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Direct MessagesDate/Time: Sun, 05 May 2024 13:33:20 +0000
reload at market open
View Count: 1061
| [2016-06-23 17:22:44] |
| User472677 - Posts: 316 |
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hello, reload at market open works well with one exception, with about 50 charts open, at 9:30 am et it takes 1-8 minutes for all charts to reload. I extensively trade at the open. I can tolerate couple of seconds. My present software has it done instantaneously, with my eye I see no delay. hardware resources are optimized and top of the line. I am getting close to putting sierra into production. RIGHT NOW THIS IS A SHOW STOPPER. Please help at your earliest. thx |
| [2016-06-23 17:49:28] |
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Yes we are aware of that. That is one of the consequences of this. Although it should not be taking minutes. We would expect this would be finished in under 30 seconds or less. Especially if the charts are only loading a single day. It should be done in under 10 seconds. We do not have a solution to this other than recommending that you use multiple instances of Sierra Chart: https://www.sierrachart.com/index.php?page=doc/doc_DTCServer.php#UsingDTCServerForDataAndTradingInAnotherSCInstance And increase the speed of your hardware. You definitely need to use Solid State Drives and a faster CPU and at least 16 gigabytes of memory. Make sure you also get a quad core CPU. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing Date Time Of Last Edit: 2016-06-23 17:49:55
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| [2016-06-23 19:12:33] |
| User472677 - Posts: 316 |
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Thx for your prompt response. I am using ssd 16gb ram and i7. Using multiple instances helps but not enough. You are obviously very intelligent and know your software. PLEASSE LOOK FURTHER INTO IT, even a small improvement will help. Will going to 32 gb ram help, it does not seem to use more than about 5gb of ram? |
| [2016-06-23 19:18:14] |
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This definitely should not take eight minutes. Something is not right. Are these charts just loading 1 day of data? There is no need to increase the memory further. When you go to one of the charts and select Chart >> Reload and Recalculate how long does it take? Also refer to: https://www.sierrachart.com/index.php?page=doc/helpdetails30.html#h30.8 Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2016-06-23 19:25:23] |
| User472677 - Posts: 316 |
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reload and recalculate on one chart takes about 300 ms
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| [2016-06-23 22:35:09] |
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Therefore, the total time should be about 15 seconds. One reason it can be taking longer is due to computer hardware limitations. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2016-06-24 11:34:36] |
| User472677 - Posts: 316 |
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1.Does market reload on multiple symbols not take place in parallel? 2.From your response it appears to take serially, can this be changed to parallel? 3. Is it fetching data from disk? 4. Can it pre-fetch data from disk to ram? 5. If it must be done serially, can it not leave a chart undisturbed until it is turn of this chart to reload? 6. My present software deletes premarket and after market data instead of reloading. It makes sense since the displayed data is already in ram. PLEASE CONSIDER THIS APPROACH. I will log hardware performance in detail and see if there are bottlenecks? |
| [2016-06-24 14:55:27] |
| User472677 - Posts: 316 |
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At market open, here is the average sierra use in the first two minutes. cpu 27% memory 24% ssd hits high read rates --- this seemed to be the limiting factor. However it can not be improved with hardware change. PLEASE CONSIDER MY SUGGESTIONS IN THE LAST POST. |
| [2016-06-24 15:02:55] |
| User472677 - Posts: 316 |
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The data above explains why running two instances does not help a lot.
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| [2016-06-24 17:40:13] |
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1. Yes but it depends upon when a symbol begins trading during the session. 2. It is in parallel. 3. Yes. 4. It may come from RAM if the operating system has cached the data. 5. Not relevant. 6. There is no way we can do anything different with this. it is quite difficult and we do not have time for more than a year from now. You could always install a more high-performance SSD. For example a NVMe SSD. We know that handling this in software and working just with the data in memory would be best. But a NVMe SSD will make a noticeable difference. https://en.wikipedia.org/wiki/NVM_Express Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing Date Time Of Last Edit: 2016-06-24 17:40:51
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