Rsync performance with large exchange database files
kmk at sanitarium.net
Mon Feb 10 10:14:24 MST 2014
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If possible try adding a cache disk. It doesn't have to be anything
On 02/10/2014 12:12 PM, bruce at sqls.net wrote:
> ------ Original Message ------ From: "Kevin Korb"
> <kmk at sanitarium.net> To: rsync at lists.samba.org Sent: 2/10/2014
> 10:57:08 AM Subject: Re: Rsync performance with large exchange
> database files
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>> 3.1.0 will probably help some.
>> What are the specs of the FreeBSD system? I have found that ZFS
>> on FreeBSD is extremely RAM hungry. In my experience 8GB of RAM
>> is the minimum if dedup is disabled and 16BG of RAM for when
>> dedup is enabled.
>> Also, a cache disk helps a lot.
> The FreeBSD system has 32GB of ram, dual Xeon E5620 cpus, the ZFS
> pool is a 6 disk (HGST 7.2K SATA 2TB drives) raidz2 array. There's
> no compression or deduplication enabled on the pool. There isn't
> any cache disks setup though.
> I'm starting to do some read-performance tests on the windows
> machine to see if there's a problem there.
> When watching the rsync processes I'm not always clear which end
> it's waiting on.
Kevin Korb Phone: (407) 252-6853
Systems Administrator Internet:
FutureQuest, Inc. Kevin at FutureQuest.net (work)
Orlando, Florida kmk at sanitarium.net (personal)
Web page: http://www.sanitarium.net/
PGP public key available on web site.
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