Chris Friesen <cfriesen@nortelnetworks.com> wrote:
>> The ones that stand out are:
>> --fork/exec (due to rmap I assume?)
>> --mmap (also due to rmap?)
On Mon, Mar 24, 2003 at 08:39:34AM +0000, Linus Torvalds wrote:
> Yes. You could try the objrmap patches, they are supposed to help. They
> may be in -mm, I'm not sure.
I recently asked Randy Hron which 2.5.x patches made the biggest
difference in the tests he's done. He pasted the following:
<hrandoz:#kernelnewbies> null null
+ open signal signal fork execve /bin/sh
<hrandoz:#kernelnewbies> kernel call I/O
+stat fstat close install handle process process process
<hrandoz:#kernelnewbies> 2.5.65 0.66 0.96298 3
+.60 1.48 5.31 1.92 3.89 1279 3233 13703
<hrandoz:#kernelnewbies> 2.5.65-mm1 0.63 1.04114 3
+.65 1.57 6.39 2.29 3.92 1370 3621 13985
<hrandoz:#kernelnewbies> 2.5.65-mm2 0.65 0.98654 3
+.64 1.46 6.88 1.91 3.94 1511 3676 13502
<hrandoz:#kernelnewbies> 2.5.65-mm2-anobjrmap 0.66 0.96061 3
+.82 1.45 5.38 1.90 4.68 1414 3497 13169
<hrandoz:#kernelnewbies> 2.2.23 0.42 0.80455 4
+.76 1.24 5.77 1.43 2.74 788 2303 30829
<hrandoz:#kernelnewbies> 2.4.21-pre4aa3 0.62 0.72201 3
+.44 1.02 5.32 1.41 3.43 848 2114 10117
<hrandoz:#kernelnewbies> 2.4.21-pre5 0.62 0.75284 3
+.18 1.02 5.35 1.41 3.25 927 2559 11884
<hrandoz:#kernelnewbies> 2.4.21-pre5-akpm 0.61 0.73119 3
+.32 1.02 5.28 1.41 3.16 865 2421 11636
<hrandoz:#kernelnewbies> 2.5.63-mjb1 0.66 1.12795 4
+.01 1.64 6.66 1.92 4.49 1125 2793 12475
<hrandoz:#kernelnewbies> 2.5.62-mjb2 0.64 1.09703 4
+.12 1.66 5.77 1.89 4.05 1128 2888 12669
<hrandoz:#kernelnewbies> 2.5.63-mjb2 0.67 1.03824 4
+.12 1.66 5.87 1.90 4.39 1144 2985 12650
<hrandoz:#kernelnewbies> 2.5.62-mm3 0.62 0.95155 4
+.72 1.42 7.55 1.90 3.92 1164 3073 13101
-- wli
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This archive was generated by hypermail 2b29 : Mon Mar 31 2003 - 22:00:15 EST