“Odoo is slow” is not a problem statement. It is a feeling.<\/p>\n
Slow where?<\/strong> Opening a specific screen, running a report, saving a record, loading the whole system, or only at certain times of day?<\/p>\n The answer changes everything. A slow report and a slow login have nothing in common, and buying a bigger server fixes neither in most cases.<\/p>\n Before anything else, get specific:<\/p>\n That last question is the most useful.<\/strong> Performance rarely degrades gradually. It usually changes after something \u2014 a module installed, a data import, a new integration, a growth threshold crossed.<\/p>\n FIGURE 1: NARROW IT DOWN BEFORE YOU SPEND ANYTHING<\/p>\n Which action is slow?<\/p>\n How slow, in seconds?<\/p>\n Who and when?<\/p>\n What changed?<\/p>\n In rough order of how often they turn out to be the real problem.<\/p>\n By a clear margin, the most common cause.<\/p>\n One inefficient piece of code \u2014 a calculation that runs on every record, a search inside a loop, a stored field recomputing constantly \u2014 can slow the whole system. Not just its own screen.<\/p>\n If performance changed after a module was installed, start there.<\/strong> It is the first thing an experienced person will check.<\/p>\n The same problem, from apps installed from the app store. Quality varies enormously. A module that works fine with a thousand records can be unusable with a hundred thousand.<\/p>\n Install fewer, and test them with realistic data volumes before going live.<\/p>\n A list view with no filter, on a table with millions of rows, will be slow no matter how good your server is.<\/p>\n The fix is usually configuration: default filters, sensible list limits, and archiving what is no longer active.<\/p>\n The filestore grows quietly. Scanned invoices, product photos, email attachments \u2014 a few years of these can become very large, and it affects backups more than screen speed.<\/p>\n Know how big yours is.<\/p>\n A report across five years of data will take longer than one across a month. Often this is simply expected behaviour, and the answer is a narrower default date range rather than an optimisation.<\/p>\n Sometimes it really is capacity \u2014 not enough memory, too few workers, a database that has outgrown its machine.<\/p>\n It is far less often the cause than people assume<\/strong>, which is why it belongs at the bottom of this list rather than the top.<\/p>\n FIGURE 2: WHERE PEOPLE LOOK AND WHERE THE PROBLEM USUALLY IS<\/p>\n Usually the real cause<\/p>\n Where people look first<\/p>\n Four habits that keep a system healthy.<\/p>\n Archive instead of deleting.<\/strong> Odoo can archive records \u2014 they leave the default views but stay available. Old customers, discontinued products, closed projects. This is safe and effective.<\/p>\n Set default filters.<\/strong> Most list views should open filtered to something useful, not to everything ever recorded.<\/p>\n Review installed modules yearly.<\/strong> Uninstall what is not used. Every module carries a cost even when nobody opens it.<\/p>\n Watch your filestore size.<\/strong> Know the number and how fast it is growing.<\/p>\n Not a business owner’s job, but worth recognising the terms when they come up.<\/p>\n Database maintenance.<\/strong> PostgreSQL needs periodic vacuuming and index maintenance. Neglected, it degrades steadily.<\/p>\n Worker configuration.<\/strong> Odoo runs multiple processes. Too few and users queue; too many and the server runs out of memory. It is a tuning exercise, not a bigger-is-better setting.<\/p>\n Query profiling.<\/strong> Odoo has developer tools that show exactly which database query is slow. This is how a real diagnosis is made, rather than by guessing.<\/p>\n Caching and static assets.<\/strong> A properly configured web server in front of Odoo makes a noticeable difference to page loads.<\/p>\n Buying a bigger server before diagnosing.<\/strong><\/p>\n It is the most common response and often the least effective. If the cause is an inefficient module, more hardware buys you a slightly faster version of the same problem \u2014 and now you are paying more every month, forever.<\/p>\n Diagnose first. Sometimes the answer genuinely is capacity. Frequently it is one module, one query, or one unfiltered view.<\/p>\n Not every slowness is worth a project. Ask what it costs.<\/p>\n Worth investigating:<\/strong> something people do many times a day that takes noticeably too long, or a system-wide slowdown affecting everyone.<\/p>\n Probably not worth it:<\/strong> a monthly report that takes two minutes. Run it with a coffee.<\/p>\n The calculation is simple \u2014 how many people, how many times a day, how many seconds. Multiply. If the answer is hours per week, it is worth fixing.<\/p>\n FIGURE 3: A SENSIBLE ORDER TO INVESTIGATE<\/p>\n Measure<\/p>\n Recent changes<\/p>\n Data volume<\/p>\n Server<\/p>\n If someone proposes a performance fix, ask:<\/p>\n A partner who can answer the first question with numbers is diagnosing. One who goes straight to a server recommendation is guessing.<\/p>\n Measure before you spend. Ask what changed. Suspect custom code first and the server last.<\/p>\n Most Odoo performance problems have a specific, findable cause \u2014 and the fix is usually cheaper than the hardware people reach for instead.<\/p>\n Odoo feeling slow and not sure why?<\/p>\n Get in touch. We will measure what is actually slow and find the cause before recommending anything that costs money.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":" Start by measuring, not guessing “Odoo is slow” is not a problem statement. It is a feeling. Slow where? Opening a specific screen, running a report, saving a record, loading the whole system, or only at certain times of day? The answer changes everything. A slow report and a slow login have nothing in common, […]<\/p>\n","protected":false},"author":3,"featured_media":9116,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-9115","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-odoo"],"yoast_head":"\n\n
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The usual causes<\/h2>\n
1. A custom module<\/h3>\n
2. Third-party apps<\/h3>\n
3. Too much data in one view<\/h3>\n
4. Attachments<\/h3>\n
5. Reports over long periods<\/h3>\n
6. The server, genuinely<\/h3>\n
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Things worth doing routinely<\/h2>\n
Things to leave to your technical partner<\/h2>\n
The trap to avoid<\/h2>\n
When it is worth investigating<\/h2>\n
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What to ask a partner<\/h2>\n
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The short version<\/h2>\n