Date: Wed, 27 May 2009 23:41:14 +0300 From: Dan Naumov <dan.naumov@gmail.com> To: freebsd-geom@freebsd.org Subject: Re: Re: GELI encryption - CPU requirements? Message-ID: <cf9b1ee00905271341q7c6ea464od04a1e3c3479b843@mail.gmail.com> In-Reply-To: <4A1D9EC5.3020006@vwsoft.com> References: <cf9b1ee00905261637h248ae118i60068ab434e115be@mail.gmail.com> <gvj1de$jcr$1@ger.gmane.org> <4A1D9EC5.3020006@vwsoft.com>
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Wow, so on a dual core Atom, I would essentially be bottlenecked by my CPU at 18 MB/s throughput? I guess that puts GELI encryption completely out of the question and I need to look into some other solution :( - Dan Naumov > For reference, here're the values taken on a dual core Atom: > > type =A0 =A0 =A0 =A0 =A0 =A0 16 bytes =A0 =A0 64 bytes =A0 =A0256 bytes = =A0 1024 bytes =A0 8192 > bytes > aes-128 cbc =A0 =A0 =A017947.16k =A0 =A018502.91k =A0 =A018703.91k =A0 = =A018271.91k > 18955.39k > > aes-192 cbc =A0 =A0 =A016404.93k =A0 =A015966.46k =A0 =A016615.41k =A0 = =A016115.26k > 16466.56k > > aes-256 cbc =A0 =A0 =A013711.70k =A0 =A014016.79k =A0 =A014342.35k =A0 = =A014109.98k > 14738.16k > > > FreeBSD dardanos 7.2-STABLE FreeBSD 7.2-STABLE #10 r192673: Sun May 24 > 10:22:05 CEST 2009 > > CPU: Intel(R) Atom(TM) CPU =A0330 =A0 @ 1.60GHz (1618.44-MHz 686-class CP= U) > =A0Origin =3D "GenuineIntel" =A0Id =3D 0x106c2 =A0Stepping =3D 2 > > Features=3D0xbfe9fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PG= E,MCA,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > =A0Features2=3D0x40e31d<SSE3,DTES64,MON,DS_CPL,TM2,SSSE3,CX16,xTPR,PDCM,<= b22>> > =A0AMD Features=3D0x20100000<NX,LM> > =A0AMD Features2=3D0x1<LAHF> > =A0Cores per package: 2 > =A0Logical CPUs per core: 2 > real memory =A0=3D 2137391104 (2038 MB) > avail memory =3D 2077528064 (1981 MB) > ACPI APIC Table: <INTEL =A0D945GLF2> > FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs > =A0cpu0 (BSP): APIC ID: =A00 > =A0cpu1 (AP/HT): APIC ID: =A01 > =A0cpu2 (AP): APIC ID: =A02 > =A0cpu3 (AP/HT): APIC ID: =A03 > ioapic0: Changing APIC ID to 2 > ioapic0 <Version 2.0> irqs 0-23 on motherboard > kbd1 at kbdmux0 > cryptosoft0: <software crypto> on motherboard
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