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プレフィックスのスプリットが原因の取り込みレイテンシの上昇に失敗しました

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環境

  • NetApp StorageGRID 11.5.0.2以降
  • NetApp StorageGRID 11.6

問題

  • 取り込みレイテンシが急激に増加する一方で、S3処理速度が 上昇したり低下したりすることはない
  • 以下の統計サンプルでは、 18:08(GMT)にレイテンシが8秒に上昇しています。
% grep SPUT audit.log | audit-sum -gt 1M
message group           count     min(sec)        max(sec)    average(sec)
=============           =====     ========        ========    ============
...
YYYY-MM-DDT18:03         8819        0.011           1.297           0.031
YYYY-MM-DDT18:04         8579        0.011           1.337           0.035
YYYY-MM-DDT18:05         7826        0.011           1.381           0.036
YYYY-MM-DDT18:06         8062        0.011           1.721           0.036
YYYY-MM-DDT18:07         7399        0.011           7.720           0.119
YYYY-MM-DDT18:08         1520        0.073          12.596           8.728
YYYY-MM-DDT18:09         1941        0.207          12.570           8.074
YYYY-MM-DDT18:10         2233        0.020          12.000           8.063
YYYY-MM-DDT18:11         2559        0.028          11.190           8.745
YYYY-MM-DDT18:12         2617        0.014          11.320           8.927
...
%
  • グリッドネットワークのトラフィックが午前2時(現地時間、GMT+8)を過ぎると大幅に増加します。

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