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Date: Wed, 04 Aug 2010 16:40:22 +0200
From: Martin Matuska <mm@FreeBSD.org>
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To: "Alex V. Petrov" <alexvpetrov@gmail.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: zpool - low speed write
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 Try booting with the following on /boot/loader.conf:
vfs.zfs.vdev.max_pending="10"
vfs.zfs.txg.write_limit_override=268435456

And remove setting:
vfs.zfs.cache_flush_disable=1

Then try a dd from /dev/zero.

Cheers,
mm

Dňa 4. 8. 2010 16:13, Alex V. Petrov  wrote / napísal(a):
> interesting results:
>
> From single-UDF-disk to pool:
> $ dd if=petrovs-disk1.iso of=/tank/petrovs-disk1.iso bs=1M
> 3545+1 records in
> 3545+1 records out
> 3718002688 bytes transferred in 438.770195 secs (8473690 bytes/sec)
>
> From single-UDF-disk to null:
> $ dd if=petrovs-disk1.iso of=/dev/null bs=1M
> 3545+1 records in
> 3545+1 records out
> 3718002688 bytes transferred in 83.304575 secs (44631435 bytes/sec)
> ------
> Alex V. Petrov
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