StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
1754189
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2009-11-18T07:18:10.390
FavoriteCount
0
LastActivityDate
2009-11-18T07:18:10.390
LastEditDate
LastEditorUserId
0
OwnerUserId
211022
ParentId
1235861
PostTypeId
2
Score
4
ViewCount
0
LastEditorDisplayName
text
Body
<p><a href="http://cseweb.ucsd.edu/~snoeren/papers/lda-sigcomm09.pdf" rel="nofollow noreferrer" title="Every Microsecond Counts: Tracking Fine-Grain Latencies with a Lossy Difference Aggregator">A recent paper</a> might be of some use (and would also be much cheaper than hardware-based solutions). There are also ways of fairly accurately accounting for clock skew; the last time I seriously looked into one-way latency measurement research (a couple years ago), the most <em>accurate</em> technique was a <a href="http://an.kaist.ac.kr/~sbmoon/paper/intl-conf/1999-infocom-clock.pdf" rel="nofollow noreferrer" title="Estimation and Removal of Clock Skew from Network Delay Measurements">linear programming algorithm</a> by Sue Moon (with reference code conveniently available <a href="http://an.kaist.ac.kr/~sbmoon/1999-infocom-clock-synch/skew_lp.tgz" rel="nofollow noreferrer">here</a>), but without using some rather modern linear programming techniques, it's fairly impractical to do as an online algorithm; it's best just to record timestamps without doing any calculations periodically throughout the day, and then run the LP algorithm on the accumulated data afterwards. There were a few other techniques that were quick enough to be done on-line (including the <a href="ftp://ftp.ee.lbl.gov/papers/vp-clocks-sigmetrics98.ps.gz" rel="nofollow noreferrer" title="On Calibrating Measurements of Packet Transit Times">seminal paper</a> by Vern Paxson), but they were all much less accurate.</p>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POHow do you measure latency in low-latency environments?
  singulars
  PostTypePostTypeId
  PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USstrangelydim
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
  singulars
  PostPostId
  PO
  UserUserId
  This table or related slice is empty.
  VoteTypeVoteTypeId
  VTUpMod
2. VO
  singulars
  PostPostId
  PO
  UserUserId
  This table or related slice is empty.
  VoteTypeVoteTypeId
  VTUpMod
3. VO
  singulars
  PostPostId
  PO
  UserUserId
  This table or related slice is empty.
  VoteTypeVoteTypeId
  VTUpMod
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.