{"id":2935,"date":"2019-03-25T17:41:54","date_gmt":"2019-03-25T20:41:54","guid":{"rendered":"http:\/\/xexeu.elipse.com.br\/pt\/what-is-the-bandwidth-consumption-in-an-e3-application\/"},"modified":"2020-01-20T17:17:24","modified_gmt":"2020-01-20T20:17:24","slug":"what-is-the-bandwidth-consumption-in-an-e3-application","status":"publish","type":"post","link":"https:\/\/kb.elipse.com.br\/en\/what-is-the-bandwidth-consumption-in-an-e3-application\/","title":{"rendered":"What is the bandwidth consumption in an E3 application?"},"content":{"rendered":"<div style=\"text-align: justify;\">\n<p>To answer this question, we must first evaluate the application. There are several E3 resources that consume bandwidth, such as: alarm summaries; Viewer queries; Viewer scripts accessing server objects (such as <span style=\"font-family: Courier New; color: #000000;\">Application.GetObject<\/span>); downloading screens, libraries, and resources; and activating and deactivating links (such as opening and closing windows); among others.<\/p>\n<p>To measure bandwidth consumption, a sample application was developed with the following objects:<\/p>\n<ul>\n<li>1000 displays;<\/li>\n<li>1000 internal tags; and<\/li>\n<li>1000 demo tags.<\/li>\n<\/ul>\n<p>This application was developed so that all displays on screen are linked to internal tags, and each internal tag linked to a demo tag with a 1-second variation. This link uses the following functions: <span style=\"font-style: italic;\">CStr<\/span>, <span style=\"font-style: italic;\">CInt<\/span>, <span style=\"font-style: italic;\">CLng<\/span>, <span style=\"font-style: italic;\">CByte<\/span>, and <span style=\"font-style: italic;\">CSng<\/span>.<\/p>\n<p><span style=\"font-weight: bold;\">Example<\/span>: InternalTag51 has the following linked tag: <span style=\"font-family: Courier New; color: #000000;\">CInt(Data2. DemoTag51.Value)<\/span><\/p>\n<p>By analyzing E3&#8217;s statistics logs, you can check the necessary bandwidth to rout data.<\/p>\n<p><span style=\"font-weight: bold;\">Example 1:<\/span><\/p>\n<div style=\"text-align: left; font-family: Courier New; color: #000000;\">RECClient(1): Viewer connected to RAIMANN Sent=1295(101568B) Recv=1307(19911751B) Pending=0(0B) Elapsed=10:04.005 REC=v2.90 Remote=v4.0.043<\/p>\n<p>RECClient(1): Viewer connected to RAIMANN Sent=1891(115872B) Recv=1903(29164159B) Pending=0(0B) Elapsed=15:01.920 REC=v2.90 Remote=v4.0.043<\/p><\/div>\n<p><span style=\"font-weight: bold;\">Routed packets in a 5-minute interval<\/span>: 596<br \/>\n<span style=\"font-weight: bold;\">Routed packets per second<\/span>:\u00a0 1,98<br \/>\n<span style=\"font-weight: bold;\">Bandwidth consumption in a 5 minute-interval<\/span>: 9252408B<br \/>\n<span style=\"font-weight: bold;\">Bandwidth consumption per packet<\/span>: 15525B = 15,5KB<br \/>\n<span style=\"font-weight: bold;\">Bandwidth consumption per second<\/span>: 30843B = 31KB\/s<\/p>\n<p>Please notice that in this scenario, the option for level of compression of REC packets is off.<\/p>\n<p>If we retake the test, but now with the highest level of REC compression (9), we will have:<br \/>\n<br style=\"font-weight: bold;\" \/><span style=\"font-weight: bold;\">Example 2: <\/span><\/p>\n<div style=\"text-align: left;\"><span style=\"font-family: Courier New; color: #000000;\">RECClient(1): Viewer connected to RAIMANN Sent=1254(35453B\/100212B) Recv=1257(1629516B\/18736276B) Pending=0(0B) Elapsed=10:03.630 REC=v2.90 Remote=v4.0.043<\/span><br style=\"font-family: Courier New; color: #000000;\" \/><br style=\"font-family: Courier New; color: #000000;\" \/><span style=\"font-family: Courier New; color: #000000;\">RECClient(1): Viewer connected to RAIMANN Sent=1848(49709B\/114468B) Recv=1851(2431899B\/27975352B) Pending=0(0B) Elapsed=15:00.640 REC=v2.90 Remote=v4.0.043<\/span><\/div>\n<p><span style=\"font-weight: bold;\">Routed packets in a 5-minute interval<\/span>: 594<br \/>\n<span style=\"font-weight: bold;\">Routed packets per second<\/span>: 1,98<br \/>\n<span style=\"font-weight: bold;\">Bandwidth consumption in a 5 minute-interval<\/span>: 802383B<br \/>\n<span style=\"font-weight: bold;\">Bandwidth consumption per packet<\/span>: 1350B = 1,3KB<br \/>\n<span style=\"font-weight: bold;\">Bandwidth consumption per second<\/span>: 2674B = 2,7KB\/s<\/p>\n<p>With the highest level of REC compression, you can see the consumption of bandwidth is somewhat smaller.<\/p>\n<p>The following table analyzes other types of data.<\/p>\n<div style=\"text-align: center;\"><img loading=\"lazy\" title=\"\" src=\"http:\/\/kb.elipse.com.br\/pt-br\/images\/ID4607\/Figura1.png\" alt=\"\" width=\"378\" height=\"359\" align=\"Baseline\" border=\"0\" \/><\/div>\n<p><span style=\"font-weight: bold;\">Note<\/span>: In <span style=\"font-style: italic;\">CStr <\/span>types, the strings are small (the double value of a demo tag converted into string must be around 10 characters). If the strings are larger, the bandwidth must be higher.<\/p>\n<p>Please notice that the tags&#8217; update on screen must not be a bottleneck point. In the case of scripts that access the server (or other synchronous commands), the latency can make a lot of difference, even when the bandwidth is high. Therefore, we believe the bottleneck points should be:<\/p>\n<ul>\n<li>Time of screens switchover (it involves creating links and occasionally downloading screens\/libraries and\/or resources): sensitive to network latency. The application can work with a very slow network, depending on the acceptable time for the switchover. <span style=\"font-weight: bold;\">We recommend<\/span>: Organizing libs, and occasionally exchanging some resources for their smaller versions.<\/li>\n<li>Time of execution for scripts accessing the server (usually a sequence of operations): very sensitive to network latency. The application can work with a slow network, depending on the acceptable time for terminal operations. <span style=\"font-weight: bold;\">We recommend<\/span>: A careful development of the application by, for example, moving scripts to the server.<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>To answer this question, we must first evaluate the application. There are several E3 resources that consume bandwidth, such as: alarm summaries; Viewer queries; Viewer scripts accessing server objects (such&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0},"categories":[767,768],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is the bandwidth consumption in an E3 application? - Elipse Knowledgebase<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kb.elipse.com.br\/en\/what-is-the-bandwidth-consumption-in-an-e3-application\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the bandwidth consumption in an E3 application?\" \/>\n<meta property=\"og:description\" content=\"To answer this question, we must first evaluate the application. 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