Date: Mon, 22 Jan 1996 22:12:10 -0500 (EST) From: "matthew c. mead" <mmead@Glock.COM> To: hackers@freebsd.org Subject: pentium GCC compiled kernel Message-ID: <199601230312.WAA04347@Glock.COM>
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I had to compile some of the files with -m486 or regular old gcc 2.6.3, but
did manage to get a mostly pentium optimized kernel put together (using -O6) and
it seems to be working just fine. I used lmbench with my kernel built with
gcc 2.6.3, installed the new mostly pentium optimized kernel, and reran
lmbench. The results show a little bit of improvement in some areas, and for
some reason, some of the results got a little worse, while yet more stayed the
same. If anyone's interested, here are the results. The first line for
Glock.COM is the standard kernel I use, and the second is the pentium gcc
optimized kernel.
-matt
===============================================================================
L M B E N C H 1 . 0 S U M M A R Y
------------------------------------
Processor, Processes - times in microseconds
--------------------------------------------
Host OS Mhz Null Null Simple /bin/sh Mmap 2-proc 8-proc
Syscall Process Process Process lat ctxsw ctxsw
--------- ------------- ---- ------- ------- ------- ------- ---- ------ ------
rs6000 AIX 2 62 23 2.0K 7.3K 23K 3817 20 32
Glock.COM FreeBSD 2.1.0 90 11 3.5K 17.2K 27K 153 31 39
Glock.COM FreeBSD 2.1.0 90 9 3.5K 16.2K 25K 157 34 38
mako HP-UX A.09.01 65 22 2.7K 5.6K 17K 155 25 29
seahorse HP-UX A.09.03 99 14 3.6K 10.1K 18K 116 47 55
snake HP-UX A.09.01 66 21 2.6K 5.7K 17K 156 40 38
IP22 IRIX 5.3 198 11 3.1K 8.0K 19K 260 66 94
pentium Linux 1.1.54 91 3 3.3K 15.4K 49K 33 25 42
alpha OSF1 V2.1 182 13 4.8K 16.1K 43K 172 54 85
ss20.50 SunOS 5.4 50 9 10.7K 57.5K 113K 130 37 52
ss20.61 SunOS 5.4 61 7 8.0K 45.8K 87K 104 0 0
*Local* Communication latencies in microseconds
-----------------------------------------------
Host OS Pipe UDP RPC/ TCP RPC/
UDP TCP
--------- ------------- ------- ------- ------- ------- -------
rs6000 AIX 2 143 385 820 498 1054
Glock.COM FreeBSD 2.1.0 141 298 499 352 616
Glock.COM FreeBSD 2.1.0 139 285 479 335 656
mako HP-UX A.09.01 288 412 1302 374 1156
seahorse HP-UX A.09.03 193 244 832 262 812
snake HP-UX A.09.01 296 403 1195 367 1142
IP22 IRIX 5.3 131 313 671 278 641
pentium Linux 1.1.54 157 658 1030 1164 1591
alpha OSF1 V2.1 185 404 718 428 851
ss20.50 SunOS 5.4 194 590 935 560 1196
ss20.61 SunOS 5.4 150 414 622 335 784
*Local* Communication bandwidths in megabytes/second
----------------------------------------------------
Host OS Pipe TCP File Mmap Bcopy Bcopy Mem Mem
reread reread (libc) (hand) read write
--------- ------------- ---- ---- ------ ------ ------ ------ ---- -----
rs6000 AIX 2 34 6.0 76.1 63.0 81 120 99 169
Glock.COM FreeBSD 2.1.0 15 0.2 22.8 40.6 32 30 53 70
Glock.COM FreeBSD 2.1.0 16 0.2 22.7 41.2 33 31 54 73
mako HP-UX A.09.01 27 18.7 34.4 22.5 22 24 45 39
seahorse HP-UX A.09.03 38 35.2 44.7 32.1 25 31 49 52
snake HP-UX A.09.01 19 17.8 34.4 22.3 22 24 45 39
IP22 IRIX 5.3 34 22.1 32.3 43.7 32 31 69 66
pentium Linux 1.1.54 13 2.4 9.8 4.7 18 18 48 32
alpha OSF1 V2.1 32 12.1 39.4 22.7 39 41 76 78
ss20.50 SunOS 5.4 11 11.0 22.9 30.0 26 31 80 62
ss20.61 SunOS 5.4 24 19.5 31.0 30.7 23 24 59 40
Memory latencies in nanoseconds
(WARNING - may not be correct, check graphs)
--------------------------------------------
Host OS Mhz L1 $ L2 $ Main mem TLB Guesses
--------- ------------- --- ---- ---- -------- --- -------
rs6000 AIX 2 61 15 229 247 776 No L2 cache?
Glock.COM FreeBSD 2.1.0 89 11 138 202 528
Glock.COM FreeBSD 2.1.0 89 11 129 202 527
mako HP-UX A.09.01 65 - - - - Bad mhz?
seahorse HP-UX A.09.03 98 10 10 393 481 No L1 cache?
snake HP-UX A.09.01 65 15 15 378 1051 No L1 cache?
IP22 IRIX 5.3 197 10 76 1018 1129
pentium Linux 1.1.54 90 11 294 439 1254
alpha OSF1 V2.1 182 10 56 321 452
ss20.50 SunOS 5.4 49 20 284 291 575 No L2 cache?
ss20.61 SunOS 5.4 60 16 115 816 961
L M B E N C H 1 . 0 S U M M A R Y
------------------------------------
Comparison to best of the breed
-------------------------------
(Best numbers are starred, i.e., *123)
Processor, Processes - factor slower than the best
--------------------------------------------------
Host OS Mhz Null Null Simple /bin/sh Mmap 2-proc 8-proc
Syscall Process Process Process lat ctxsw ctxsw
--------- ------------- ---- ------- ------- ------- ------- ---- ------ ------
rs6000 AIX 2 62 7.7 *1.9K 1.3 1.4 116 *20 1.1
Glock.COM FreeBSD 2.1.0 90 3.7 1.8 3.1 1.6 4.6 1.6 1.3
Glock.COM FreeBSD 2.1.0 90 3.0 1.7 2.9 1.5 4.8 1.7 1.3
mako HP-UX A.09.01 65 7.3 1.4 *5.5K 1.0 4.7 1.2 *29
seahorse HP-UX A.09.03 99 4.7 1.8 1.8 1.1 3.5 2.4 1.9
snake HP-UX A.09.01 66 7.0 1.3 1.0 *16.4K 4.7 2.0 1.3
IP22 IRIX 5.3 198 3.7 1.6 1.4 1.1 7.9 3.3 3.2
pentium Linux 1.1.54 91 *3 1.7 2.7 3.0 *33 1.2 1.4
alpha OSF1 V2.1 182 4.3 2.4 2.9 2.6 5.2 2.7 2.9
ss20.50 SunOS 5.4 50 3.0 5.4 10 6.7 3.9 1.9 1.8
ss20.61 SunOS 5.4 61 2.3 4.0 8.2 5.2 3.2 ??? ???
*Local* Communication latencies - factor slower than the best
-------------------------------------------------------------
Host OS Pipe UDP RPC/ TCP RPC/
UDP TCP
--------- ------------- ------- ------- ------- ------- -------
rs6000 AIX 2 1.1 1.6 1.7 1.9 1.7
Glock.COM FreeBSD 2.1.0 1.1 1.2 1.0 1.3 *616
Glock.COM FreeBSD 2.1.0 1.1 1.2 *479 1.3 1.1
mako HP-UX A.09.01 2.2 1.7 2.7 1.4 1.9
seahorse HP-UX A.09.03 1.5 *244 1.7 *262 1.3
snake HP-UX A.09.01 2.3 1.7 2.5 1.4 1.9
IP22 IRIX 5.3 *131 1.3 1.4 1.1 1.0
pentium Linux 1.1.54 1.2 2.7 2.2 4.4 2.6
alpha OSF1 V2.1 1.4 1.7 1.5 1.6 1.4
ss20.50 SunOS 5.4 1.5 2.4 2.0 2.1 1.9
ss20.61 SunOS 5.4 1.1 1.7 1.3 1.3 1.3
*Local* Communication bandwidths - percentage of the best
---------------------------------------------------------
Host OS Pipe TCP File Mmap Bcopy Bcopy Mem Mem
reread reread (libc) (hand) read write
--------- ------------- ---- ---- ------ ------ ------ ------ ---- -----
rs6000 AIX 2 89% 17% *76 *63 *80 *119 *98 *168
Glock.COM FreeBSD 2.1.0 40% 0% 29% 64% 40% 24% 53% 41%
Glock.COM FreeBSD 2.1.0 42% 0% 29% 65% 41% 25% 54% 43%
mako HP-UX A.09.01 69% 52% 45% 35% 27% 19% 45% 23%
seahorse HP-UX A.09.03 *38 *35 58% 50% 31% 25% 49% 30%
snake HP-UX A.09.01 49% 50% 45% 35% 27% 19% 45% 23%
IP22 IRIX 5.3 88% 62% 42% 69% 39% 25% 69% 38%
pentium Linux 1.1.54 32% 6% 12% 7% 22% 14% 48% 19%
alpha OSF1 V2.1 83% 34% 51% 36% 48% 33% 76% 46%
ss20.50 SunOS 5.4 29% 31% 30% 47% 31% 25% 80% 36%
ss20.61 SunOS 5.4 62% 55% 40% 48% 28% 19% 59% 23%
Memory latencies in nanoseconds - factor slower than the best
(WARNING - may not be correct, check graphs)
-------------------------------------------------------------
Host OS Mhz L1 $ L2 $ Main mem TLB Guesses
--------- ------------- --- ---- ---- -------- --- -------
rs6000 AIX 2 61 1.5 ??? 1.2 1.7 No L2 cache?
Glock.COM FreeBSD 2.1.0 89 1.1 14 *202 1.2
Glock.COM FreeBSD 2.1.0 89 1.1 13 *202 1.2
mako HP-UX A.09.01 65 - - - - Bad mhz?
seahorse HP-UX A.09.03 98 ??? *10 1.9 1.1 No L1 cache?
snake HP-UX A.09.01 65 ??? 1.5 1.9 2.3 No L1 cache?
IP22 IRIX 5.3 197 *10 7.6 5.0 2.5
pentium Linux 1.1.54 90 1.1 29 2.2 2.8
alpha OSF1 V2.1 182 *10 5.6 1.6 *452
ss20.50 SunOS 5.4 49 2.0 ??? 1.4 1.3 No L2 cache?
ss20.61 SunOS 5.4 60 1.6 12 4.0 2.1
===============================================================================
--
Matthew C. Mead
mmead@Glock.COM
http://www.Glock.COM/~mmead/
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