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Posted to dev@brpc.apache.org by GitBox <gi...@apache.org> on 2022/11/02 08:02:31 UTC
[GitHub] [incubator-brpc] zhaojinzhou opened a new issue, #1980: lalb locality aware 怎么设置参数使得不同机器的qps差异更大？
zhaojinzhou opened a new issue, #1980:
URL: https://github.com/apache/incubator-brpc/issues/1980
使用默认的 lalb参数，发现 即使耗时差异达到两倍， qps的差异 也只有10% 并且没有 两台机器 耗时收敛的迹象。
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[GitHub] [incubator-brpc] wwbmmm commented on issue #1980: lalb locality aware 怎么设置参数使得不同机器的qps差异更大？
Posted by GitBox <gi...@apache.org>.
wwbmmm commented on issue #1980:
URL: https://github.com/apache/incubator-brpc/issues/1980#issuecomment-1310127476
> 调了 punish_inflight_ratio和 min_weight 这两参数。
> 按我理解，min_weight=0就是说可能有机器的 qps约等于没有？
> punish_inflight_ratio=1就是说 只要当前的请求耗时超过平均值了就调权重？
是的。
如果还不符合预期，可以加些日志，把实例的权重打印出来看看
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[GitHub] [incubator-brpc] wwbmmm commented on issue #1980: lalb locality aware 怎么设置参数使得不同机器的qps差异更大？
Posted by GitBox <gi...@apache.org>.
wwbmmm commented on issue #1980:
URL: https://github.com/apache/incubator-brpc/issues/1980#issuecomment-1310028538
https://github.com/apache/incubator-brpc/blob/master/src/brpc/policy/locality_aware_load_balancer.cpp#L31
这里有一些参数，可以调下试试
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[GitHub] [incubator-brpc] zhaojinzhou commented on issue #1980: lalb locality aware 怎么设置参数使得不同机器的qps差异更大？
Posted by GitBox <gi...@apache.org>.
zhaojinzhou commented on issue #1980:
URL: https://github.com/apache/incubator-brpc/issues/1980#issuecomment-1310032703
> https://github.com/apache/incubator-brpc/blob/master/src/brpc/policy/locality_aware_load_balancer.cpp#L31 这里有一些参数，可以调下试试
调了 punish_inflight_ratio和 min_weight 这两参数。
按我理解，min_weight=0就是说可能有机器的 qps约等于没有？
punish_inflight_ratio=1就是说 只要当前的请求耗时超过平均值了就是调权重？
这两参数应该是最极端的参数了。 但是似乎还是没有效果。 只是 机器见的qps 差异确实大了那么一丁点。 但也不明显。
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