2008-01-25 Fri
作者:AnySQL, 发布在anysql.net
用了一年的CDMA 1X, 总得来说是很不满意, 信号较差, 也不稳定, 想要连上公司的环境去远程干些活, 那基本上是不可能的, 同事说他们紧急情况下用手机上网处理问题, 就是GPRS了, 感觉速度上还是不错的, 于是就产生了切换到GPRS的想法. CDMA 1X的230Kbps实在是没有感觉, 要不是办了一整年的套餐, 估计早就换了. 当然也不能指望换到GPRS就会有很好很强大的感觉.
因此现在手上有一张多余的CDMA 1X网卡, 是现代的Data Link品牌的, 质量不错, 可以低价转让, 谁有需要可以联系我. 另外还有一个快要到期的CDMA 1X上网套餐, 再充十元钱的话, 二月份还可以包月使用的, 是那种200元, 全国不限时不限地区不限流量的那种套餐, 现在已经买不到不分漫游的套餐了, 有需要的话也可以联系, 当然是0价格了, 条件是将CDMA 1X网卡买走, 这块网卡是三年保修的.
买的GPRS套餐也是每月最低200元的, 不过不是不限时不限流量的, 每月包2000M, 不知道是大B还是小b. 超出部份是1分钱1KB. 希望不要超出, 有同事就手机上了几下网, 结果当话费就有好几百了, 还是喜欢超出了就不让我上网的那种好. 感觉上真是处处收费陷井啊.
买了一整年的那种卡, 打了折, 1800元. 值不? 希望以后远程办公可以好些, 这样就物有所值了.
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- Project VGA is working on a low-budget, open source, VGA-compatible video card. Their goal is to provide something you can build yourself as well as an option for buying it from them.
- PC World reports that open source spending in schools is expected to rise in the next few years. The study cited predicts that schools will spend $489.9 million on open-source software by 2012, an increase from $286.2 million today.
- In a similar vein, ZDNet posts that the open source business model is reaching a tipping point. “With the recent fundings and transactions, the financiers are no longer questioning whether open source, or software-as-a-service, are viable business models.”
Author:NinGoo posted on NinGoo.net
这个星期拿到了新的工作电脑ThinkPad T61，虽然IBM变成lenovo让很多人不爽，但对于我来说还是第一次用上这么好的东东，只是申请的2G内存暂时还只有1.5G，还得等IT有了存货才能换。而机房里则上线了一台新的EMC DMX3存储，由于系统压力太大，原本可以一次搞定的事情不得不分成两个阶段来做，刚刚终于把第一阶段的任务结束，下个星期第二阶段还得接着搞一个星期。做完这个项目，春节前的活儿应该算基本差不多了，巡查巡查就可以回家过年啦。
据说今年湖南遭遇了30年还是50年来特大的一个寒冬，NND，现在的自然天气，不管刮风下雨，还是烈日暴雪，总是XX年不遇，照这个趋势下去，估计地球撑不住多少年头了。现在开始担心，就算航班正常，到了长沙也不一定能有车回去了。据朋友说，长沙不少学校的学生虽然已经放了寒假，却没车回去只能滞留校园，而且电力也供应不上，实行分区限电了。同事开玩笑说，才下几天雪就搞成这个样子，要是发生战争那还得了。死于安乐，生于忧患，看来某些食肉者光惦记肉，完全没有危机意识了。
不扯了，睡觉。
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Recently, reddit added a new feature: the ability for users to create their own reddits. This new feature is currently in closed beta, but I was lucky enough to be one of the handful of users to get an invitation to play around with it (Thanks Alexis).
First, for those of you who do not know what reddit is, here is a quick introduction from their FAQ page:
reddit is a source for what’s new and popular on the web — personalized for you. We want to democratize the traditional model by giving editorial control to the people who use the site, not those who run it. Your votes train a filter, so let reddit know what you liked and disliked, because you’ll begin to be recommended links filtered to your tastes. All of the content on reddit is from users who are rewarded for good submissions (and punished for bad ones) by their peers; you decide what appears on your front page and which submissions rise to fame or fall into obscurity.
Now, take the above explanation and apply it to an Oracle specific reddit site. What you’ll get is the all new Oracle Bubble News, the reddit clone for Oracle related news and blogs. (more…)
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LinuxDevices 的消息，Qnap System 推出了 4-bay 的 NAS —— TS-409 Pro Turbo，这里是其规格：
- Processor — Marvell 5281 500MHz
- Memory — 256MB DDR2 RAM; 8MB flash
- Hard drive capacity — 4 x 3.5-inch SATA I/II drives (not included), up to 4TB internal, RAID 0/ 1/ 5/ 6/ 5+ support
- LAN port — 1 x gigabit Ethernet (RJ-45)
- USB — 3 x USB 2.0 (support printer, disk, digital camera, pen drive, card reader, and USB hub)
- LEDs — USB, status, eSATA, HDD, LAN, power
- Dimensions — 8.9 x 6.9 x 7.4 inches (225 x 176 x 188 mm)
- Operating system — Linux (unspecified version)
我感兴趣的一些地方：
- 我目前在玩的 Processor 是 Marvell 5181，TS-409 使用的 5281 应该是其升级了。
- 8MB Flash 能放下多少东西？我比较感兴趣这台 NAS 支持哪些扩展功能，这些没有在 LinuxDevices 新闻里出现。BT/HTTP/FTP downloader? UPnP AV media server? Web Station?... 我会继续跟进这款产品，应该会有一些更新。
- 256MB DDR2 RAM - 我很羡慕这个数字。我玩过的最高记录是 64MB，但主要的还是 32MB，汗。RAM 搞大一点，性能会提高不少，这可能是 NAS 发展的一个趋势。
- 现在的 NAS 都是 SATA HDD 和 Gigabit Ethernet 了，IDE 被淘汰，毫无悬念。一个还没有出现的潜在趋势：随着 SSD 的提高与普及，Simple NAS 迟早也要支持的。Fenng 就提到 EMC 已经在其产品上应用 SSD 了，虽然那是在高端 NAS SAN 上面。
- 没有 Wireless。一般来讲，Wireless 是 router 的功能。NAS 连到带有 Wireless 的 router 上，也有可以无线访问了，要 NAS 本身带有 Wireless，似乎不太必要，况且现在 Wireless 几乎成了 router 的标配。我曾经做过一段 Wireless for NAS，虽然该型号终於夭折。
--
每一个不曾起舞的日子都是对生命的辜负。
Gmail/Gtalk: jick.nan@gmail.com
作者:AnySQL, 发布在anysql.net
最近心中一直有件事, 让我好几天睡不好觉了, 那就是很邪很强大的过年回去的火车票, 以前回去站就站着, 坐地上也坐过, 忘了有没有用报纸躺过了. 可现在不一样了, 有了老婆了, 她说汽车票肯定不坐, 又没有飞机票可买, 只有火车票了. 今年要带不到一岁半的儿子回家过年, 怎么说都得坐好一些的, 和谐号就成了首选了.
前天我去上海龙阳路地铁站买票, 被告知2月2号从上海到义务的D字头火车票只有早上7:30分的, 心里马上凉了一截. 其他的非D字头车还不能卖, 只提前8天, 早上7点, 我怎么将儿子带到上海来啊? 就此落下了一个短期的心病.
今天早上, 再去龙阳路地铁站买票, 发现排着一条长龙, 还要上班呢, 不能排在后面了, 白跑了一趟了, 多花了三块钱.
今天下班, 还去龙阳路地铁站买票, 因为我想了一想, 早上由于能买新一天的票, 因此排的人肯定很多, 下班时去不会很多. 果然, 去时我的前面只有两个人, 还是问2月2号从上海到义务的和谐号D车, 居然有下午1点发车的了, 还顺便买了从南京到上海的票,以及我从上海回南京去的票, 一总5张, 支出498元, 其中25元是订票费.
全程动车, 全程和谐, 短途票黄牛们不是很炒了, 因此得感谢他们随着时代进步, 也有可能上头关照过了, 和谐号的票不要太炒, 要不就不和谐了.
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FF，她最喜欢的动画片之一。
Negative，她最喜欢的乐队之一。
Still Alive ……
These are those days, when I can get no sleep
I’m so tired I’d like to fall into sleep
I fall in my bed
But still I’m awakeThese questions in my mind are so much bigger than life
But my life is short and I have to leave them behind
I have to try to forget
That I am still in my bedIn my deepest fears I’m losing you
Even if somebody tried to stop my heart
I’m still alive I will never give upJust turn off the lights
Don’t wanna see me die
I look like I’m dead
But when you look at me
I am still aliveJust open your eyes
Don’t wanna see me cry
I’m right here where you want me to be
Fighting with myselfAll I need to feel is your breath on my skin
This endless longing between you and me
We can’t give up now
We’re gonna make it somehowIn my sweetest dreams I’m with you
Even if somebody tried to stop my heart
I’m still alive I will never give upJust open your eyes
Don’t wanna see me cry
I’m right here where you want me to be
fighting with myself, with myselfWon’t you open your eyes
Don’t wanna see me cry
I’m right here where you want me to be
fighting with myself
I’m right here where you want me to be
fighting with myself
I’m right here where you want me to be
fighting with myself, with myself.
Ooh, I look like I’m dead
but when you look at me
I’m still alive
在相应时段做了一个AWR报告，报告中显示了这样一些等待：
Top 5 Timed Events Avg %Total在等待事件中，"SQL*Net more data to client"是最为显著的，这意味着什么呢？
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time Wait Class
------------------------------ ------------ ----------- ------ ------ ----------
SQL*Net more data to client 307 769 2505 ###### Network
control file parallel write 2,387 37 16 444.1 System I/O
SQL*Net more data from client 26 16 607 187.8 Network
log file parallel write 667 8 12 97.2 System I/O
log file sync 289 5 17 58.1 Commit
-------------------------------------------------------------
这说明数据库在向客户端发送数据，而且是"more"，不停的发送，如果网络状况不好，或者网络流量过大，都可能导致这一等待非常显著。
客户的这个环境属于前者，由于通过公网访问，网络质量不够理想，出现了访问延迟的问题。
简要记录之。
-The End-
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本文网址：http://www.eygle.com/archives/2008/01/sqlnet_more_data_client.html
2008-01-24 Thu
2008-01-23 Wed
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