Flush-Cache/Page-Lock/Flush-TLB说明 查看原文 how TLB work 之前遇到了linux randomkernelpanic的问题,原因是TLB的entry对应的page其实已经释放。 VIP是独立的ko,create resource是通过VA接口走到我们ko... cahche不同的是,硬件不维护TLB的coherence,一旦软件修改了pagetable,软件也要进程TLBinvalidate操作,以维护...
我发现flush_dcache_page()在x86架构上的linux内核中没有执行任何操作,如下所示 包括/asm-generic/cacheflush.h Line17#defineflush_dcache_page(page) do {} while (0) Run Code Online (Sandbox Code Playgroud) 我认为 x86 arch 上有缓存刷新指令“CLFLUSH”,它可以用于此页面刷新。 然而,flush_dcache_p...
Maybe here? w3-total-cache-fixed/CacheFlush_Locally.php Lines 165 to 173 in313db33 /** * Purges/Flushes page contents - page cache, varnish and cdn cache * When global changes affect whole content but not internal data structures */ ...
When setting up a new site, sometimes when going to the correct web address, you still get a default CGI page from the server. This can be due to several things, but if everything else seems to be in order, it may be the page cache. If your clear your browser cache, and you are...
In migration, a new page should be cache flushed before set_pte() in some archs which have virtually-tagged cache. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Hugh Dickins <...
Ways to flush page cache without reboot?Ask Question Asked 3 years, 9 months ago Modified 3 years, 9 months ago Viewed 291 times 0 I am running a benchmark on Disk IO + data compression, and the benchmark to be accurate has to include time from disk fetch. The issue being that onc...
实际上我们使用OutputStream.write()方法只是将数据写入操作系统中的Page Cache中,至于操作系统何时将数据写入到磁盘中,取决于操作系统下面参数的配置: $ sudo sysctl -a | grep "dirty" vm.dirty_background_bytes = 0 vm.dirty_background_ratio = 10 ...
ERROR: "flush_dcache_page" [fs/jffs2/jffs2.ko] undefined! make[3]: *** [__modpost] Error 1 make[2]: *** [modules] Error 2 make[2]: *** Waiting for unfinished jobs... UIMAGE arch/nios2/boot/vmImage Image Name: Linux-2.6.30-00494-g84a224b Created: ...
虚拟文件系统的page cache(segments) fsync到磁盘 删除旧的translog文件,因此此时内存中的segments已经写入到磁盘中,就不需要translog来保障数据安全了 flush之后的状态如下所示: es有几个条件来决定是否flush到磁盘,不同版本的es参数有所不同,大家可以参考es对应版本的文档来查看这几个参数:es translog,这里介绍下1.7...
Flushing your page builder’s cache forces all cached assets to be regenerated with the correct URL and up-to-date info.You may also need to purge Pressable’s edge cache (which provides a CDN + page caching) and/or flush the object cache. This step should be done after the page ...