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xen-users
[Xen-users] GPLPV and disk speed
Hi
Something I found testing the lastest gplpv drivers just got my attention
again:
Without gplpv drivers, disk throughput is at 27mb/s (r+w).
With gplpv drivers, it reaches 56/45mb/s (r/w).
No surprise, I expected gplpv to be faster than qemu.
These values were measured using PassMark Performance Test 6.0.
What surprises me is the "Disk - Zufallssuche + LS" result:
Witout gplpv it reaches 31mb/s while gplpv drivers only reach 5mb/s.
I've attached the result.
Can someone explain this?
Regards,
Steffen
ÿþ< ! D O C T Y P E H T M L P U B L I C " - / / W 3 C / / D T D H T M L 4 . 0 1 T r a n s i t i o n a l / / E N " >
< h t m l > < h e a d > < M E T A h t t p - e q u i v = " C o n t e n t - T y p e " c o n t e n t = " t e x t / h t m l ; c h a r s e t = U T F - 1 6 " > < t i t l e > V e r g l e i c h s d a t e n - R e s u l t a t e < / t i t l e >
< s t y l e >
h 2 { f o n t - w e i g h t : b o l d ; }
t a b l e { w i d t h : 6 4 0 ; b o r d e r - c o l l a p s e : c o l l a p s e ; m a r g i n - t o p : 1 0 p x ; }
t d . h e a d e r { f o n t - w e i g h t : b o l d ; b o r d e r - s t y l e : r i d g e ; }
t d . t i t l e { w i d t h : 9 % ; f o n t - w e i g h t : b o l d ; b o r d e r - s t y l e : r i d g e ; }
t d . m a x h v a l u e { w i d t h : 9 % ; f o n t - w e i g h t : b o l d ; b o r d e r - s t y l e : r i d g e ; b a c k g r o u n d - c o l o r : # A 0 A 0 A 0 ; }
t d . v a l u e { w i d t h : 9 % ; b o r d e r - s t y l e : r i d g e ; }
t d . a l t v a l u e { w i d t h : 9 % ; b o r d e r - s t y l e : r i d g e ; }
t d . m a x v a l u e { w i d t h : 9 % ; b o r d e r - s t y l e : r i d g e ; b a c k g r o u n d - c o l o r : # E 0 E 0 E 0 ; }
< / s t y l e >
< / h e a d >
< b o d y t e x t = " # 0 0 0 0 0 0 " b g c o l o r = " # f f f f f f " > < h 2 > V e r g l e i c h s d a t e n - R e s u l t a t e < / h 2 > < t a b l e > < t r > < t d c l a s s = " h e a d e r " > T e s t n a m e < / t d > < t d c l a s s = " h e a d e r " > P e r f R e s . g i f < / t d > < t d c l a s s = " m a x h v a l u e " > D i e s e r C o m p u t e r < / t d > < / t r >
< t r > < t d c l a s s = " v a l u e " > < s t r o n g > D i s k - S e q u e n z i e l l l e s e n < / s t r o n g > < / t d > < t d c l a s s = " a l t v a l u e " > 2 7 . 6 4 < / t d > < t d c l a s s = " m a x v a l u e " > 5 6 . 5 7 < / t d > < / t r >
< t r > < t d c l a s s = " v a l u e " > < s t r o n g > D i s k - S e q u e n z i e l l s c h r e i b e n < / s t r o n g > < / t d > < t d c l a s s = " a l t v a l u e " > 2 7 . 6 6 < / t d > < t d c l a s s = " m a x v a l u e " > 4 5 . 8 5 < / t d > < / t r >
< t r > < t d c l a s s = " v a l u e " > < s t r o n g > D i s k - Z u f a l l s s u c h e + L S < / s t r o n g > < / t d > < t d c l a s s = " m a x v a l u e " > 3 1 . 3 7 < / t d > < t d c l a s s = " v a l u e " > 4 . 9 9 < / t d > < / t r >
< t r > < t d c l a s s = " v a l u e " > < s t r o n g > D i s k - M a r k i e r u n g < / s t r o n g > < / t d > < t d c l a s s = " a l t v a l u e " > 3 1 3 . 4 5 < / t d > < t d c l a s s = " m a x v a l u e " > 3 8 8 . 4 5 < / t d > < / t r >
< t r > < t d c l a s s = " v a l u e " > < s t r o n g > P a s s M a r k - B e w e r t u n g < / s t r o n g > < / t d > < t d c l a s s = " a l t v a l u e " > 6 2 . 6 9 < / t d > < t d c l a s s = " m a x v a l u e " > 7 7 . 6 9 < / t d > < / t r >
< / t a b l e >
< h 2 > S y s t e m i n f o r m a t i o n - D i e s e r C o m p u t e r < / h 2 > < d i v c l a s s = " s y s i n f o " > < b > C P U - H e r s t e l l e r : < / b > A u t h e n t i c A M D < b r >
< b > C P U - N u m m e r : < / b > 1 < b r >
< b > C P U - T y p : < / b > A M D A t h l o n ( t m ) 6 4 X 2 D u a l C o r e P r o c e s s o r 6 0 0 0 + < b r >
< b > C P U - D u r c h s a t z : < / b > 3 0 1 6 . 7 M H z < b r >
< b > C a c h e - G r ö ß e : < / b > 1 0 2 4 K B < b r >
< b > B e t r i e b s s y s t e m : < / b > W i n d o w s 2 0 0 3 S e r v e r ( W I N 3 2 ) < b r >
< b > R A M i n s g e s a m t : < / b > 1 0 7 3 2 2 1 6 3 2 B y t e < b r >
< b > R A M v e r f ü g b a r : < / b > 7 4 6 5 0 4 1 9 2 B y t e < b r >
< b > G r a f i k e i n s t e l l u n g e n : < / b > 8 0 0 x 6 0 0 x 2 4 < b r >
< b > G r a f i k t r e i b e r < / b > < b r >
B E S C H R E I B U N G : < b r > C i r r u s L o g i c 5 4 4 6 k o m p a t i b l e G r a f i k k a r t e < b r > H E R S T E L L E R : < b r > C i r r u s L o g i c C o m p a t i b l e < b r > B I O S : < b r > < b r > D A T U M : < b r > 0 5 / 0 5 / 2 4 < b r >
< b > L a u f w e r k s k e n n u n g : < / b > C < b r >
< b > L a u f w e r k k a p a z i t ä t i n s g e s a m t : < / b > 2 0 . 0 G B < b r >
< b > C l u s t e r g r ö ß e : < / b > 4 K B < b r >
< b > D a t e i s y s t e m : < / b > N T F S < b r >
< / d i v > < b r >
< d i v c l a s s = " f o o t e r " > P a s s M a r k ( T M ) P e r f o r m a n c e T e s t V 6 . 0 ( < a h r e f = " h t t p : / / w w w . p a s s m a r k . c o m / g e r m a n / " > h t t p : / / w w w . p a s s m a r k . c o m / g e r m a n / < / a > ) < b r >
R e s u l t a t e e r s t e l l t a u f : D i e n s t a g , 2 6 . A u g u s t 2 0 0 8 < / d i v > < / b o d y > < / h t m l >
smime.p7s
Description: S/MIME cryptographic signature
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