Hello, qpFeed is completely different. The plugin is not developed by us, but by Quotes Plus. You need to consult them for performance of their plugin.
Best regards, Tomasz Janeczko amibroker.com ----- Original Message ----- From: "monitorit" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, November 06, 2008 12:02 AM Subject: [amibroker] Re: "SLOW" backfill and delay with IQFeed > Tomasz, I use qpFeed not IQfeed but have had a problem forever that > is somewhat the same. There is NO problem when just updating a few > symbols continuously-but- if I try to keep about 75-100 symbols > updating, the quotes come in slower and slower. The people at the > quote provider say they get no complaints and there is no problems > sending out the quotes. Can you try to set up a 1 minute db with > about 100 tickers, the layout has 5 windows all symbol-linked (1min, > 2min, 5min, 15min and daily). Use any simple indicator with the > price (ie 10 bar MA). Run any simple AA to cause all 100 tickers to > update. Then see how long the symbols take to get up to date and > more important, come back a few hours later and see the time of the > last bar compared to the time on your clock.. has it fallen behind? > You can just leave the original symbol displayed- no need to change > symbols after the first change after running the AA. I know we have > discussed this before- but I wonder if you have done my little > experiment yourself? > Thanks again and I remain convinced AB is the best by far. > Dan > > --- In [email protected], "Tomasz Janeczko" <[EMAIL PROTECTED]> > wrote: >> >> It should take less. Maybe you have firewall problems. >> I checked and it backfills with speed of about 500+ bars per > second, so >> backfill of 1000 bars of single symbol using IQFeed takes about 2 > seconds on my end (2mbps DSL) >> >> Indeed it used to be faster in the past (3 or 4 times faster from > memory), so I guess some limits were added by IQFeed recently. >> >> Best regards, >> Tomasz Janeczko >> amibroker.com >> ----- Original Message ----- >> From: "przemyslawuk" <[EMAIL PROTECTED]> >> To: <[email protected]> >> Sent: Wednesday, November 05, 2008 10:52 PM >> Subject: [amibroker] Re: "SLOW" backfill and delay with IQFeed >> >> >> > Tomasz, I was trying to use AB with a minimum amount of data. >> > Currently my database settings are : 1min/1100bars/32kb per > symbol. >> > So, 60 symbols*32kb=1.8Mb >> > I don't understand why intraday scan with "wait for backfil" takes >> > almost 1 hour. I understand that there must be some additional >> > "negotiation" -request the symbol, wait for data....etc. but even > so >> > it should not take that much time. I measured my connection speed >> > using "speed meter" on 2wire.com website and it shows more than > 1MB/s. >> > >> > >> > Am I right that streaming 100 symbols is equivalent to avg > internet >> > transfer of about 10kb/s at the most? >> > >> > And, Should the backfill of 100 symbols =3.2Mb be a matter of a > few >> > seconds with internet speed of 1Mb/s (measured)? >> > >> > Windows task manager shows 38% CPU (40/60 between IQ and AB) and > LESS >> > than 1% internet bandwidth usage -- WHY is it not using the entire >> > bandwidth available????????????????? >> > >> > Another thing I don't understand is, why with the above numbers my >> > Core2 Duo PC is nonresponsive when watching 4 charts ?????? >> > >> > I have a separate internet connection for AB and my trading > platform >> > because when I run intraday scans AB can cause other applications >> > running on the same connection to loose the connection. And I > have the >> > fastest connection the money can buy in my area. >> > >> > I was complaining to IQFeed, we spend an hour online running tests >> > and they say that everything looks ok. >> > >> > I saw posts from other AB users claiming that they have 8 charts > on >> > the screen on a PC two generations older than mine. I was wonder > how >> > do they manage to trade. >> > It is my 3rd PC and I always get the same problems. I am not >> > complaining here about AB because it is still the best program in > my >> > opinion, but I have never seen anyone else using it, so I try to > get >> > some feedback whether I just complain about things not knowing > that it >> > is the way they should be. >> > >> > Could someone else share their experience with AB? >> > >> > >> > >> > ------------------------------------ >> > >> > **** IMPORTANT **** >> > This group is for the discussion between users only. >> > This is *NOT* technical support channel. >> > >> > ********************* >> > TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail > directly to >> > SUPPORT {at} amibroker.com >> > ********************* >> > >> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: >> > http://www.amibroker.com/devlog/ >> > >> > For other support material please check also: >> > http://www.amibroker.com/support.html >> > >> > ********************************* >> > Yahoo! Groups Links >> > >> > >> > >> > > > > ------------------------------------ > > **** IMPORTANT **** > This group is for the discussion between users only. > This is *NOT* technical support channel. > > ********************* > TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail directly to > SUPPORT {at} amibroker.com > ********************* > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > http://www.amibroker.com/devlog/ > > For other support material please check also: > http://www.amibroker.com/support.html > > ********************************* > Yahoo! Groups Links > > >
