Rocksdb cache tuning
everyone
Our blockchain project is using RocksDB as a database, and I am trying to find the optimal value for Block Cache Size. Before I started pouring in the data, I enable the statistics functions (gorocksdb:SetEnableStatistics())and use rocksdb.block.cache.hit COUNT / rocksdb.number.keys.read COUNT to calculate the Cache hit rate for the data read. Unfortunately, I set the Block Cache Size as 128MB, 256MB, 512MB (default), 1024MB, but the calculated Cache hit rate is around 50%, which makes me confused. So, is my calculation method correct? How can I understand this situation?Is this possible?
caching rocksdb
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
add a comment |
everyone
Our blockchain project is using RocksDB as a database, and I am trying to find the optimal value for Block Cache Size. Before I started pouring in the data, I enable the statistics functions (gorocksdb:SetEnableStatistics())and use rocksdb.block.cache.hit COUNT / rocksdb.number.keys.read COUNT to calculate the Cache hit rate for the data read. Unfortunately, I set the Block Cache Size as 128MB, 256MB, 512MB (default), 1024MB, but the calculated Cache hit rate is around 50%, which makes me confused. So, is my calculation method correct? How can I understand this situation?Is this possible?
caching rocksdb
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
add a comment |
everyone
Our blockchain project is using RocksDB as a database, and I am trying to find the optimal value for Block Cache Size. Before I started pouring in the data, I enable the statistics functions (gorocksdb:SetEnableStatistics())and use rocksdb.block.cache.hit COUNT / rocksdb.number.keys.read COUNT to calculate the Cache hit rate for the data read. Unfortunately, I set the Block Cache Size as 128MB, 256MB, 512MB (default), 1024MB, but the calculated Cache hit rate is around 50%, which makes me confused. So, is my calculation method correct? How can I understand this situation?Is this possible?
caching rocksdb
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
everyone
Our blockchain project is using RocksDB as a database, and I am trying to find the optimal value for Block Cache Size. Before I started pouring in the data, I enable the statistics functions (gorocksdb:SetEnableStatistics())and use rocksdb.block.cache.hit COUNT / rocksdb.number.keys.read COUNT to calculate the Cache hit rate for the data read. Unfortunately, I set the Block Cache Size as 128MB, 256MB, 512MB (default), 1024MB, but the calculated Cache hit rate is around 50%, which makes me confused. So, is my calculation method correct? How can I understand this situation?Is this possible?
caching rocksdb
caching rocksdb
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
asked Jan 19 at 9:36
Ethan NanEthan Nan
11
11
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54265753%2frocksdb-cache-tuning%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54265753%2frocksdb-cache-tuning%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
