Differences between version 10 and previous revision of KernelCompilationTimes.
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| Newer page: | version 10 | Last edited on Wednesday, July 23, 2003 5:50:41 pm | by DanielLawson | Revert |
| Older page: | version 1 | Last edited on Sunday, October 13, 2002 12:51:25 am | by MattBrown | Revert |
@@ -1,7 +1,21 @@
I decided that it would be interesting to compile a page giving an idea of how long it takes to compile a kernel on various machines. That way if you have a machine that you need to compile a kernel on, you can look at this page and decide how many cups of coffee to make.
Both sets of times below are compiling a standard linux-2.4.19 kernel. Configured with the defualts for everything.
+
+Here's how I do this test. Note that its important that you perform a compile as soon as you untar the source, so that the source is still in the disk cache. Or we could all reboot the machine between untarring and compiling, but, uh, no.
+
+(In /usr/src, with the 2.4.19 source downloaded already...)
+
+ tar zxvf linux-2.4.19.tar.gz
+ cd linux-2.4.19
+ make oldconfig
+ /usr/bin/time -p -o /tmp/dep.time make dep
+ /usr/bin/time -p -o /tmp/bzImage.time make -j 2 bzImage modules
+
+If you have a machine with more than one processor, you can use make -j n .... where n is the number of cpus + 1
+
+Note: the /usr/bin/time -p -o ... etc is to save the output from time into the specified file, and use the same format as bash's built in 'time'. *sigh*
! PII-300, 96MB Ram
vendor_id : !GenuineIntel
cpu family : 6
@@ -19,13 +33,8 @@
make bzImage
real 15m35.728s
user 13m59.330s
sys 0m44.490s
-
- make modules
- real 0m21.513s
- user 0m12.110s
- sys 0m0.950s
! PII800, 384MB Ram
vendor_id : !GenuineIntel
cpu family : 6
@@ -44,8 +53,67 @@
real 6m28.837s
user 5m29.810s
sys 0m30.400s
-
make modules
- real 0m7.800s
- user 0m5
.110s
- sys 0m0
.520s
+! Dual AMD AthlonMP 1800+, 1GB RAM
+ processor :
+ vendor_id : AuthenticAMD
+ cpu family : 6
+ model : 6
+ model name : AMD Athlon(TM) MP 1800+
+ stepping : 2
+ cpu MHz : 1533.431
+ cache size : 256 KB
+
+ processor : 1
+ vendor_id : AuthenticAMD
+ cpu family : 6
+ model : 6
+ model name : AMD Athlon(TM) MP 1800+
+ stepping : 2
+ cpu MHz : 1533.431
+ cache size : 256 KB
+
+
make dep
+ real 0m25.51s
+ user 0m11.35s
+ sys 0m2.16s
+
+ make -j 2 bzImage
modules
+ real 1m31.36s
+ user 2m32.80s
+ sys 0m13.50s
+
+ make -j 3 bzImage modules
+ real 1m41.04
+ user 2m43.11
+ sys 0m17.25
+
+! Dual Pentium 3 1GHz, 512 MB RAM
+ processor : 1
+ vendor_id : !GenuineIntel
+ cpu family : 6
+ model : 8
+ model name : Pentium III (Coppermine)
+ stepping : 10
+ cpu MHz : 999.551
+ cache size : 256 KB
+
+ make dep
+ real 1m3.073s
+ user 0m55.750s
+ sys
0m7.610s
+
+ make bzImage
+ real 3m46.111s
+ user 3m35.930s
+ sys 0m13.440s
+
+ make -j 2 bzImage modules
+ real 2m3.80
+ user 3m47.93
+ sys 0m14.91
+
+ make -j 3 bzImage modules
+ real 2m5.08
+ user 3m49
.75
+ sys 0m15
.03
