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  • HUGE

    2019-10-24 17:25:51
    HUGE
  • Huge

    2020-07-15 14:00:10
  • HugeInteger

    2018-05-09 18:51:51
    创建一个大整数类HugeInteger,该类用一个40个元素的数组来存放一个大整数(最多不超过40位)。 构造函数原型: HugeInteger(String); (1)定义几个大整数算术运算的成员函数,包括input、output、add和sub, add, ...
  • Huge pages

    2021-01-09 02:46:42
    <div><p>In my case, Huge page is available but unenable. I hear someone say huge enable wI'll double hashrate, does it right? If yes how do i do it? Thanks!</p><p>该提问来源于开源项目:xmrig...
  • Huge Pages

    2020-12-29 10:01:49
    <div><p>What is required to get support for huge pages? Is it just a matter of passing the correct flags to mmap with some checks around alignment and size etc?</p><p>该提问来源于开源项目:...
  • HugePages

    2020-11-28 10:48:56
    <div><h1>Enhancement Description: HugePages to GA <ul><li>Primary contact (assignee): </li><li>Responsible SIGs: sig-node</li><li>Design proposal link (community repo): ...
  • HUGE PROBLEM

    2020-12-08 18:20:12
    <div><p>OK so I have a huge problem iphone 7 is not supported lol jk. Ok real problem, there is no where to donate to such a wonderful and dedicated man.</p><p>该提问来源于开源项目:kpwn/yalu102...
  • Huge lagspike

    2020-12-09 03:33:56
    s a huge lagspike for the MCPE client when you join the game(I'm not sure if it's an issue related to Dragonet but I think it is).</p><p>该提问来源于开源项目:DragonetMC/Dragonet-Legacy...
  • Huge log

    2021-01-07 02:26:28
    <div><p>The container seems to generate huge amount of logs! /var/lib/docker/containers//-json.log And since docker has problems with logging / memory usage it takes it(docker) all down. Is there a ...
  • Huge lag

    2020-12-25 17:54:50
    After I removed the JavaScript-Completions and installed back, there is a huge lag caused by something in JavaScript-Completions plugin between each letter I enterd, I can't write a whole word....
  • Huge refactoring

    2021-01-06 21:23:25
    <div><p>Do not create huge strings Let SimpleTypedList inherit from Array Let Row inherit from SimpleTypedList Optimized sanitizing Optimized validation And more.. <p>The parentheses around the <&...
  • huge drift

    2020-12-03 01:15:31
    in particular with Yaw-pitch-roll script i have a huge drift, more o less a degree per second!!!! what's wrong? thanks a lot in advance!</p><p>该提问来源于开源项目:mjs513/FreeIMU-Updates...
  • After setting up hugepages according to quick start: the output of /proc/meminfo: <code>HugePages_Total: 1024 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB</code></p> <p>...
  • 对于内存较大的Oracle数据库服务器,配置HugePage是很有必要的,下面是配置Huge的步骤:对于内存较大的Oracle数据库服务器,配置HugePage是很有必要的,下面是配置Huge的步骤:我的环境:OS:CentOS release 6.4 ...

    对于内存较大的Oracle数据库服务器,配置HugePage是很有必要的,下面是配置Huge的步骤:

    对于内存较大的Oracle数据库服务器,配置HugePage是很有必要的,下面是配置Huge的步骤:

    我的环境:

    OS:CentOS release 6.4 (Final)

    Oracle:11.2.0.4 RAC

    Oracle 大内存需要配置HugePage

    在Oracle 11.2.0.3.0上开启大页(HugePages)的详细解析

    Linux HugePages及MySQL 大页配置

    Linux HugePage 特性

    1. 设置memlock

    编辑/etc/security/limits.conf

    增加:

    * Soft memlock 稍小于RAM值

    * hard memlock 稍小于RAM值

    Memlock值大于sga没关系的,所以我们可以设置这个值在我们想要的SGA size和物理内存size之间,这个值得单位是kb。

    [root@node1 ~]# grep -i memtot /proc/meminfo

    MemTotal: 132250576 kB

    我们物理内存大小126G,因此我可以设置memlock为100G。

    在2个节点设置:

    [root@node1 ~]# tail -2 /etc/security/limits.conf

    * soft memlock 104857600

    * hard memlock 104857600

    设置完毕后,以Oracle用户登录验证:

    node2-> ulimit -l

    104857600

    2. 禁用AMM特性:

    禁用AMM特性需要将memory_max_target, memory_max_target2个参数重置,而不仅仅是设置为0,最好的办法是创建一个pfile,在pfile中将这2个参数删除,再根据这个pfile创建spfile.

    主要内存参数设置为:

    node1->

    node1-> grep target /tmp/init.ora

    *.pga_aggregate_target=1572864000

    *.sga_target=64424509440

    SQL> create spfile from pfile='/tmp/init.ora';

    File created.

    SQL> startup force

    ORA-27102: out of memory

    Linux-x86_64 Error: 28: No space left on device

    Additional information: -134217728

    Additional information: 1

    SQL>

    出现这个报错是因为shmall设置的太小。

    Shmall表示共享内存的总大小,单位为pagesize的大小。

    根据我的配置,最大能支持8G的SGA:

    node1-> getconf PAGE_SIZE

    4096

    node1-> cat /proc/sys/kernel/shmall

    2097152

    修改shmall并重新启动数据库,修改的方法很简单,编辑/etc/sysctl.conf:

    kernel.shmall= 16252928

    即可。

    修改完毕kernel.shmall,此时可以重启数据库。

    SQL> startup nomount pfile='/tmp/init.ora';

    ORACLE instance started.

    Total System Global Area 6.4137E+10 bytes

    Fixed Size 2269072 bytes

    Variable Size 6979321968 bytes

    Database Buffers 5.7043E+10 bytes

    Redo Buffers 112762880 bytes

    SQL>

    SQL>

    DB启动后重新创建spfile:

    SQL> create spfile='+OCR/sszgdb/spfilesszgdb.ora' from pfile='/tmp/init.ora';

    File created.

    SQL>

    3. 根据Oracle的脚本计算hugepage大小(计算时要确保Oracle已经启动),也可自己计算:

    Press Enter to proceed...

    Recommended setting: vm.nr_hugepages = 30739

    node1->

    4. 根据脚本的计算值在2个节点编辑/etc/sysctl.conf

    加入vm.nr_hugepages = 30739

    [root@node2 ~]# grep -i huge /proc/meminfo

    AnonHugePages: 602112 kB

    HugePages_Total: 30739

    HugePages_Free: 30739

    HugePages_Rsvd: 0

    HugePages_Surp: 0

    Hugepagesize: 2048 kB停止数据库实例

    5. 重启服务器,一般重启服务器之后DB也自动启动了。服务器和DB重启后可以通过以下命令验证大页的使用情况:

    grep -i Hugepages /proc/meminfo

    此时查看Oracle的alert日志,也可以发现:

    Starting ORACLE instance (normal)

    ************************ Large Pages Information *******************

    Per process system memlock (soft) limit = UNLIMITED

    Total Shared Global Region in Large Pages = 58 GB (96%)

    Large Pages used by this instance: 29761 (58 GB)

    Large Pages unused system wide = 24 (48 MB)

    Large Pages configured system wide = 30739 (60 GB)

    Large Page size = 2048 KB

    RECOMMENDATION:

    Total System Global Area size is 60 GB. For optimal performance,

    prior to the next instance restart:

    1. Increase the number of unused large pages by

    at least 936 (page size 2048 KB, total size 1872 MB) system wide to

    get 100% of the System Global Area allocated with large pages

    可以发现sga并没有全部放在大页里,这样可能对性能带来负面影响,,Oracle建议我们再加入936个大页,可见Oracle的大页脚本计算并不准确,我们需要增加大页数量,并设置参数Use_large_pages=only,该参数确保Oracle的共享内存全部使用大页。

    更多详情见请继续阅读下一页的精彩内容:

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    f68f2add0b68e4f9810432fce46917b7.png

    本文原创发布php中文网,转载请注明出处,感谢您的尊重!

    展开全文
  • 展开全部huge是巨大;极多的;程度高的;非常成功32313133353236313431303231363533e4b893e5b19e31333431373937的意思。其音标为英[hjuːdʒ] 美[hjuːdʒ]1、huge的基本意思是“巨大的,庞大的”,修饰具体名词时多...

    展开全部

    huge是巨大;极多的;程度高的;非常成功32313133353236313431303231363533e4b893e5b19e31333431373937的意思。其音标为英[hjuːdʒ]    美[hjuːdʒ]

    1、huge的基本意思是“巨大的,庞大的”,修饰具体名词时多指体积或数量大,修饰抽象名词时指程度大。

    2、huge还可用于a huge amount of, a huge pile of, a huge sum of等短语中,意为“大量的”。

    3、huge在句中可用作定语,也可用作表语。

    99514ac11ddaab106d3cb7a3dcd4982b.png

    扩展资料

    huge的近义词

    一、enormous 英 [ɪ'nɔːməs]     美 [ɪ'nɔːrməs]

    adj. 巨大的;庞大的

    示例:Long ago enormous animals lived on the earth.

    很久以前,地球上生活着巨大的动物。

    二、gigantic 英 [dʒaɪ'ɡæntɪk]     美 [dʒaɪ'ɡæntɪk]

    adj. 巨大的

    示例:City is abstracted into several gigantic buildings.

    城市,被抽象化为几个巨大的建筑物。

    展开全文
  • HUGE HUGE PROBLEM

    2020-11-29 07:13:24
    <div><p>I have 100 dollars with your name on it help where do I send it???</p><p>该提问来源于开源项目:kpwn/yalu102</p></div>
  • hugepage

    2020-08-10 16:20:59
    在Linux中配置hugepage可以提高oracle的性能,减少oracle sga的页交换,类似于aix中的lagepage。 为什么 使用大页? LINUX内存的默认块大小是4K 如果SGA为:128G select 12810241024/4 from dual;33554432个(三千多...

    在Linux中配置hugepage可以提高oracle的性能,减少oracle sga的页交换,类似于aix中的lagepage。
    为什么 使用大页?
    LINUX内存的默认块大小是4K
    如果SGA为:128G
    select 12810241024/4 from dual;33554432个(三千多万),
    select 128*1024/2 from dual; 65536个
    每个内存页,有一个页表项(大概10个字节),记录页的状态、位置
    默认块大小是4K时–页表大小:320M。
    在大页下2M时,页表只占.625M

    在Linux中,每个进程页表独立,有各自的页表。
    如果有1000个进程:1000320M大约是320G。
    而1000个进程使用大页:1000
    0.625=625M
    设置了大页,但没被Oracle使用,原因只有两个:
    (1)SGA_MAX_SIZE超过了大页
    (2)没有设置内存锁
    内存:是进程活动的舞台,ORACLE数据库在startup时会自动去查找是否设置有大页。
    如有,在大页中分配SGA。
    如没有,则正常使用默认数据块大小启动。
    #############
    设置大页步骤:
    1.查看系统当前的大页使用情况:
    [oracle@bys3 ~]$ cat /proc/meminfo |grep Huge
    HugePages_Total: 0
    HugePages_Free: 0
    HugePages_Rsvd: 0
    HugePages_Surp: 0
    Hugepagesize: 2048 kB --大页大小是2M
    BYS@ bys3>show parameter sga_max --查看数据库SGA大小–我的实验机
    NAME TYPE VALUE


    sga_max_size big integer 216M

    1. 设置大页的数量
      –这里是200个*2M=400M,SGA最大216M,大页的内存要大于SGA大小,才能被ORACLE使用,所以我设置200个。

    vi /etc/sysctl.conf
    在里面增加一行:
    vm.nr_hugepages=200
    保存之后执行:
    sysctl -p
    查看: --如果HugePages_Free:未到200,多执行几次sysctl -p
    [root@bys3 ~]# cat /proc/meminfo |grep Huge
    HugePages_Total: 200
    HugePages_Free: 200
    HugePages_Rsvd: 0
    HugePages_Surp: 0
    Hugepagesize: 2048 kB

    3.还需要设置内存锁:-- memlock数量要大于大页的数量–设置为-1,不限制。
    vi /etc/security/limits.conf
    oracle soft memlock -1
    oracle hard memlock -1
    [root@bys3 ~]# ulimit -l
    3500000 -----这个数字就是针对大页数量的限制的,足够用。

    4.重启数据库,大页已经被ORACLE用上了。
    SYS@ bys3>shutdown immediate;
    SYS@ bys3>startup

    重启数据库过程中不断执行;cat /proc/meminfo |grep Huge,能看到HugePages_Free:的数量不断减少,说明大页正在被使用。
    [root@bys3 ~]# cat /proc/meminfo |grep Huge
    HugePages_Total: 200
    HugePages_Free: 101
    HugePages_Rsvd: 10
    HugePages_Surp: 0
    Hugepagesize: 2048 kB

    ========================================
    MOS中明确的参数设置要求
    alter system reset memory_target scope=spfile;
    alter system reset memory_max_target scope=spfile;

    如果dbca以非AMM方式建库会遇到ORA-32010: cannot find entry to delete in SPFILE,也就是说spfile本来就没有这两个参数,错误忽略即可。
    MOS中原文
    If you want to use HugePages make sure that both memory_target / memory_max_target initialization parameters are unset
    unset代表spfile中不允许出现memory_target和memory_max_target(关于这一点,Oracle官方文档中的描述是错误的,而MOS中的一些描述才是正确的)。目前我们实施文档中的标准是设置memory_target,这样其实是没问题的。但是只要再设置memory_max_target就不行了,不管该参数设置为0还是非0,大页都不会生效。所以,正确的配置是memory_target和memory_max_target两个参数都不要出现在spfile中,即都reset掉。

    额外设置的参数
    alter system set use_large_pages=only scope=spfile;
    强制大页生效,如果大页小于sga或者参数配置不符合大页配置规范,实例将无法启动,从根本上杜绝大页不生效的情况,以前确保sga 100%放到hugepage中只能通过vi去alert日志中搜索,这样也可以免除大家检查的复杂性。

    展开全文
  • <div><h3>Propose new enhancement for hugepage. <ul><li>add example of CRI update</li><li>Support container isolation of huge pages</li></ul> <p>More information is available in below issue. ...
  • 文章目录概述HugePages相关HugePages优势HugePages缺点HugePages操作Transparent HugePages相关Transparent HugePages缺点Transparent HugePages操作参考MOS 概述 某几位朋友查看完Oracle RAC环境构筑文章时,他们都...
  • OSX Hugepages

    2020-12-09 07:33:01
    <p>JFYI: Your improvements probably break hugepages on OSX as they are showing as "Available" but "Disabled". Restart, sudo cannot help. Clean XMRig works good here incl. Hugepages... ...
  • Using HugePages

    2020-11-27 11:49:00
    <div><p>It would be nice if we can instruct rpmalloc to use HugePages allocation. <p>At least on linux it's achieved by mmap-ing files from where the hugetlbfs is mounted. So we should be able to ...
  • 达梦HUGE

    2019-12-10 18:04:28
    HUGE表实际上是列式存储的,缓存在HUGE BUFFER中。表空间需要是建立HUGE表空间,建HUGE表的时候不写表空间则默认指定在HMAIN。 drop table t_huge; create huge table t_huge as select * from dba_objects; drop...
  • allocated using huge pages. This is useful for running with a user mode networking stack, and for custom setups which require high performance and low latency. <p>Note: Needs revendoring of ciao/qemu ...
  • Huge Position uncertainty

    2020-12-08 21:00:09
    ve noticed that with ZUPT, LAT, UP pseudo measurements uncertainty of position reaches huge numbers with order of 1e+5(6..7..). Which can be explained by the fact that we never measure position, ...
  • super huge folder

    2021-01-08 08:06:26
    <div><p>To deal with super huge folder which contains tons of sub-folders and files, I make the following changes: 1. Add folder database to store the size and last sizing time of the folder. 2. When ...
  • Decrypting HUGE files

    2020-12-09 13:10:49
    <div><p>Here is my current use-case: Huge files (GB or more) must be PGP-decrypted and immediately re-encrypted. Currently, I'm using subprocess, call GnuPG and pipe the output to my python ...
  • kernel hugepages

    2020-11-27 12:45:57
    <div><p>I cannot get hugepages that i need ,but the system have enough memory, i can be sure</p><p>该提问来源于开源项目:DemocracyEarth/dapp</p></div>
  • iOS 宏HUGE_VALL,HUGE_VAL,HUGE_VALF的含义

    千次阅读 2016-05-25 14:48:47
    HUGE_VALF,HUGE_VAL和HUGE_VALL宏展开积极的浮点常量表达式.   常数 Explanation HUGE_VALF 表示该值无法表示的float类型(无穷大) ...
  • Huge bundle size

    2020-12-08 20:37:20
    With a quick look, it seems that angular2, (literally) cryptographic stuff and polyfills have huge portions. Track down unnecessary modules.</p><p>该提问来源于开源项目:shuhei/babel-angular2-...

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