If available RAM is approaching zero at any time during load, your system performance is limited by RAM.

如果可用RAM在任何时刻接近零，则系统性能将受到RAM的限制。

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The lines shown in Listing 1 tell PHP to load the Zero extensions.

清单 1 中的代码行让 PHP 装载 Zero 扩展。

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For example, if after a load all the data is on one partition and runstats is executed from another partition, it will update syscat.tables to show zero rows for that table.

例如，如果加载之后所有数据都在一个分区上，并从另一分区执行runstats，那么该命令将更新syscat . tables来表示该表的行数为零。

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Zero G Aerospace will lose money on its first load of business cards, but once the rocket proves itself, Gonser and Gorrell hope to become the kings of the space souvenir business.

NPR: Tech Tycoons' Dream: My Own Private Spaceship