Re: gbde Performance - 35Mb/s vs 5.2 MB/s

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 05/26/03

  • Next message: Heiko Schaefer: "Re: gbde Performance - 35Mb/s vs 5.2 MB/s" 
    To: Christophe Zwecker <doc@zwecker.de>
Date: Mon, 26 May 2003 14:21:19 +0200

    In message <3ED203E6.1000202@zwecker.de>, Christophe Zwecker writes:
    >Hi,
    >
    >I get 35MB/s write without gbde and 5 MB on a gbde crypted device.

    >here how I tested:
    >
    >Crypted device:
    >dd if=/dev/zero of=/mnt/test0.trash bs=1024k count=100
    >104857600 bytes transferred in 19.927204 secs (5262033 bytes/sec)
    >
    >Noncrypted:
    >dd if=/dev/zero of=/test0.trash bs=1024k count=100
    >104857600 bytes transferred in 2.993742 secs (35025597 bytes/sec)
    >
    >Could anyone tell me if this is supposed to be slow like that ? Or is
    >there anything I missed ?

    This sounds pretty likely for write performance. 

    -- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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  • Next message: Heiko Schaefer: "Re: gbde Performance - 35Mb/s vs 5.2 MB/s"