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r****o
发帖数: 1950 | 3 非常感谢，请看看我的理解对不对。
UP系统里面，进程A启用spin_lock后，会在它所分配的time slice里面一直try，直到
获得lock。在CPU分配的其他time slice里面，拥有这个lock的那个进程会运行直到释
放这个lock.
MP系统里面，进程A启用spin_lock后，会一直霸占它所对应的那个CPU，一直到另一个
CPU上拥有这个lock的进程释放了这个lock为止。
我的问题是:
1)在MP系统里面，进程A不受time slice的约束吗？
2)为啥说spin_lock在MP系统里面更好，我觉得在MP系统里面，进程A浪费的时间更多啊?
先感谢了。 |
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c**1
发帖数: 71 | 4 if an implementation is incorrect, it doesn't matter whether it is simple.
In user space, thread can go to sleep at any time, nothing can guarantee
that a spin can always get the lock, so all spinlocks in user space have a
limit on how long it can spin, and if it still does not get the lock, it
suspends itself, waiting for other to wake it up. It is impossible to use
only mutex to implement this suspend-and-wait-for-notify.
Even in kernel, it is very hard to get the guarantee that the lock hol... 阅读全帖 |
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c**1
发帖数: 71 | 5 any lock has an implicit requirement: no self deadlock. your implementation
does not meet this requirement.
what do you mean by "one hardware thread call spinlock affects itself"? any
lock involves multiple threads.
kernel uses spinlock because sometimes it is not safe to go to sleep. In
order for it to spin, every user of the lock has to be careful not to go to
sleep and release the lock quickly. |
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d******n
发帖数: 2712 | 6 我们在lock rate之后会发rate lock agreement，disclose GFE，如果rate比原来
application上的低了，还需要重新disclose TIL（Truth-in-Lending）。
因为客人都喜欢听到rate lock的消息，所以有些broker或是loan officer习惯于在一
开始就对客人说rate已经lock了，其实根本没lock，因为今年大体上rate很好，所以他
们这么做风险也不是很大。最近比较郁闷，有些时候没办法，只好说实话了。
还有人赌rate持续下降，报些超前的rate，吸引客人。结果客人跑来对我说，“你们公
司其他人怎么就能给我低的rate，还说能锁，你为什么不能。”好像我在骗人似的，郁
闷呀。。。 |
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j***b
发帖数: 5901 | 7 Being locked for a loan does not obligate you, it obligates the mortgage
company. The "lock" simply says that you are entitled to a certain rate for
a given time. If you have a lock at 6% for thirty days and you find a rate
for 5 7/8% you are free to take the lower rate without recourse. Of course,
most companies have charged you an application fee and done considerable
work for you by the time you get the lock. The practical time to shop for a
rate is before you get a lock unless you are in an ... 阅读全帖 |
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d******n
发帖数: 2712 | 8 如果broker三周前当真没有lock rate的话，那么是broker不够老实。
如果broker三周前当真lock了rate的话，确实没有办法按三周后的rate改一下，不由他
说了算。rate一旦lock，有些lender offer renegotiate的机会，通常是在rate下跌0.
375%的情况下。现在，越来越多的lender根本不offer renegotiate。
不过，根据规定，在rate lock当天就应该disclose rate lock agreement和GFE，让客
户签字的。 |
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d******n
发帖数: 2712 | 9 从行为上看是符合银行规定的，呵呵，只不过broker解释的不太对而已。
在rate有效期内可以提出延利息，一旦过期了，就不是延利息的问题了，是relock的问
题。银行对relock是有规定的，在rate lock失效之后30天内，不允许lock更好的rate
，take the worse scenario，rate lock失效30天之后才能take按当时的市场毫无顾忌
地锁rate。
因此，rate lock失效2天之后确实无法延利息，broker没骗人；而目前市场好转，
broker可以relock原来的rate，只不过他告诉客人的是说把rate延期了，实际上是
relock；而要想锁更低的rate，需要rate lock失效30天之后，broker也没有骗人。 |
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h***b
发帖数: 1233 | 10 rate locking to lender is like buying "insurance" against rate increase
during your lock period. so longer the lock, higher the cost.
find out the earliest and the latest day the purchase has to close. make
sure your lock expiration date falls in btw. too long of a lock = you paid
extra. too short = extension required--still costs extra |
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p*******p
发帖数: 220 | 11 1) can rate be locked before appraisal?
2) If 1) is yes, here is the further question. for example, the locked rate is lower because it is based on the condition LTV<0.6. After appraisal, the real LTV >0.6,i.e. the condition LTV<0.6 is not satisfied.
Then what will happen to the locked rate? low down the locked rate? or need to re-lock the rate? |
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p******y
发帖数: 3523 | 12 如果现在的rate比锁的时候好，注意，是同样program同等长度的rate lock相比，可以
看看有没有free extension可以拿。在rate lock expire之后的30天内，重新lock只能
取同样program同等长度的worse scenario，以前锁的rate和目前的市场rate相比差的
那个。只有rate lock expire 30 天之后才能重新按照市场rate锁。
如果是bank own的房子，估计不会允许LZ等30天之后再锁。
如果同样的program同等长度的rate，目前市场比之前锁的还差，就只有花钱延利率了
。 |
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b********2
发帖数: 5191 | 13 简单来说, 什么时候lock都可以.您可以先lock,再开始递材料, 做appraisal. 但是这
样lock的天数多一些, rate稍微差一点, 但是您在lock之前有充分的自由选择agent和
lender.
如果您先让lender批了, appraisal也做了, 当然可以lock少几天, rate比上面的情况
会好一点, 但是这个时候你也没有选择的机会了.agent说多少就是多少. 同时如果rate
在这段期间升了, 您也没办法.
在实际操作中, 我一般都是给客人做前一种情况. |
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p******y
发帖数: 3523 | 14 如果距离close还有一段时间，那么现在不lock rate也是一个善意的建议，毕竟最近
rate并算不上好。如果还有时间等的话，客人还有可能take rate 下降的机会呢。如果
实在在closing之前降不下来，那也只有认了。不过，如果继续涨，那broker也没什么
办法，客人也只能认倒霉。
一般是否lock rate是看客人自己的决定，一旦lock了，客人承担市场rate进一步下降
的风险，lender承担市场rate进一步上升的风险。
如果来得及的话，客人是可以换broker去重新lock rate做loan的，不过，应该无法
lock同一家lender的rate，尤其是一开始要去lender系统注册的话。客人方面要承担
withdraw的那个loan的appraisal fee，因为该费用在做appraisal的时候就付给第三方
appraisal公司了。 |
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p****6
发帖数: 3373 | 15 看了精华区，说是做完检查才lock rate
我下周才做检查，现在需要提前lock吗？ lock的话时间最好超过预定的closing date
，对吧？
我看有人lock 30天，有人45天，有啥费用吗这个？要不然岂不是lock时间越长越好？ |
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t******2
发帖数: 15 | 16 这个礼拜利率涨疯了，所以沉不住气，今天让mortgage broker lock利率。 Broker 写
了email 说是 他们已经lock了利率，并把 Loan amount， lock period， program，
rate， point， closing cost， special condition 都列在了email 里面。现在是不
是可以放心说broker已经lock了，还需要银行出具什么document么？
还有一个问题当时一性急，让两个broker同时lock利率，但是不同的program，请问这
样做会有什么问题么？
谢谢 |
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w****3
发帖数: 83 | 17 我要一个broker帮我lock rate,他答应了，但是第二天告诉我没锁住。然后rate就一直
往上涨了，他说在我房子close之前一定能帮我锁到当初答应的rate,因为房子close时
间紧，我也没有时间换broker，只好信了他。但现在他要我签一份interest rate lock
-in notification。上面是这么写的："you have either elected not to lock your
loan and will notify the bank when you have made a decision to lock, or you
understand that your loan cannot be locked at this time."
没有锁定在我要的利率上是他的过错，但这个文件是要我承认没有锁定利率是我的选择
，我想到时候利率一直不下来，他也不会履行他的承诺了。我想知道这份文件是大家都
要签的么，还是我的broker自知可能出问题而特意要我签的？如果不签是不是就不能拿
到committment letter了？谢谢！ |
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c**********e
发帖数: 1184 | 18 在30天之内都能close，不过按照RESPA（Real Estate Settlement Procedures Act）
的规定，收到Truth-In Lending之后要等7天才能close，除非能证明贷款是为了“
personal financial emergency”且获得批准才可以。
至于lock的时间，不同的银行有不同的选择，有的给30，45，60天，还有的给14，21，
90或120天的选择。您如果觉得不想承担利率升高的风险，可以早lock；如果预期利率
会下降，那也可以晚lock。像您的case，10月20号lock 30天当然可以，只要closing
date在lock expiration date之前就行。 |
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j****e
发帖数: 13 | 19 如果今天lock，只能是45 day lock。要等到下星期一才能30 day lock。30 day lock
比 45 day lock要少0.125点 fee。但不知道下星期rate会不回升。多谢了。 |
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m**********j
发帖数: 8645 | 20 不会。
如果今天lock，只能是45 day lock。要等到下星期一才能30 day lock。30 day lock
比 45 day lock要少0.125点 fee。但不知道下星........ |
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c**********e
发帖数: 1184 | 21 38万的贷款4.5%每个月的payment是1925.40， 4.625%每个月的payment是1953.73，差
值为$28.33，一个point为3800，3800/28.33=134.13，也就是说4.5%相对4.625%对于您
来说有差不多134个月大概11年没有省钱（如果一直不做refinance的话），您可以衡量
一下能不能接受。例如如果是我，我会选择4.625% no point，因为我会觉得11年有点
多了。
另外，如果说除了这$10,000之外没有其它credit，那么客观的说这个利率在今天看来
有点高了，如果贷款金额是38万，4.625%这个利率水平如果今天lock，能够给的credit
不止$10000。
但是您现在房子马上要close了，所以还是按时close比较重要，最好不要换lender。
至于rate lock，这几天利率有上有下，且短期利率同股票市场一样比较难预测，我们
一般推荐客户利率如果基本满意的话及时lock住，以规避利率上升的风险，根据以往的
经验，想“抄底”的客人一般来说最终不但没有lock住反而利率涨了上去。此外，您可
以问问看看您的len... 阅读全帖 |
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x**********2
发帖数: 1036 | 22 不建议交易打印胖子；胖子是免费的，收费的是服务:
求LOCK&LOCK的GC
所求物品名称:
求LOCK&LOCK的GC
物品类别（coupon: mfc 等；血糖仪等）:
GC
物品来源（报纸夹页，厂家邮寄等）:
上次5折的官网GC
可接受的价格（必须明码标价，必填）:
7折吧
邮寄损失方式哪方承担（若需邮寄，必填）:
付款方式说明:
本贴有效期（必填）:
联系方式（例： 站内）: |
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k***a
发帖数: 2400 | 23 我们是收到材料， processor把信息输入到lender的system之后就可以lock，并同时
confirm with客户。lender lock desk一般是东部时间。所以要早上送到的一般都能当
天lock。2 - 3点后就来不及了， 第二天才能lock。
不用等clean一些condition之后才lock。除非你自己觉得利率会变好，要等等看。 |
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f*****e
发帖数: 5177 | 24 When I read server log, I found two different lock release:
2008-04-10 15:47:30.36 spid52 releasing lock on RID: 5:1:3271:1
...
2008-04-10 15:47:30.36 spid52 releasing lock reference on RID: 5:1:3271:2
What is the different between "releasing lock" and "releasing lock reference
"?
Thank you. |
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z***y
发帖数: 7151 | 25 The first solution actually duplicated in select statement.
To minimize the lock time or avoiding lock escalation, make sure you have
non clustered index on rate column in payrate table.
What would happen if you don't have non clustered index on rate column is
that query optimizer would upgrade to table level share lock if it think it
was more efficient than row level share lock. When table level share lock
was applied to table, it would exclude any update or insert operations onto
this table. |
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c***c
发帖数: 106 | 26 Scroll lock是PC出现之后的产物，比Caps lock晚太多了。而且使用图形界面之后
Scroll lock确实没用了。Caps lock一直是常用键，要不然不可能摆在那个位置。相比
之下你看看Scroll lock被放在哪里？ |
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c***c
发帖数: 106 | 27 Scroll lock是PC出现之后的产物，比Caps lock晚太多了。而且使用图形界面之后
Scroll lock确实没用了。Caps lock一直是常用键，要不然不可能摆在那个位置。相比
之下你看看Scroll lock被放在哪里？ |
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k**********g
发帖数: 989 | 28 昏特。
本质上就是根据各任务的时间性，选择适当的保护方案。
Inefficiency = (average time per operation including lock overhead) divided
by (average time per operation excluding lock overhead) minus 1.0
The numerator is the actual performance. The divisor is the time spent "
doing useful stuff".
Ideally inefficiency = 0, i.e. zero overhead. In practice, make inefficiency
small.
Corollary: If the task takes longer time, it's okay to use lock with larger
overhead per-operation, because the inefficiency won't increase much.
nano... 阅读全帖 |
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d******e
发帖数: 2265 | 29 hi, there
can any daxia tell me what is kernel locking?
this is the words from the informix manual :
"....
The SET LOCK MODE statement is available on computers that
use kernel locking.....
......"
If my computer, a sun untra 1 uses kernel locking, there
should be *.lok in the directory,
the os of my sun is sun 5.7.
thank you
and how to turn on the kernel locking, thank you very much! |
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w*******y
发帖数: 60932 | 30 Lowes 50% off Gatehouse [lowes.com] Entrance Handle sets & Door Locks/Knobs
thru 12/31/10
Features:
Lifetime Warranty
Solid Brass construction
Toll Free Help line: 877-442-8347
Easy Replacement Installation with only a screwdriver
Concealed Screws
We'd been casually reconning entrance lock sets when came upon a GateHouse
deal at Lowes.The set we picked up features solid brass construction (heavy
!) and a 6-pin tumbler Schlage lock assembly. Your local Lowes may be able
to re-key this to match o... 阅读全帖 |
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d*********8
发帖数: 2192 | 33 今天听小孩歌仔听到了
London Bridge is falling down,Falling down, Falling down.
London Bridge is falling down,My fair lady.
Take a key and lock her up,Lock her up, Lock her up.
Take a key and lock her up,My fair lady. |
|
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q***q
发帖数: 402 | 35 控制面板上有两个buttons,1个是4WD diff lock，另一个是traction control (TRAC)
buttons. 请问什么时候该用哪个，它们之间的combination应该如何处理？Manual上说
如果在off-road或者陷在雪里，应该turn off TRAC control，以增加动力。但那个时
候难道我不应该按4WD diff lock按钮吗？有相关技术指南俺可以学习一下吗？谢谢。
谁能说一下什么情况该用哪个组合？confusing ...
________________________________________________
| 4WD diff lock off | 4WD diff lock on |
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p******e
发帖数: 64 | 36 Hi guys,
My passenger side rear door won't lock or unlock automatically, no matter by
key fob, door switch on driver front door, or even key turning. I can lock
and unlock that door manually from the internal. The other three door work
well. And whenever I tried to activate the automatic door locking/unlocking,
I can't hear the locking/unlocking sound from that P rear door which I can
always hear from the other three doors. Do you think it's the problem of
door latch assembly or actuator? Or fro... 阅读全帖 |
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t*********u
发帖数: 26311 | 37 Drive door power lock not working, while all other functions seem to be OK
I could not use the keyfob to lock/unlock the driver door, but I can the oth
er three doors
I could not use the lock/unlock switch on the driver door panel to lock/
unlock the driver door, but I can the other three doors
I can use all the switch on driver door panel to control power window and po
wer mirror |
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d****e
发帖数: 13 | 38 最近一直在买ipad2，基本只用citi的4张卡刷。
今天发现4张卡被同时lock了，不是普通的那种怀疑fraud的lock，那种只lock有可疑交
易的卡。
我今天下午只刷了一次卡，但是其他3张卡也被同时lock了。
打客服电话说处理这个的部门现在下班了，明天8点才能联系。
处理fraud warning的部门是不下班的。
请问有哪位大侠有类似的经验没有？如果只是因为刷得太多怕fraud还好，被怀疑洗钱
就麻烦了！ |
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u******s
发帖数: 3876 | 39 肯定不会说洗钱。等着吧
最近一直在买ipad2，基本只用citi的4张卡刷。
今天发现4张卡被同时lock了，不是普通的那种怀疑fraud的lock，那种只lock有可疑交
易的卡。
我今天下午只刷了一次卡，但是其他3张卡也被同时lock了。
打客服电话说处理这个的部门现在下班了，明天8点才能联系。
处理fraud warning的部门是不下班的。
请问有哪位大侠有类似的经验没有？如果只是因为刷得太多怕fraud还好，被怀疑洗钱
就麻烦了！ |
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r****2
发帖数: 205 | 40 其他没有它家卡用GIVEJOY自动就是15% off，刚买了ship到店。不过这个不是lock&
lock牌子，好像叫lock & seal |
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s********r
发帖数: 403 | 41 The semantics of reader / writer lock is:
[1] Allow multiple readers for read_op(), when reader reads, no writer can
write
[2] When writer perform write_op(), no reader can read_op() successfully.
Would you think that one mutex implementation can describe the above
semantics?
Besides, what do you mean:
"Even in kernel, it is very hard to get the guarantee that the lock holder
does not block on anything and will release the lock in a timely manner."
In Linux kernel, the spinlock works on hardwar... 阅读全帖 |
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f*********s
发帖数: 792 | 42 房子的offer被接受了，今天开始着手申请贷款。
去的一家银行说我们先得lock rate，然后他们才开始真正的申请贷款的process（
appraisal， give materials to
underwriter, etc)。我怎么听人说一般都有1个月的时间lock rate，似乎是什么都做
好了就等着lock rate，完了就可以
close了。我的理解错了，还是这家银行的程序不一般。
我们的loan approval contingency说的是1／28如果拿不到loan就退出offer。如果这
一周不lock rate，那我们基本上1
月28以前不会贷到款。可是今天的loan interest rate 是5.38%，太高了。。。 |
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y****c
发帖数: 875 | 43 我今天去见了我们的loan broker，他们是local一家大型的mortgage company，签了一
堆文件，最后的lock rate confirmation是一个准备好的表格，broker在表里手写的
rate， lock in date, term of lock, expiration date等等。最下面双方签了字。
这个是正式的 rate lock confirmation 么？
第一次买房，真的想按期close，就怕被broker忽悠了。 |
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p*******s
发帖数: 91 | 44 rate is pretty good now, the chance that rates goes lower is smaller than
goes higher, I am not greedy type, there are people to pursue the best ever
rate though
"If I were considering financing/refinancing a home, I would.... Lock if my
closing was taking place within 7 days... Lock if my closing was taking
place between 8 and 20 days... Lock if my closing was taking place between
21 and 60 days... Lock if my closing was taking place over 60 days from now.
.. This is only my opinion of what I w |
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i***k
发帖数: 386 | 45 Wells Fargo 30 year fix 5% 明显吃亏了。刚locked两天，能re-lock吗？如不行，能
不能要求改成floating rate，按closing当天rate算？另外rate多少是不是由银行说了
算，还是有一定的法度？例如说，要求re-lock，银行就咬定说re-lock也是5%，怎么办
？TNND，上当了。 |
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a********g
发帖数: 651 | 46 新房要到６月１１才能close，现在在考虑６０天的lock，broker说他觉得上半年利率
不会有变化，所以建议３０天的lock。
这２种lock会有很大区别么？价钱上。 |
|
z****n
发帖数: 1514 | 47 30 day lock is usually cheaper than 60 day lock, but you get longer time for
60 day lock. |
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a*o
发帖数: 25262 | 48 You can lock the rate by the time you hand in your application documents to
the bank, or you can lock it anytime before closing, but you need to lock
the rate at least 1 week before closing due to regulations. The rate lock
period is typically 60 days - 90 days, which means you have to close within
this period. Most banks need 2 - 3 weeks to process the loan application.
first
application |
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U********n
发帖数: 471 | 49 我的loan officer说lock是lock的一张rate sheet.lock当天的program可以改的。 |
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x********n
发帖数: 206 | 50 上周四跟一个agent lock 了5。周日同学介绍了一个可以lock 4.875的。于是联系原来
得agent, 一直联系不上。别人都跟我说反正还没有作appracial，所以换一个也没什么
问题。所以今天就跟另外一个agent lock 了。回头告诉原来的agent.原来的agent急了
，说这样会大大形象她的credit,还会给银行罚她1000多以上。新的agent 很不错，效
率很高，我也不像他为难。现在问题是我跟两个agent都lock 了，大家说怎么办啊！很
郁闷。 |
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