Embedded Linux Conference 2014 day 3 #lfelc
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tetsu_koba
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@pdp7@mastodon.social 🇵🇸
@pdp7
Exellent talk by @mrybczynska on porting Linux to 250-core arch: http://t.co/qRQTbQG6Oh via @linuxfoundation #lfelc http://t.co/EniWN0dFk9
2014-05-02 07:56:23
拡大
koba
@tetsu_koba
まとめを更新しました。「Embedded Linux Conference 2014 day 3 #lfelc」 http://t.co/t2ysG0BssN
2014-05-02 07:57:32
koba
@tetsu_koba
#lfelc Especially since Jelly Bean 4.1 "project Butter" which improved graphics performance by adding memory. and Screen size become bigger
2014-05-02 08:06:00
koba
@tetsu_koba
#lfelc KitKat 4.4 introduced "project Svelte": Android on devices with 512MiB RAM
2014-05-02 08:07:08
koba
@tetsu_koba
#lfelc Vss=virtual size, Rss=resident set size, Uss=unique set size, Pss=proportional set size
2014-05-02 08:11:08
koba
@tetsu_koba
#lfelc oom_adj: -16(important process) to 15(unimportant process) killing process which is highest oom_adj
2014-05-02 08:20:15
koba
@tetsu_koba
#lfelc dump sys memento at Nexus 10 shows Lost RAM -83665 kB (negative ??)
2014-05-02 08:29:00
koba
@tetsu_koba
#lfelc GPU memory mapped in some process's memory. That's why negative Lost RAM.
2014-05-02 08:30:31
koba
@tetsu_koba
#lfelc KitKat has a global tuning parameter for low RAM. ro.config.low_ram=true
2014-05-02 08:39:05
koba
@tetsu_koba
#lfelc Dalvik JIT code cache. dalvik.vm.jit.codecachesize=0 disable JIT completely.
2014-05-02 08:40:48
koba
@tetsu_koba
#lfelc Direct reclaim happens when a process tries to allocate memory and there are no free pages. Direct reclaim may freeze UI thread!
2014-05-02 08:45:22
koba
@tetsu_koba
#lfelc /proc/sys/vm/extra_free_kbytes -- added by Google to Linux 3.4 to modify kswap behaivior
2014-05-02 08:47:11