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Re: [User-mode-linux-user] lmbench numbers?
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From: lars b. <la...@no...> - 2000-03-15 10:41:46
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Here are some results. The benchmark crashed the kernel before finishing
the context switch and memory latency measurements.
"i686-linu" is Linux 2.2.5 running on hardware, and "um-linuxo" is
user-mode Linux 2.3.51 on the same machine. I have edited the results
slightly for clarity.
L M B E N C H 1 . 9 S U M M A R Y
------------------------------------
(Alpha software, do not distribute)
Processor, Processes - times in microseconds - smaller is better
----------------------------------------------------------------
Host OS Mhz null null open selct sig sig fork exec sh
call I/O stat clos inst hndl proc proc proc
--------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ----
i686-linu Linux 2.2.5-2 499 0.6 0.9 4 5 0.04K 1.9 3 0.3K 1K 6K
um-linuxo Linux 2.3.51- 499 95.1 159 126 230 0.14K 98.5 31 9.2K 19K 56K
Context switching - times in microseconds - smaller is better
-------------------------------------------------------------
Host OS 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K 16p/64K
ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw
--------- ------------- ----- ------ ------ ------ ------ ------- -------
i686-linu Linux 2.2.5-2 1 14 43 15 128 19 157
um-linuxo Linux 2.3.51- ( no results due to crash )
*Local* Communication latencies in microseconds - smaller is better
-------------------------------------------------------------------
Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP
ctxsw UNIX UDP TCP conn
--------- ------------- ----- ----- ---- ----- ----- ----- ----- ----
i686-linu Linux 2.2.5-2 1 6 13 ( no results because I
um-linuxo Linux 2.3.51- 988 1136 didn't measure networking )
File & VM system latencies in microseconds - smaller is better
--------------------------------------------------------------
Host OS 0K File 10K File Mmap Prot Page
Create Delete Create Delete Latency Fault Fault
--------- ------------- ------ ------ ------ ------ ------- ----- -----
i686-linu Linux 2.2.5-2 14 1 26 2 22126 1 0.6K
um-linuxo Linux 2.3.51- 48 15 60 18 6635 0.2K
*Local* Communication bandwidths in MB/s - bigger is better
-----------------------------------------------------------
Host OS Pipe AF TCP File Mmap Bcopy Bcopy Mem Mem
UNIX reread reread (libc) (hand) read write
--------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- -----
i686-linu Linux 2.2.5-2 356 121 -1 176 354 150 146 355 194
um-linuxo Linux 2.3.51- -1 -1 -1 -1 -1 -1 -1 -1
( these are completely bogous )
Memory latencies in nanoseconds - smaller is better
(WARNING - may not be correct, check graphs)
---------------------------------------------------
Host OS Mhz L1 $ L2 $ Main mem Guesses
--------- ------------- --- ---- ---- -------- -------
i686-linu Linux 2.2.5-2 499 6 46 151
um-linuxo Linux 2.3.51- 499 ( no results due to crash )
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