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Re: loop device memory usage
Dan Hollis wrote:
> On Mon, 6 Jan 2003, Jari Ruusu wrote:
> > This is explained in loop-AES' README file. Look for section "Performance
> > tuning for 2.4 kernels".
> > As to question of how many simultaneous writes, each device backed loop can
> > have preallocated number of pages in-flight simultaneously. In-flight
> > meaning that a request has been sent to underlying driver (ide or scsi), but
> > underlying driver has not yet acknowledged that request as completed.
>
> any ways to increase loop performance on 2.4.19 / AES-v1.6f ?
> device-backed AES128 on duron 1200 I get 24mbyte/sec...
You could set "options loop lo_prealloc=200" in your /etc/modules.conf but I
doubt it improves performance. 24 Mbyte/sec may well be the maximum your
disk can do. How fast is that same disk when used without encryption (and
without loop)?
Regards,
Jari Ruusu <jari.ruusu@pp.inet.fi>
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Linux-crypto: cryptography in and on the Linux system
Archive: http://mail.nl.linux.org/linux-crypto/