Access Characteristic Guided Partition for Read Performance Improvement on Solid State Drives

Lv, Yina; Shi, Liang; Li, Qiao; Sha, Edwin H.-M.

doi:10.1109/dac18072.2020.9218540

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…SSDsim [4], a well-known trace-driven simulator, was utilized to model PACP. In the evaluation, flash microarchitecture comprised 8-64 channels, and read latency according to the number of channels was compared with Lv et al's scheme [14], which is performance isolation in a workload. The configuration of flash memory resources per channel and chip operation latency is shown in Table 2.…”

Section: Discussionmentioning

confidence: 99%

“…Interference within the workload has not been addressed Huang et al [13] Lv et al [14] Allocate different types of requests into different partitions…”

Section: Significantly Decrease R/w Interference Between Tenantsmentioning

confidence: 99%

“…Regarding the R/W interference problem within a single workload, Lv et al [14] proposed a static channel partition for different requests to be handled independently. Compared to previous isolation methods, R/W interference can be addressed to a higher level by statically partitioning channels based on workload access patterns.…”

Section: Significantly Decreases R/w Interferencementioning

confidence: 99%

“…The method of Lv et al [14] and PACP, commonly categorized into R/W interference mitigation by performance isolation (Table 1), were compared from various perspectives.…”

Section: Overall Comparison With Existing Solutionmentioning

confidence: 99%

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Parallelism-Aware Channel Partition for Read/Write Interference Mitigation in Solid-State Drives

2022

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The advancement of multi-level cell technology that enables storing multiple bits in a single NAND flash memory cell has increased the density and affordability of solid-state drives (SSDs). However, increased latency asymmetry between read and write (R/W) intensifies the severity of R/W interference, so reads cannot be processed for a long time owing to the extended flash memory resource occupancy of writing. Existing flash translation layer (FTL)-level mitigation techniques can allocate flash memory resources in a balanced manner taking R/W interference into account; however, due to the inefficient utilization of parallel flash memory resources, the effect on performance enhancement is restrictive. From the perspectives of the predicted access pattern and available concurrency of flash memory resources, we propose a parallelism-aware channel partition (PACP) scheme that prevents SSD performance degradation caused by R/W interference. Moreover, an additional performance improvement is achieved by reallocating interference-vulnerable page using leveraged garbage collection (GC) migration. The evaluation results showed that compared with the existing solution, PACP reduced the average read latency by 11.6% and average write latency by 6.0%, with a negligible storage overhead.

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Section: Discussionmentioning

confidence: 99%

“…Interference within the workload has not been addressed Huang et al [13] Lv et al [14] Allocate different types of requests into different partitions…”

Section: Significantly Decrease R/w Interference Between Tenantsmentioning

confidence: 99%

Section: Significantly Decreases R/w Interferencementioning

confidence: 99%

“…The method of Lv et al [14] and PACP, commonly categorized into R/W interference mitigation by performance isolation (Table 1), were compared from various perspectives.…”

Section: Overall Comparison With Existing Solutionmentioning

confidence: 99%

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Parallelism-Aware Channel Partition for Read/Write Interference Mitigation in Solid-State Drives

2022

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“…Serangan siber memiliki dampak yang besar pada penyimpanan data (Lv et al, 2023;Mijwil et al, 2023). SSD adalah salah satu alat penyimpanan yang sering digunakan saat ini (Lv et al, 2020;Liu et al, 2022). SSD memiliki kelebihan dalam kecepatan transfer data, untuk menjaga kinerja dan perpanjangan masa pakai dibuatlah fitur TRIM (Ramadhan and Mualfah, 2021).Tetapi fitur TRIM pada SSD akan menandai file pada blok yang telah using (dihapus permanen) kemudian memberikan informasi tersebut kepada sistem operasi agar dapat memerintah file sistem di SSD untuk membersihkan file pada blok-blok yang telah usang, membuat file yang telah dihapus permanen menjadi sulit untuk direcovery .…”

Section: Pendahuluanunclassified

Teknik Disk Carving untuk Recovery Solid State Drive Volume ReFS dan NTFS dengan Fitur TRIM

Muhardinata,

Luthfi,

Ramadhani

2023

jiip

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Resilient File Sistem (ReFS) dan New Technology File System (NTFS) memiliki informasi metadata yang berbeda, sehingga membuat proses pemulihan data yang telah dihapus secara permanen menjadi sulit. Ini disebabkan oleh fakta bahwa alat analisis forensik yang umum digunakan bergantung pada tabel master file sistem yang tidak dapat dibaca pada volume ReFS. Perbedaan dalam metadata ini juga memengaruhi fitur TRIM pada Solid State Drive (SSD). Penelitian ini bertujuan untuk menguji pengaruh Teknik Disk Carving pada SSD dengan volume ReFS dan NTFS. Kami menggunakan metode Forensika Langsung yang mengikuti Standar Nasional Indonesia (SNI) 27037:2014. Metode ini dipilih karena memungkinkan kami untuk mengambil lebih banyak data dengan menggunakan alat seperti FTKImager. Kami mengumpulkan 34 sampel data dari volume ReFS dan 34 sampel data dari volume NTFS pada SSD dengan TRIM dinonaktifkan dan diaktifkan. Hasil penelitian menunjukkan bahwa data yang berhasil dipulihkan pada SSD dengan TRIM aktif adalah sekitar 9% pada volume NTFS, sementara pada volume ReFS data yang berhasil dipulihkan adalah 0%. Namun, pada SSD dengan TRIM dinonaktifkan semua data berhasil dipulihkan pada volume NTFS, sementara pada volume ReFS sekitar 74% data berhasil dipulihkan. Kesimpulannya setelah penelitian ini, data pada sistem file ReFS dengan TRIM dinonaktifkan dapat dibaca kembali melalui teknik disk carving. Sistem file juga memengaruhi SSD dengan fitur TRIM yang diaktifkan. Setelah pemulihan data pada volume ReFS dengan TRIM aktif, data akan muncul dalam bentuk folder tanpa nilai HASH, sementara pada volume NTFS dengan TRIM aktif, data tetap utuh tetapi sebagian besar memiliki nilai kunci HASH yang berbeda dari file aslinya.

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HIPA: A hybrid load balancing method in SSDs for improved parallelism performance

Sun

Chen

Zhang

et al. 2022

Journal of Systems Architecture

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Access Characteristic Guided Partition for Read Performance Improvement on Solid State Drives

Cited by 8 publications

References 14 publications

Parallelism-Aware Channel Partition for Read/Write Interference Mitigation in Solid-State Drives

Parallelism-Aware Channel Partition for Read/Write Interference Mitigation in Solid-State Drives

Teknik Disk Carving untuk Recovery Solid State Drive Volume ReFS dan NTFS dengan Fitur TRIM

HIPA: A hybrid load balancing method in SSDs for improved parallelism performance

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