I’ve got an Atom C2758 system: CPU: Intel(R) Atom(TM) CPU C2758 @ 2.40GHz (2400.06-MHz K8-class CPU) Origin = "GenuineIntel" Id = 0x406d8 Family = 0x6 Model = 0x4d Stepping = 8 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x43d8e3bf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,TSCDLT,AESNI,RDRAND> AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM> AMD Features2=0x101<LAHF,Prefetch> Standard Extended Features=0x2282<TSCADJ,SMEP,ENHMOVSB>
Enabling aesni seems to make performance much worse: root@router:~ # openssl speed -evp aes-256-cbc -elapsed You have chosen to measure elapsed time instead of user CPU time. Doing aes-256-cbc for 3s on 16 size blocks: 33200486 aes-256-cbc's in 3.01s Doing aes-256-cbc for 3s on 64 size blocks: 11444626 aes-256-cbc's in 3.01s Doing aes-256-cbc for 3s on 256 size blocks: 3328753 aes-256-cbc's in 3.02s Doing aes-256-cbc for 3s on 1024 size blocks: 866523 aes-256-cbc's in 3.02s Doing aes-256-cbc for 3s on 8192 size blocks: 108891 aes-256-cbc's in 3.00s OpenSSL 1.0.1e-freebsd 11 Feb 2013 built on: date not available options:bn(64,64) rc4(16x,int) des(idx,cisc,16,int) aes(partial) idea(int) blowfish(idx) compiler: cc The 'numbers' are in 1000s of bytes per second processed. type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes aes-256-cbc 176609.34k 243517.86k 281851.62k 293480.37k 297345.02k root@router:~ # kldload aesni root@router:~ # openssl speed -evp aes-256-cbc -elapsed You have chosen to measure elapsed time instead of user CPU time. Doing aes-256-cbc for 3s on 16 size blocks: 881020 aes-256-cbc's in 3.02s Doing aes-256-cbc for 3s on 64 size blocks: 842078 aes-256-cbc's in 3.00s Doing aes-256-cbc for 3s on 256 size blocks: 700368 aes-256-cbc's in 3.03s Doing aes-256-cbc for 3s on 1024 size blocks: 425602 aes-256-cbc's in 3.00s Doing aes-256-cbc for 3s on 8192 size blocks: 76495 aes-256-cbc's in 3.00s OpenSSL 1.0.1e-freebsd 11 Feb 2013 built on: date not available options:bn(64,64) rc4(16x,int) des(idx,cisc,16,int) aes(partial) idea(int) blowfish(idx) compiler: cc The 'numbers' are in 1000s of bytes per second processed. type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes aes-256-cbc 4662.35k 17964.33k 59148.60k 145272.15k 208882.35k Is this expected here, or is something broken? — Kevin _______________________________________________ freebsd-security@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "freebsd-security-unsubscr...@freebsd.org"
