On Wed, Jul 27, 2016 at 03:58:16PM -0500, Aníbal Limón wrote: > > > On 07/27/2016 03:06 PM, Sullivan, California L wrote: > > Adding the debug-kernel fragment to the printk fragment was probably a > > mistake on my part. I don't see anything that requires it. > > > > I'm also seeing another issue: TTY_PRINTK depends on EXPERT, which is > > only enabled on the developer kernel by default, so you currently won't > > be getting that option. From there, if we were to enable EXPERT, > > DEBUG_KERNEL then gets selected automatically and we essentially end up > > where we started and have the build time regression. > > > > Stuff to think about on my end I suppose. In the mean time I +1 removing > > the debug-kernel include from printk.scc. > > I agree, > > alimon
The fix has been merged to yocto-4.4 branch of yocto-kernel-cache: https://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-cache/commit/?h=yocto-4.4&id=d3cc76c3cb20247b16c16b2367decf08b5fb90fa And included into last kernel update: http://lists.openembedded.org/pipermail/openembedded-core/2016-July/124466.html With the fix applied kernel build time decreased by 22.84%: Build Configuration: BB_VERSION = "1.31.0" BUILD_SYS = "x86_64-linux" NATIVELSBSTRING = "openSUSE-13.2" TARGET_SYS = "i586-poky-linux" MACHINE = "qemux86" DISTRO = "poky" DISTRO_VERSION = "2.1+snapshot-20160728" TUNE_FEATURES = "m32 i586" TARGET_FPU = "" meta meta-poky meta-yocto-bsp = "master:039f47ad197a9a53109c9f3deadd9c35e62c056d" before the fix: Command being timed: "bitbake virtual/kernel" User time (seconds): 1367.06 System time (seconds): 162.06 Percent of CPU this job got: 372% Elapsed (wall clock) time (h:mm:ss or m:ss): 6:50.56 Average shared text size (kbytes): 0 Average unshared data size (kbytes): 0 Average stack size (kbytes): 0 Average total size (kbytes): 0 Maximum resident set size (kbytes): 627120 Average resident set size (kbytes): 0 Major (requiring I/O) page faults: 1292 Minor (reclaiming a frame) page faults: 61097551 Voluntary context switches: 885976 Involuntary context switches: 715312 Swaps: 0 File system inputs: 1024568 File system outputs: 13316088 Socket messages sent: 0 Socket messages received: 0 Signals delivered: 0 Page size (bytes): 4096 Exit status: 0 after the fix: Command being timed: "bitbake virtual/kernel" User time (seconds): 1050.97 System time (seconds): 128.84 Percent of CPU this job got: 434% Elapsed (wall clock) time (h:mm:ss or m:ss): 4:31.35 Average shared text size (kbytes): 0 Average unshared data size (kbytes): 0 Average stack size (kbytes): 0 Average total size (kbytes): 0 Maximum resident set size (kbytes): 387148 Average resident set size (kbytes): 0 Major (requiring I/O) page faults: 1264 Minor (reclaiming a frame) page faults: 52467379 Voluntary context switches: 589830 Involuntary context switches: 457987 Swaps: 0 File system inputs: 1107424 File system outputs: 3363464 Socket messages sent: 0 Socket messages received: 0 Signals delivered: 0 Page size (bytes): 4096 Exit status: 0 And consumed disk space decreased by 89.62%: before the fix: $ du -sh tmp/work/qemux86-poky-linux/linux-yocto/4.4.14+gitAUTOINC+4800a400d5_8361321fec-r0/deploy-linux-yocto/ 106M after the fix: $ du -sh tmp/work/qemux86-poky-linux/linux-yocto/4.4.14+gitAUTOINC+86bf91f444_8361321fec-r0/deploy-linux-yocto/ 11M -- Regards, Ed -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
