rsync duration with blksize=8192 was 31 minutes (yesterday without
blocksize, duration was 32 minutes exactly)
Thanks for your help
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